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Scaling Reddit Community Points with Arbitrum Rollup: a piece of cake

Scaling Reddit Community Points with Arbitrum Rollup: a piece of cake
https://preview.redd.it/b80c05tnb9e51.jpg?width=2550&format=pjpg&auto=webp&s=850282c1a3962466ed44f73886dae1c8872d0f31
Submitted for consideration to The Great Reddit Scaling Bake-Off
Baked by the pastry chefs at Offchain Labs
Please send questions or comments to [[email protected] ](mailto:[email protected])
1. Overview
We're excited to submit Arbitrum Rollup for consideration to The Great Reddit Scaling Bake-Off. Arbitrum Rollup is the only Ethereum scaling solution that supports arbitrary smart contracts without compromising on Ethereum's security or adding points of centralization. For Reddit, this means that Arbitrum can not only scale the minting and transfer of Community Points, but it can foster a creative ecosystem built around Reddit Community Points enabling points to be used in a wide variety of third party applications. That's right -- you can have your cake and eat it too!
Arbitrum Rollup isn't just Ethereum-style. Its Layer 2 transactions are byte-for-byte identical to Ethereum, which means Ethereum users can continue to use their existing addresses and wallets, and Ethereum developers can continue to use their favorite toolchains and development environments out-of-the-box with Arbitrum. Coupling Arbitrum’s tooling-compatibility with its trustless asset interoperability, Reddit not only can scale but can onboard the entire Ethereum community at no cost by giving them the same experience they already know and love (well, certainly know).
To benchmark how Arbitrum can scale Reddit Community Points, we launched the Reddit contracts on an Arbitrum Rollup chain. Since Arbitrum provides full Solidity support, we didn't have to rewrite the Reddit contracts or try to mimic their functionality using an unfamiliar paradigm. Nope, none of that. We launched the Reddit contracts unmodified on Arbitrum Rollup complete with support for minting and distributing points. Like every Arbitrum Rollup chain, the chain included a bridge interface in which users can transfer Community Points or any other asset between the L1 and L2 chains. Arbitrum Rollup chains also support dynamic contract loading, which would allow third-party developers to launch custom ecosystem apps that integrate with Community Points on the very same chain that runs the Reddit contracts.
1.1 Why Ethereum
Perhaps the most exciting benefit of distributing Community Points using a blockchain is the ability to seamlessly port points to other applications and use them in a wide variety of contexts. Applications may include simple transfers such as a restaurant that allows Redditors to spend points on drinks. Or it may include complex smart contracts -- such as placing Community Points as a wager for a multiparty game or as collateral in a financial contract.
The common denominator between all of the fun uses of Reddit points is that it needs a thriving ecosystem of both users and developers, and the Ethereum blockchain is perhaps the only smart contract platform with significant adoption today. While many Layer 1 blockchains boast lower cost or higher throughput than the Ethereum blockchain, more often than not, these attributes mask the reality of little usage, weaker security, or both.
Perhaps another platform with significant usage will rise in the future. But today, Ethereum captures the mindshare of the blockchain community, and for Community Points to provide the most utility, the Ethereum blockchain is the natural choice.
1.2 Why Arbitrum
While Ethereum's ecosystem is unmatched, the reality is that fees are high and capacity is too low to support the scale of Reddit Community Points. Enter Arbitrum. Arbitrum Rollup provides all of the ecosystem benefits of Ethereum, but with orders of magnitude more capacity and at a fraction of the cost of native Ethereum smart contracts. And most of all, we don't change the experience from users. They continue to use the same wallets, addresses, languages, and tools.
Arbitrum Rollup is not the only solution that can scale payments, but it is the only developed solution that can scale both payments and arbitrary smart contracts trustlessly, which means that third party users can build highly scalable add-on apps that can be used without withdrawing money from the Rollup chain. If you believe that Reddit users will want to use their Community Points in smart contracts--and we believe they will--then it makes the most sense to choose a single scaling solution that can support the entire ecosystem, eliminating friction for users.
We view being able to run smart contracts in the same scaling solution as fundamentally critical since if there's significant demand in running smart contracts from Reddit's ecosystem, this would be a load on Ethereum and would itself require a scaling solution. Moreover, having different scaling solutions for the minting/distribution/spending of points and for third party apps would be burdensome for users as they'd have to constantly shuffle their Points back and forth.
2. Arbitrum at a glance
Arbitrum Rollup has a unique value proposition as it offers a combination of features that no other scaling solution achieves. Here we highlight its core attributes.
Decentralized. Arbitrum Rollup is as decentralized as Ethereum. Unlike some other Layer 2 scaling projects, Arbitrum Rollup doesn't have any centralized components or centralized operators who can censor users or delay transactions. Even in non-custodial systems, centralized components provide a risk as the operators are generally incentivized to increase their profit by extracting rent from users often in ways that severely degrade user experience. Even if centralized operators are altruistic, centralized components are subject to hacking, coercion, and potential liability.
Massive Scaling. Arbitrum achieves order of magnitude scaling over Ethereum's L1 smart contracts. Our software currently supports 453 transactions-per-second for basic transactions (at 1616 Ethereum gas per tx). We have a lot of room left to optimize (e.g. aggregating signatures), and over the next several months capacity will increase significantly. As described in detail below, Arbitrum can easily support and surpass Reddit's anticipated initial load, and its capacity will continue to improve as Reddit's capacity needs grow.
Low cost. The cost of running Arbitrum Rollup is quite low compared to L1 Ethereum and other scaling solutions such as those based on zero-knowledge proofs. Layer 2 fees are low, fixed, and predictable and should not be overly burdensome for Reddit to cover. Nobody needs to use special equipment or high-end machines. Arbitrum requires validators, which is a permissionless role that can be run on any reasonable on-line machine. Although anybody can act as a validator, in order to protect against a “tragedy of the commons” and make sure reputable validators are participating, we support a notion of “invited validators” that are compensated for their costs. In general, users pay (low) fees to cover the invited validators’ costs, but we imagine that Reddit may cover this cost for its users. See more on the costs and validator options below.
Ethereum Developer Experience. Not only does Arbitrum support EVM smart contracts, but the developer experience is identical to that of L1 Ethereum contracts and fully compatible with Ethereum tooling. Developers can port existing Solidity apps or write new ones using their favorite and familiar toolchains (e.g. Truffle, Buidler). There are no new languages or coding paradigms to learn.
Ethereum wallet compatibility. Just as in Ethereum, Arbitrum users need only hold keys, but do not have to store any coin history or additional data to protect or access their funds. Since Arbitrum transactions are semantically identical to Ethereum L1 transactions, existing Ethereum users can use their existing Ethereum keys with their existing wallet software such as Metamask.
Token interoperability. Users can easily transfer their ETH, ERC-20 and ERC-721 tokens between Ethereum and the Arbitrum Rollup chain. As we explain in detail below, it is possible to mint tokens in L2 that can subsequently be withdrawn and recognized by the L1 token contract.
Fast finality. Transactions complete with the same finality time as Ethereum L1 (and it's possible to get faster finality guarantees by trading away trust assumptions; see the Arbitrum Rollup whitepaper for details).
Non-custodial. Arbitrum Rollup is a non-custodial scaling solution, so users control their funds/points and neither Reddit nor anyone else can ever access or revoke points held by users.
Censorship Resistant. Since it's completely decentralized, and the Arbitrum protocol guarantees progress trustlessly, Arbitrum Rollup is just as censorship-proof as Ethereum.
Block explorer. The Arbitrum Rollup block explorer allows users to view and analyze transactions on the Rollup chain.
Limitations
Although this is a bake-off, we're not going to sugar coat anything. Arbitrum Rollup, like any Optimistic Rollup protocol, does have one limitation, and that's the delay on withdrawals.
As for the concrete length of the delay, we've done a good deal of internal modeling and have blogged about this as well. Our current modeling suggests a 3-hour delay is sufficient (but as discussed in the linked post there is a tradeoff space between the length of the challenge period and the size of the validators’ deposit).
Note that this doesn't mean that the chain is delayed for three hours. Arbitrum Rollup supports pipelining of execution, which means that validators can keep building new states even while previous ones are “in the pipeline” for confirmation. As the challenge delays expire for each update, a new state will be confirmed (read more about this here).
So activity and progress on the chain are not delayed by the challenge period. The only thing that's delayed is the consummation of withdrawals. Recall though that any single honest validator knows immediately (at the speed of L1 finality) which state updates are correct and can guarantee that they will eventually be confirmed, so once a valid withdrawal has been requested on-chain, every honest party knows that the withdrawal will definitely happen. There's a natural place here for a liquidity market in which a validator (or someone who trusts a validator) can provide withdrawal loans for a small interest fee. This is a no-risk business for them as they know which withdrawals will be confirmed (and can force their confirmation trustlessly no matter what anyone else does) but are just waiting for on-chain finality.
3. The recipe: How Arbitrum Rollup works
For a description of the technical components of Arbitrum Rollup and how they interact to create a highly scalable protocol with a developer experience that is identical to Ethereum, please refer to the following documents:
Arbitrum Rollup Whitepaper
Arbitrum academic paper (describes a previous version of Arbitrum)
4. Developer docs and APIs
For full details about how to set up and interact with an Arbitrum Rollup chain or validator, please refer to our developer docs, which can be found at https://developer.offchainlabs.com/.
Note that the Arbitrum version described on that site is older and will soon be replaced by the version we are entering in Reddit Bake-Off, which is still undergoing internal testing before public release.
5. Who are the validators?
As with any Layer 2 protocol, advancing the protocol correctly requires at least one validator (sometimes called block producers) that is honest and available. A natural question is: who are the validators?
Recall that the validator set for an Arbitrum chain is open and permissionless; anyone can start or stop validating at will. (A useful analogy is to full nodes on an L1 chain.) But we understand that even though anyone can participate, Reddit may want to guarantee that highly reputable nodes are validating their chain. Reddit may choose to validate the chain themselves and/or hire third-party validators.To this end, we have begun building a marketplace for validator-for-hire services so that dapp developers can outsource validation services to reputable nodes with high up-time. We've announced a partnership in which Chainlink nodes will provide Arbitrum validation services, and we expect to announce more partnerships shortly with other blockchain infrastructure providers.
Although there is no requirement that validators are paid, Arbitrum’s economic model tracks validators’ costs (e.g. amount of computation and storage) and can charge small fees on user transactions, using a gas-type system, to cover those costs. Alternatively, a single party such as Reddit can agree to cover the costs of invited validators.
6. Reddit Contract Support
Since Arbitrum contracts and transactions are byte-for-byte compatible with Ethereum, supporting the Reddit contracts is as simple as launching them on an Arbitrum chain.
Minting. Arbitrum Rollup supports hybrid L1/L2 tokens which can be minted in L2 and then withdrawn onto the L1. An L1 contract at address A can make a special call to the EthBridge which deploys a "buddy contract" to the same address A on an Arbitrum chain. Since it's deployed at the same address, users can know that the L2 contract is the authorized "buddy" of the L1 contract on the Arbitrum chain.
For minting, the L1 contract is a standard ERC-20 contract which mints and burns tokens when requested by the L2 contract. It is paired with an ERC-20 contract in L2 which mints tokens based on whatever programmer provided minting facility is desired and burns tokens when they are withdrawn from the rollup chain. Given this base infrastructure, Arbitrum can support any smart contract based method for minting tokens in L2, and indeed we directly support Reddit's signature/claim based minting in L2.
Batch minting. What's better than a mint cookie? A whole batch! In addition to supporting Reddit’s current minting/claiming scheme, we built a second minting design, which we believe outperforms the signature/claim system in many scenarios.
In the current system, Reddit periodically issues signed statements to users, who then take those statements to the blockchain to claim their tokens. An alternative approach would have Reddit directly submit the list of users/amounts to the blockchain and distribute the tokens to the users without the signature/claim process.
To optimize the cost efficiency of this approach, we designed an application-specific compression scheme to minimize the size of the batch distribution list. We analyzed the data from Reddit's previous distributions and found that the data is highly compressible since token amounts are small and repeated, and addresses appear multiple times. Our function groups transactions by size, and replaces previously-seen addresses with a shorter index value. We wrote client code to compress the data, wrote a Solidity decompressing function, and integrated that function into Reddit’s contract running on Arbitrum.
When we ran the compression function on the previous Reddit distribution data, we found that we could compress batched minting data down to to 11.8 bytes per minting event (averaged over a 6-month trace of Reddit’s historical token grants)compared with roughly 174 bytes of on-chain data needed for the signature claim approach to minting (roughly 43 for an RLP-encoded null transaction + 65 for Reddit's signature + 65 for the user's signature + roughly 8 for the number of Points) .
The relative benefit of the two approaches with respect to on-chain call data cost depends on the percentage of users that will actually claim their tokens on chain. With the above figures, batch minting will be cheaper if roughly 5% of users redeem their claims. We stress that our compression scheme is not Arbitrum-specific and would be beneficial in any general-purpose smart contract platform.
8. Benchmarks and costs
In this section, we give the full costs of operating the Reddit contracts on an Arbitrum Rollup chain including the L1 gas costs for the Rollup chain, the costs of computation and storage for the L2 validators as well as the capital lockup requirements for staking.
Arbitrum Rollup is still on testnet, so we did not run mainnet benchmarks. Instead, we measured the L1 gas cost and L2 workload for Reddit operations on Arbitrum and calculated the total cost assuming current Ethereum gas prices. As noted below in detail, our measurements do not assume that Arbitrum is consuming the entire capacity of Ethereum. We will present the details of our model now, but for full transparency you can also play around with it yourself and adjust the parameters, by copying the spreadsheet found here.
Our cost model is based on measurements of Reddit’s contracts, running unmodified (except for the addition of a batch minting function) on Arbitrum Rollup on top of Ethereum.
On the distribution of transactions and frequency of assertions. Reddit's instructions specify the following minimum parameters that submissions should support:
Over a 5 day period, your scaling PoC should be able to handle:
  • 100,000 point claims (minting & distributing points)
  • 25,000 subscriptions
  • 75,000 one-off points burning
  • 100,000 transfers
We provide the full costs of operating an Arbitrum Rollup chain with this usage under the assumption that tokens are minted or granted to users in batches, but other transactions are uniformly distributed over the 5 day period. Unlike some other submissions, we do not make unrealistic assumptions that all operations can be submitted in enormous batches. We assume that batch minting is done in batches that use only a few percent on an L1 block’s gas, and that other operations come in evenly over time and are submitted in batches, with one batch every five minutes to keep latency reasonable. (Users are probably already waiting for L1 finality, which takes at least that long to achieve.)
We note that assuming that there are only 300,000 transactions that arrive uniformly over the 5 day period will make our benchmark numbers lower, but we believe that this will reflect the true cost of running the system. To see why, say that batches are submitted every five minutes (20 L1 blocks) and there's a fixed overhead of c bytes of calldata per batch, the cost of which will get amortized over all transactions executed in that batch. Assume that each individual transaction adds a marginal cost of t. Lastly assume the capacity of the scaling system is high enough that it can support all of Reddit's 300,000 transactions within a single 20-block batch (i.e. that there is more than c + 300,000*t byes of calldata available in 20 blocks).
Consider what happens if c, the per-batch overhead, is large (which it is in some systems, but not in Arbitrum). In the scenario that transactions actually arrive at the system's capacity and each batch is full, then c gets amortized over 300,000 transactions. But if we assume that the system is not running at capacity--and only receives 300,000 transactions arriving uniformly over 5 days-- then each 20-block assertion will contain about 200 transactions, and thus each transaction will pay a nontrivial cost due to c.
We are aware that other proposals presented scaling numbers assuming that 300,000 transactions arrived at maximum capacity and was executed in a single mega-transaction, but according to our estimates, for at least one such report, this led to a reported gas price that was 2-3 orders of magnitude lower than it would have been assuming uniform arrival. We make more realistic batching assumptions, and we believe Arbitrum compares well when batch sizes are realistic.
Our model. Our cost model includes several sources of cost:
  • L1 gas costs: This is the cost of posting transactions as calldata on the L1 chain, as well as the overhead associated with each batch of transactions, and the L1 cost of settling transactions in the Arbitrum protocol.
  • Validator’s staking costs: In normal operation, one validator will need to be staked. The stake is assumed to be 0.2% of the total value of the chain (which is assumed to be $1 per user who is eligible to claim points). The cost of staking is the interest that could be earned on the money if it were not staked.
  • Validator computation and storage: Every validator must do computation to track the chain’s processing of transactions, and must maintain storage to keep track of the contracts’ EVM storage. The cost of computation and storage are estimated based on measurements, with the dollar cost of resources based on Amazon Web Services pricing.
It’s clear from our modeling that the predominant cost is for L1 calldata. This will probably be true for any plausible rollup-based system.
Our model also shows that Arbitrum can scale to workloads much larger than Reddit’s nominal workload, without exhausting L1 or L2 resources. The scaling bottleneck will ultimately be calldata on the L1 chain. We believe that cost could be reduced substantially if necessary by clever encoding of data. (In our design any compression / decompression of L2 transaction calldata would be done by client software and L2 programs, never by an L1 contract.)
9. Status of Arbitrum Rollup
Arbitrum Rollup is live on Ethereum testnet. All of the code written to date including everything included in the Reddit demo is open source and permissively licensed under the Apache V2 license. The first testnet version of Arbitrum Rollup was released on testnet in February. Our current internal version, which we used to benchmark the Reddit contracts, will be released soon and will be a major upgrade.
Both the Arbitrum design as well as the implementation are heavily audited by independent third parties. The Arbitrum academic paper was published at USENIX Security, a top-tier peer-reviewed academic venue. For the Arbitrum software, we have engaged Trail of Bits for a security audit, which is currently ongoing, and we are committed to have a clean report before launching on Ethereum mainnet.
10. Reddit Universe Arbitrum Rollup Chain
The benchmarks described in this document were all measured using the latest internal build of our software. When we release the new software upgrade publicly we will launch a Reddit Universe Arbitrum Rollup chain as a public demo, which will contain the Reddit contracts as well as a Uniswap instance and a Connext Hub, demonstrating how Community Points can be integrated into third party apps. We will also allow members of the public to dynamically launch ecosystem contracts. We at Offchain Labs will cover the validating costs for the Reddit Universe public demo.
If the folks at Reddit would like to evaluate our software prior to our public demo, please email us at [email protected] and we'd be more than happy to provide early access.
11. Even more scaling: Arbitrum Sidechains
Rollups are an excellent approach to scaling, and we are excited about Arbitrum Rollup which far surpasses Reddit's scaling needs. But looking forward to Reddit's eventual goal of supporting hundreds of millions of users, there will likely come a time when Reddit needs more scaling than any Rollup protocol can provide.
While Rollups greatly reduce costs, they don't break the linear barrier. That is, all transactions have an on-chain footprint (because all calldata must be posted on-chain), albeit a far smaller one than on native Ethereum, and the L1 limitations end up being the bottleneck for capacity and cost. Since Ethereum has limited capacity, this linear use of on-chain resources means that costs will eventually increase superlinearly with traffic.
The good news is that we at Offchain Labs have a solution in our roadmap that can satisfy this extreme-scaling setting as well: Arbitrum AnyTrust Sidechains. Arbitrum Sidechains are similar to Arbitrum Rollup, but deviate in that they name a permissioned set of validators. When a chain’s validators agree off-chain, they can greatly reduce the on-chain footprint of the protocol and require almost no data to be put on-chain. When validators can't reach unanimous agreement off-chain, the protocol reverts to Arbitrum Rollup. Technically, Arbitrum Sidechains can be viewed as a hybrid between state channels and Rollup, switching back and forth as necessary, and combining the performance and cost that state channels can achieve in the optimistic case, with the robustness of Rollup in other cases. The core technical challenge is how to switch seamlessly between modes and how to guarantee that security is maintained throughout.
Arbitrum Sidechains break through this linear barrier, while still maintaining a high level of security and decentralization. Arbitrum Sidechains provide the AnyTrust guarantee, which says that as long as any one validator is honest and available (even if you don't know which one will be), the L2 chain is guaranteed to execute correctly according to its code and guaranteed to make progress. Unlike in a state channel, offchain progress does not require unanimous consent, and liveness is preserved as long as there is a single honest validator.
Note that the trust model for Arbitrum Sidechains is much stronger than for typical BFT-style chains which introduce a consensus "voting" protocols among a small permissioned group of validators. BFT-based protocols require a supermajority (more than 2/3) of validators to agree. In Arbitrum Sidechains, by contrast, all you need is a single honest validator to achieve guaranteed correctness and progress. Notice that in Arbitrum adding validators strictly increases security since the AnyTrust guarantee provides correctness as long as any one validator is honest and available. By contrast, in BFT-style protocols, adding nodes can be dangerous as a coalition of dishonest nodes can break the protocol.
Like Arbitrum Rollup, the developer and user experiences for Arbitrum Sidechains will be identical to that of Ethereum. Reddit would be able to choose a large and diverse set of validators, and all that they would need to guarantee to break through the scaling barrier is that a single one of them will remain honest.
We hope to have Arbitrum Sidechains in production in early 2021, and thus when Reddit reaches the scale that surpasses the capacity of Rollups, Arbitrum Sidechains will be waiting and ready to help.
While the idea to switch between channels and Rollup to get the best of both worlds is conceptually simple, getting the details right and making sure that the switch does not introduce any attack vectors is highly non-trivial and has been the subject of years of our research (indeed, we were working on this design for years before the term Rollup was even coined).
12. How Arbitrum compares
We include a comparison to several other categories as well as specific projects when appropriate. and explain why we believe that Arbitrum is best suited for Reddit's purposes. We focus our attention on other Ethereum projects.
Payment only Rollups. Compared to Arbitrum Rollup, ZK-Rollups and other Rollups that only support token transfers have several disadvantages:
  • As outlined throughout the proposal, we believe that the entire draw of Ethereum is in its rich smart contracts support which is simply not achievable with today's zero-knowledge proof technology. Indeed, scaling with a ZK-Rollup will add friction to the deployment of smart contracts that interact with Community Points as users will have to withdraw their coins from the ZK-Rollup and transfer them to a smart contract system (like Arbitrum). The community will be best served if Reddit builds on a platform that has built-in, frictionless smart-contract support.
  • All other Rollup protocols of which we are aware employ a centralized operator. While it's true that users retain custody of their coins, the centralized operator can often profit from censoring, reordering, or delaying transactions. A common misconception is that since they're non-custodial protocols, a centralized sequencer does not pose a risk but this is incorrect as the sequencer can wreak havoc or shake down users for side payments without directly stealing funds.
  • Sidechain type protocols can eliminate some of these issues, but they are not trustless. Instead, they require trust in some quorum of a committee, often requiring two-third of the committee to be honest, compared to rollup protocols like Arbitrum that require only a single honest party. In addition, not all sidechain type protocols have committees that are diverse, or even non-centralized, in practice.
  • Plasma-style protocols have a centralized operator and do not support general smart contracts.
13. Concluding Remarks
While it's ultimately up to the judges’ palate, we believe that Arbitrum Rollup is the bakeoff choice that Reddit kneads. We far surpass Reddit's specified workload requirement at present, have much room to optimize Arbitrum Rollup in the near term, and have a clear path to get Reddit to hundreds of millions of users. Furthermore, we are the only project that gives developers and users the identical interface as the Ethereum blockchain and is fully interoperable and tooling-compatible, and we do this all without any new trust assumptions or centralized components.
But no matter how the cookie crumbles, we're glad to have participated in this bake-off and we thank you for your consideration.
About Offchain Labs
Offchain Labs, Inc. is a venture-funded New York company that spun out of Princeton University research, and is building the Arbitrum platform to usher in the next generation of scalable, interoperable, and compatible smart contracts. Offchain Labs is backed by Pantera Capital, Compound VC, Coinbase Ventures, and others.
Leadership Team
Ed Felten
Ed Felten is Co-founder and Chief Scientist at Offchain Labs. He is on leave from Princeton University, where he is the Robert E. Kahn Professor of Computer Science and Public Affairs. From 2015 to 2017 he served at the White House as Deputy United States Chief Technology Officer and senior advisor to the President. He is an ACM Fellow and member of the National Academy of Engineering. Outside of work, he is an avid runner, cook, and L.A. Dodgers fan.
Steven Goldfeder
Steven Goldfeder is Co-founder and Chief Executive Officer at Offchain Labs. He holds a PhD from Princeton University, where he worked at the intersection of cryptography and cryptocurrencies including threshold cryptography, zero-knowledge proof systems, and post-quantum signatures. He is a co-author of Bitcoin and Cryptocurrency Technologies, the leading textbook on cryptocurrencies, and he has previously worked at Google and Microsoft Research, where he co-invented the Picnic signature algorithm. When not working, you can find Steven spending time with his family, taking a nature walk, or twisting balloons.
Harry Kalodner
Harry Kalodner is Co-founder and Chief Technology Officer at Offchain Labs where he leads the engineering team. Before the company he attended Princeton as a Ph.D candidate where his research explored economics, anonymity, and incentive compatibility of cryptocurrencies, and he also has worked at Apple. When not up at 3:00am writing code, Harry occasionally sleeps.
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Why did I build AmputatorBot?

Why did I build AmputatorBot?
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Why AMP is a threat to the Open Web

What is AMP?
AMP is an open-source web component framework developed by the AMP Open Source Project, first announced by Google in 2015 as a reaction to Facebook’s Instant Articles and Apple News. While it was originally aimed at accelerating mobile pages (hence AMP), it’s now a much broader project aimed at improving the UX of websites, stories, ads and mail. The AMP framework consists of three components: AMP HTML, which is standard HTML markup with web components; AMP JavaScript, which manages resource loading; and AMP caches, which serves and validates AMP pages.
In plain English: AMP is Google’s attempt at making pages (and more) faster. They did a good job, pages built with the AMP framework will normally load faster. However, as this article explains, you won’t notice much of a difference unless the AMP library is served using the AMP cache, but more on that later.
The controversies with cached AMP pages
The AMP format is itself not much of a problem. In fact, we should applaud search engines that give ranking preference to fast-loading pages like AMP, but four aspects of its implementation are flawed:
  1. Google mobile Search’s Top Stories carousel has a premium position above of all other results, which is only accessible for AMP pages. These pages have to use a technology that was build and maintained mostly by Google (of the top 10 contributors to the AMP project on GitHub, 9 are Google employees), are then served by Google from their infrastructure and placed within a Google controlled user experience. And since this carousel generates a lot of clicks and revenue, publishers are left no choice but to embrace AMP. This has the effect of further reinforcing Google’s dominance of the Web. Fortunately, Google has announced that it's working on opening up the Top Stories carousel to non-AMP pages in 2021.
  2. The biggest performance boost doesn’t come from the AMP framework, but from preloading the page. It begs the question: Should preloading really be exclusive to AMP? They could introduce a way for publishers to allow or disallow preloading and if Google sees fit, they could preload those pages too, alongside AMP.
  3. When a user navigates from Google to a piece of content Google has recommended (or when a user clicks on a shared cached AMP link), they are, unwittingly, remaining within Google’s ecosystem and the publisher’s domain is obscured by the google.com/amp prefix. To work around this Google introduced Signed HTTP Exchanges ([Draft], [1], [2]), a web-standard that allows the browser to display the original site's URL, instead of the actual one (the one with the google.com/prefix). This would solve the original issue, but while doing so it introduced new ones (e.g. it obfuscates the fact that they're delivering the AMP page you're visiting). Interestingly enough, Google's Chrome already has support for this technology, but parties not involved with AMP are not so enthusiastic: Mozilla has deemed it a harmful web standard [2], and Apple has taken a similar stance.
  4. Google’s entire business model is about collecting as much personal data as possible, AMP is just another tool to do so. As described in Google’s Support article:
“When you use the Google AMP Viewer, Google and the publisher that made the AMP page may each collect data about you.”
The controversies with non-cached AMP pages
To be clear, the above flaws are only with AMP pages cached by Google (or another party like Bing or Cloudflare) but there are also plenty of pages simply utilizing the AMP framework, recognized by URLs such as bbc.com/news/amp/. However, these are also problematic, mainly because there's only a small performance improvement when AMP pages aren't cached and AMP pages tend to be less feature-rich and less diverse than their originals. And in some edge cases, it breaks stuff.
One could argue that the more popular the AMP framework becomes, the more AMP threatens the open web. That said, it should be clear that the biggest problem lies with the cached AMP pages.
AMP is open source, but that doesn't make it holy. Or as Ferdy Christant puts it quite nicely in his blog:
Google’s main defense is that AMP is open source. Which isn’t just a weak defense, it’s no defense at all. I can open source a plan for genocide. The term “open source” is meaningless if the thing that is open source is harmful.
Just so we’re clear, I’m not claiming Google or the AMP project is evil (hell, they might even have good intentions!), but the fact is that AMP and it's implementation have some major flaws that threaten the Open Web. And as long as that's the case, AmputatorBot will be there to remove AMP from your URLs.
AmputatorBot scans for AMP pages on Reddit and replies with the canonical version
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Blockchain in the Public Sector – Webcast Q&A

Blockchain in the Public Sector – Webcast Q&A
Link to our website: https://block.co/blockchain-in-the-public-sector-webcast-qa/
Block.co fourth webcast titled "Digital Transformation of the Public Sector & The Upcoming Legislation of Blockchain Technology in Cyprus” was an immense success. We gathered some of the best experts in the field, Deputy Minister Kyriacos Kokkinos, Jeff Bandman, Steve Tendon, and Christiana Aristidou to share their experience and discuss with us the latest updates regarding Blockchain in the Public Sector.
In its fourth series of webcasts, Block.co gathered 281 people watching the event from 41 different countries, for a two-hour webcast where guests answered participants’ questions. Following the impressive outcome and response we received from the audience, Block.co’s team has done its best to address all the questions for which public information is available.
Below is a list of the questions that were made and were not answered due to time constraints during the webcast. For the remaining questions from our audience, the team will reach out to our distinguished guests to receive their comments and feedback. Please note, that the below information is only for informational purposes!
Question 1:
How can asset tracing be accomplished with bitcoins and cryptocurrency? And how can this be regulated?
Block.co Team Answer:
Digital Asset tracing may be accomplished with cryptocurrency intelligence solutions such as Cipher Trace and the ICE cryptocurrency intelligence program. FATF (Financial Action Task Force) embarked on a program of work from summer 2018 to June 2019 to strengthen and update the provisions dealing with virtual assets and virtual asset service providers. FATF updated Recommendations in October 2018 and Guidance in June 2019 include several new obligations that apply to VASPs. The so-called “Travel Rule” FATF announced in October 2019 agreed on the assessment criteria for how it will assess countries’ compliance with the new global standards. Under the Travel Rule, the transmitter’s financial institutions must include and send information in the transmittal order such as Information about the identity, name, address, and account number of the sender and its financial institution Information about the identity, name, address and account number of the recipient. The ”Travel Rule” is effectively being applied to cryptoasset transfers when there is a virtual asset service provider (VASP) involved. The scope of focus has broadened from “convertible” virtual assets to any virtual asset. Countries should make sure businesses can freeze crypto wallet or exchange accounts for sanctioned individuals.
Question 2:
Which kind of software or technical knowledge is required to develop cryptocurrency?
Block.co Team Answer:
It depends on the type of cryptocurrency you wish to create, as well as the preferred functionality and features, and characteristics of the token or coin (i.e. will it be pre-mined, what type of hashing or cryptographic algorithm will be used (i.e. proof of work (POW) or proof of stake (POS) or a hybrid of both), etc. Likewise, it is useful to utilize a programming language that is broadly used and supported by a vast and active development community; more data could be found here: more information could be found here: top programming languages in 2015/2016, published by IEEE here, and TIOBE. Hypothetically, you can utilize any programming language to make cryptocurrency digital money, however, the most widely recognized are C, C++, Java, Python, Perl. The beauty of cryptocurrencies is that you can literally have access to the entire Bitcoin and Ethereum open-source programming scripts, and create your alternate coin (altcoin).
Question 3:
Hello all, I want to know about the current status of the European Union Blockchain initiative in currency or public identity.
Block.co Team Answer:
Please refer to the European Services Blockchain Infrastructure (EBSI) website.
Question 4:
Mining is also the process of confirmation of transactions in the Bitcoin Blockchain. What is the process of confirmation of transactions in the Blockchain of an Organization? How do we call it?
Block.co Team Answer:
That would depend on the specific consensus algorithm used for the confirmation of transactions. The consensus algorithm is part of the blockchain protocol that defines the rules on how consensus is reached on that blockchain. In order to participate, entities on the blockchain must obey and follow the same consensus algorithm. Make sure to check our glossary for more information.
Question 5:
How does a small business implement blockchain into its current non-blockchain software systems? Who do they hire to install it?
Block.co Team Answer:
It is easy when there are APIs to connect the various software. For more information, you can check Block.co API.
Question 6:
What is your opinion on digitizing developing economies like India by using AI and blockchain?
Block.co Team Answer:
Watch a very interesting webinar on the matter by Mr. Prasanna:
Question 7:
Blockchain technologies have been around since 2008. What would you say has been the biggest obstacle in widespread adoption?
Block.co Team Answer:
In our opinion, the biggest obstacles are volatile cryptoasset prices, complicated UIs, undefined blockchain technology standards. Moreover, the legislation around the technologies is still now being developed and does not offer legal certainty for broader adoption.
Question 8:
Limitations to Blockchain Usability in the Public Sector?
Block.co Team Answer:
Blockchain in the Public Sector, like any other innovative concept with big potential, cannot be a solution to every problem. Users and developers are still figuring out technological and managerial challenges. From a technological perspective, some aspects such as platform scalability, validation methods, data standardization, and systems integration must still be addressed. From a managerial point of view, the questions include business model transformation, incentive structure, and transaction scale, and maturity. Read more here.
Question 9:
How can these blockchain initiatives be practical for the African context
Block.co Team Answer:
As long as the internet infrastructure is in place, these blockchain initiatives may have the same benefits for the African region.
Question 10:
What are some compelling use cases you’ve seen lately, and how do they serve to further legitimize blockchain as a solution?
Block.co Team Answer:
You can see the global trends from all around the world when it comes to further legitimization as a solution, with China leading the way. Read more here.
Question 11:
How does digital currency manage the issue of money laundering?
Block.co Team Answer:
Depends under which context you are looking at the term digital currency. A digital currency usually refers to a balance or a record stored in a distributed database, in an electronic computer database, within digital files or a stored-value card. Some examples of digital currencies are cryptocurrencies, virtual currencies, central bank digital currencies (CBDCs), and e-Cash. The Financial Action Task Force (FATF) is an intergovernmental body established in 1989 on the initiative of the G7 to develop policies to fight money laundering. Since 2001 FATF is also looking into terrorism financing. The objectives of FATF are to set standards and promote effective implementation of legal, regulatory and operational measures for combating money laundering, terrorist financing, and other related threats to the integrity of the international financial system. FATF is a “policy-making body” that works to generate the necessary political will to bring about national legislative and regulatory reforms in these areas. FATF monitors progress in implementing its Recommendations through “peer reviews” (“mutual evaluations”) of member countries. It is the global watchdog for anti-money laundering & counter-terrorist finance. In June 2019, it updated its guidance paper for Virtual Assets Service Providers (VASPs) regarding the transfer of digital assets. There was an insertion of a new interpretive note that sets out the application of the FATF Standards to virtual asset activities and service providers. To apply FATF Recommendations, countries should consider virtual assets as “property,” “proceeds,” “funds,” “funds or other assets,” or other “corresponding value.” Countries should apply the relevant measures under the FATF Recommendations to virtual assets and virtual asset service providers (VASPs). Read more about the FATF recommendations here).

https://preview.redd.it/58tt7mt1pld51.png?width=1920&format=png&auto=webp&s=d24811c4864ebf02cb9aacc8d6b877a1fbc3756b
Question 12:
To what extent can blockchain be used to improve the privacy of healthcare?
Block.co team Answer:
Please refer to our previous webcast, blog, and articles for more information.
Question 13:
What is Blockchain technology in Shipping?
Block.co team Answer:
The shipping sector has been in the hold of phony maritime institutes charging exorbitant fees via agents, issuing certificates to candidates who do not have the imperative attendance, or those candidates who just pay the fees for the course and ask for the certificate. In view of these fake accreditations, the possibility exists that someone could be harmed or killed, and we could face any number of potential ecological disasters. Having the option to easily verify the genuine origin of a certificate by an approved maritime center is foremost for shipping companies to fast-track their operation and streamline their labor.
Question 14:
Different uses of blockchain other than cryptocurrency?
Block.co team Answer:
Please refer to our blog and glossary.
Question 15:
Upcoming trends in Blockchain concerning Advertising, Marketing, and Public Relations in the Public and Private sectors.
Block.co Team Answer:
Regarding the application of blockchain technology to media copyrights, please see Block.co use case proposal during the Bloomen Ideathon.

https://preview.redd.it/48zc8j38pld51.png?width=3622&format=png&auto=webp&s=79987d1dc7eb8d0c8e32dbce8680b17801d0d244
Question 16:
How to create a decentralized blockchain?
Block.co Team Answer:
An excessive number of individuals feel that blockchain is some supernatural innovation that makes up a decentralized system. In truth, this innovation only enables decentralization. Which means, it permits cryptocurrency to work in a decentralized way. Yet, it doesn’t give any guarantees that it will work that way. Along these lines, it’s really, some outer variables that decide genuine decentralization. Technology, itself never really guarantees it. That is the reason it’s a mistake to expect that if it’s a blockchain — it’s decentralized. From a technical perspective, both blockchains, centralized, and decentralized are comparative, as they take work on distributed peer to peer to network. This implies every node is individually responsible to verify and store the shared ledger. Both Blockchains utilize either a proof-of-work or proof-of-stake mechanisms to make a solitary record and they have to give upper and lower limits on the security and productivity of the system. For more information please refer to our infographic.
Question 17:
Dubai government Blockchain implementation progress?
Block.co Team Answer:
You can see more information here.
Question 18:
How Blockchain and IoT can be integrated to secure data being transmitted through IoT devices.
Block.co Team Answer:
You can read more about it here.
Question 19:
How can the Nigerian government use Blockchain to effectively implement its existing launched eGovernment master plan?
Block.co Team Answer:
Perhaps it can draw its attention to the initiatives of Dubai, Estonia, and Malta to prepare an implementation framework.
Question 20:
What impact is blockchain going to have in today world of business especially in the financial sector
Block.co Team Answer:
Please refer to our recent article titled Benefits of Blockchain Technology in the Banking Industry.
Question 21:
Is Blockchain Technology affect individuals?
Block.co Team Answer:
The social effect of blockchain innovation has just started to be acknowledged and this may simply be a hint of something larger. Cryptocurrencies have raised questions over financial services through digital wallets, and while considering that there are in excess of 3,5 billion individuals on the planet today without access to banking, such a move is surely impactful. Maybe the move for cryptocurrencies will be simpler for developing nations than the process of fiat cash and credit cards. It is like the transformation that developing nations had with mobile phones. It was simpler to acquire mass amounts of mobile phones than to supply another infrastructure for landlines telephones. In addition to giving the underprivileged access to banking services, greater transparency could also raise the profile and effectiveness of charities working in developing countries that fall under corrupt or manipulative governments.
An expanded degree of trust in where the cash goes and whose advantages would without a doubt lead to expanded commitments and backing for the poor in parts of the world that are in urgent need of help. Blockchain technology is well placed to remove the possibility of vote-apparatus and the entirety of different negatives related to the current democratic procedure. Obviously, with new innovation, there are new obstacles and issues that will arise, yet the cycle goes on and those new issues will be comprehended with progressively modern arrangements. A decentralized record would give the entirety of the fundamental information to precisely record votes on an anonymous basis, and check the exactness and whether there had been any manipulation of the voting procedure.
Question 22:
As Andreas Antonopoulos often says in his MOOC: ”is a blockchain even needed?” Ie. Are there better methods?
Block.co Team Answer:
In combination with nascent technologies, IoT, distributed computing, and distributed ledger technologies, governments can provide inventive services and answers for the citizens and local municipalities. Blockchain can provide the component to create a safe framework to deal with these functions. In particular, it can provide a safe interoperable infrastructure that permits all smart city services and capacities to work past presently imagined levels. On the off chance that there were better techniques, they would be researched.
Question 23:
Would any of this be also applicable to the educational sector (as part of the general public sector), and if so in which way?
Block.co Team Answer:
Yes, please refer to our Webcast on Education and our blog post.
Question 24:
Will we be able to get a hold of this recording upon completion of the meeting?
Block.co Team Answer:
Yes, here is a link to the recording of our webcast Blockchain in the Public Sector.
Question 25:
Was wondering if there are any existing universal framework in governing the blockchain technology?
Block.co Team Answer:
The short answer is NO, as this framework is currently being prepared in collaboration with the various Member States.
We would like to thank everyone for attending our webcast and hoping to interact with you in future webinars. If you would like to watch the webinar again, then click here!
For more info, contact Block.co directly or email at [[email protected]](mailto:[email protected]).
Tel +357 70007828
Get the latest from Block.co, like and follow us on social media:
✔️Facebook
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submitted by BlockDotCo to u/BlockDotCo [link] [comments]

Craig's latest proof of Satoshiness proves nothing, as usual.

[I finally got banned from /bitcoincashsv and several of my comments were deleted, and I'll have you know I spent entire minutes on those, so here's the gist of one of them in post form instead]

The latest incontrovertible "proof" that Craig is Satoshi is a paper supposedly written in 2007.

That paper, or more accurately the version of that paper that was uploaded to SSRN.com contains two sentences that are clearly derived from the bitcoin whitepaper. How is that possible, you ask? Two possible explanations here. One is what Craig is trying to sell, and the other is what most likely happened.
A week ago, twitter user @BSV_MetaNet (since renamed to @Salty_Truth_) posted a few screenshots from Craig's Den, aka the Metanet ICU Slack: https://twitter.com/Salty_Truth_/status/1160928258852040704
Those screenshots feature Craig claiming that he wrote a paper in May 2008 on "distributed intermediaries" that have a "90% overlap in a section to the white paper" He then added "They are hard to find now" and "I published as a law student, so, not as easy to find as some."
Thus started the treasure hunt to find Craig's precious student paper that would finally prove he his Satoshi.
This isn't a new pattern for Craig. Wired noted back in 2015, after they were briefly bamboozled by Craig's narrative:
Wright seemed to planting breadcrumbs that would lead us to his theoretical secret identity. In fact, we'd already spotted that the three posts in Wright's now-deleted blog that seemed to reveal his bitcoin work had been backdated or edited after the fact to insert that evidence.
But Craig is learning, however slowly. His previous attempts were repeatedly foiled because anyone could find the previous version of his blog posts and see he had tampered with them. It's however much harder to track down some random student paper's original version.

And so the faithful went to work to try to please their Satoshi by finding His holy breadcrumbs.

Soon, they found a first paper that seemed to satisfy Craig's oblique reference, "The Impact of Internet Intermediary Liability". It didn't have any overlap with the Bitcoin whitepaper and used "P2P payments" to describe Paypal, but that didn't stop the faithful from claiming this was incontrovertible proof. The paper itself was uploaded by Craig to SSRN in 2017, long after Craig had decided to become Satoshi and 2 years after Wired called him out, and as such its integrity was suspect, but there wasn't really much to write about in there.
That changed today. A new SSRN paper was posted, titled "Payments Providers And Intermediaries As Defined In The Law Of The Internet.". Specifically, this morning, a word document was converted to a PDF, uploaded to SSRN then triumphantly posted to reddit all within 30 minutes. You can download the PDF yourself and check its metadata to verify this for yourself.
That paper ostensibly predates the whitepaper, yet contains two sentences mentioned that are too similar to sentences found in the whitepaper to be accidental. The narrative the faithful are expected to believe is that Satoshi decided to contrive two sentences from one of Craig's old unrelated student paper into his whitepaper, thereby proving Craig is Satoshi.
Except of course it would have been trivial for Craig to edit a word document to insert those two sentences before converting it to a PDF 9 hours ago and uploading it to SSRN, and given Craig's previous eerily similar behavior, it would frankly be amazing if he hadn't done so.
If it was somehow possible to find the original version of that student paper, it would plainly show Craig's latest deception, but if Craig has learned anything, I expect it will be hard to do.
submitted by itsnotlupus to bsv [link] [comments]

Bitcoin Gemini Exchange Review 2020

Bitcoin Gemini Exchange Review 2020
If you are planning to place assets into cryptographic types of cash like Bitcoin or Ether, in any case, you do not understand where to start, this Gemini exchange review will help you with choosing.
Gemini Bitcoin Exchange Review 2020
You need yourself to be a productive advanced cash intermediary. By what technique will you become? To help you here's an exchange review, which will give every one of you the low down information required for a powerful enthusiasm for one of the most trusted in stages the Gemini Exchange.
We should find all the more right currently review
Gemini Review :
About Gemini Exchange
Twin kin developed Gemini Winklevoss in the year 2014. The Gemini exchange is arranged in New York. The Gemini crypto exchange is open in essentially all US states, similarly as UK, Canada, Puerto Rico, Singapore, South Korea, and Hong Kong. In 2016, Gemini transformed into the world's recently approved Ether exchange.
It positions 82th greatest exchange on earth as showed by 24-hour volume on Coinmarketcap. While Gemini Bitcoin and Gemini Ethereum trading volumes are high, the exchange is endeavoring with all undertakings to fight with those stages offering a predominant piece of the cryptographic types of cash, for instance, Binance.
Reinforced Currencies
Gemini offers crypto to fiat portions and a BTC/ETH grandstand, which makes it a quick contender to any similarity to Coinbase, Bitstamp, and Kraken. At present, it is one of the most respected and ensure about exchanges open. This is in light of the fact that it has more features to help secure customers against developers. Also, it is one exchange for the CBOE Bitcoin future settlement. Gemini Mobile application is directly available, which is amazingly basic and versatile to use.
How to use Gemini?

https://preview.redd.it/qnowl19fwaj41.jpg?width=720&format=pjpg&auto=webp&s=1819eeac9d4c44681c0afe616d387b60a78f7c8e
1) Go to the official site and snap the "Register" tab on the upper right corner.
Enter your name, email address, and mystery word for your own record. While affirming your email address, it is critical to :
Affirm your email address and enter both your region and phone number, by then you can set up 2-Factor Authentication (2FA) which will be an additional layer of security to your record.
Incorporate your monetary equalization. Starting at now, Gemini recognizes simply bank moves and wires, as a methodology for putting away holds.
To check your record, move your organization ID proof. This will help you with executing and trade US Dollars. Moreover, it will help Gemini with as per the Bank Secrecy Act (BSA) and Anti Money Laundering (AML) rules. The affirmation time may run from a couple to a couple of days.
Subsequent to completing of all the above strategies, you can use your record for financing.
gemini crypto exchange
2) Deposit Currency
In the Menu, click Transfer Funds, by then find a good pace Bank Transfer and Exchange. Enter the whole you have to store here. Moreover, note $500 consistently is the most extraordinary most extreme for Bank moves.
3) Trading Bitcoin and Ethereum
As you store by methods for bank move, they are quickly available for trading. you can purchase by encountering the menu and picking your supported trading pair. For example, for Bitcoin BTC/USD similarly as Ethereum ETH/USD.
In the wake of embeddings the expense and sum it will process your buy demand. There is another choice to trade by methods for the business community which has exhibit orders gave by various customers.
After the fulfillment of your purchase, your record will be acknowledged with your Ethereum just as Bitcoin purchases. You can sell your computerized cash on the Gemini crypto exchange. Regardless of the way that you can't make a withdrawal until your bank move has been completely arranged.
gemini sponsor organization
4)Trading Limits
By and by, For most trade strategies, there are no limitations on trades. In any case, Automated Clearing House (ACH) moves have the greatest store most remote purpose of $500 day and $15,000 consistently for singular record holders. Associations have a state of restriction for making ACH stores of $10,000 consistently or $300,000 consistently.
Gemini Marketplace
There is a Gemini business focus that runs 24*7. Here, you can have indistinguishable number of solicitations from you wish to have, with a variety of trading choices. These include:
Market Orders – With the present best open worth, the solicitations here starting dealing with quickly against resting orders.
Purpose of repression Orders – The sum is filled at or better than a given expense. The sum which isn't dispatched lays on the solicitation book diligently until it is filled or dropped.
Brief or Cancel (IOC) Limit Orders – The sum is filled at or better than a given expense. The sum which isn't filled rapidly is dropped and doesn't lay on the perpetual solicitation book.
Maker or Cancel (MOC) Limit Orders – The sum lays on the solicitation book continually at a foreordained expense. Furthermore, the entire solicitation is dropped if there is any sum that can be filled immediately.
All solicitations made on this stage are totally sponsored and fill in as a full hold exchange. In any case, there is no edge trading Gemini. Despite that, reliably the customer's record equality should have more balance than the exceptional excitement on demand books. Also, all open solicitations decline your available leveling until they are fulfilled or dropped
Gemini Fees
In the event that there ought to be an event of moves, Gemini crypto exchange has a low cost technique and stage customers can store Bitcoin, Ether, at freed from charges for both bank and wire moves. In any case, banks will charge a cost for the customers to wire money to their Gemini account. Withdrawals on the stage are free and all customers will have 30 free withdrawals for each calendar month.
Any withdrawals more than this total will pull in costs comparable to the mining charges payable on either sort out. The costs are around 0.001 BTC or 100,000 Satoshi per trade on the Bitcoin Network and 0 GWei or 0 ETH per trade on the Ethereum Network.
MakeTaker charges
0.25% is the trading costs for both sellers(makers) and buyers(takers). If it shows up at certain trade volumes, charges will be reduced. The maker charge is 0% for 30-day trading volumes that outperform 5,000 Bitcoin or 100,000 Ether. For a comparable trading entirety, the taker run after will bubble to 0.10%.
Gemini uses dynamic maker and taker charge or reimbursement timetable, and sellers can get reimbursement on liquidity-creation trades. The particular entireties depend upon net trading volumes and the buy and sell extent over a multi day time allotment. The data are adjusted as expected and more information on charges can be found here.

https://preview.redd.it/exgucn9gwaj41.png?width=225&format=png&auto=webp&s=34fc66d46df40444abcc9ac61308106b2e3f57c0
charges
Concerning purchases, the base purchase whole for Bitcoin is 0.00001 BTC, or 1000 satoshis, for Ether, the base sum is 0 .001 ETH
Security-at-Gemini
Bitcoin Gemini Reviews, is a strong exchange that has a better than average reputation in everyone. The exchange goes about as a way into the universe of cryptographic cash trading. This may be in light of the fact that various customers first quit concerning purchasing Bitcoin and Ethereum. In comprehension to Coinbase, Gemini has a near space. Wherein it allows its customers to make trade clearly to and from their records.
Gemini is a not too bad choice, for people looking to securely trade either Bitcoin or Ethereum. The exchange is a potential decision for new competitors to the market similarly as logically settled sellers who like to make trades by methods for their monetary adjusts.
Latest News
Dec 17, 2019: Well realized cash related pro association State Street picked Gemini exchange for the new propelled asset pilot adventure.
Nov 19, 2019: Gemini exchange wanders into NFT's and acquired Nifty Gateway Solution, a phase to buy Non-Fungible Tokens.
Nov 14, 2019: The exchange added Stop-Limit to the solicitations being executed on the stage.
Sep 11, 2019: Gemini dispatches Gemini Custody with 18 cryptographic types of cash
Sep 5, 2019: Gemini Clearing™, a totally electronic clearing and settlement answer for off-exchange exhibited by the stage
Aud 27, 2019: Gemini Joins the Silvergate Exchange Network
Aug 22, 2019: Gemini loosens up and reaches to Australia
April 15, 2019: Gemini wallet support Segwit
Gemini Bitcoin Exchange Review
Rundown: How to Buy Bitcoins by means of Gemini
Register a record at Gemini and check email code sent to you.
Set up two-factor validation (2FA).
Give checked ID as a major aspect of the confirmation procedure.
Include ledger.
Store cash by clicking "Move Funds", "Store into Exchange" and afterward picking the sort of bank move.
Snap "Purchase" catch and round out the buy structure to get BTC.
Is Gemini Safe?
Gemini is extremely worried about its clients' wellbeing, in this manner it utilize three arrangements of security...
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Gemini Comparison with Other Exchanget
To exchange bitcoins you have to initially peruse and think about various BTC trades...
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In Which Countries Is Gemini Available?
You can arrange bitcoins through Gemini nearly in any nation, yet discover where you can't...
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Guide: Buying BTCs at Gemini
It is anything but difficult to purchase bitcoins on Gemini trade, knowing the essential standards and prerequisites...
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FAQ
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With developing worth and system, bitcoin is ready to turn into the main online resource in the realm of ventures.
Gemini bitcoin trade survey
This article is worried about one of the most well known trades with regards to BTC exchange, Gemini.
What Is Gemini?
Gemini is one of the realized digital money trades that offer an assortment of exchange apparatuses for speculators that have some involvement with the business. The organization that claims the stage is enrolled as LLC in New York State, USA, offering USD to BTC and USD to ETH exchange trade.
Purchase BTC at Gemini
Propelled in 2015, Gemini offers two unmistakable commercial centers, them being:
customary trade administrations;
bitcoin barters.
Upon its appearance, the stage offered its administrations in the US just, bit by bit including different nations all the while. The organization is possessed by the Winklevoss twins, who guarantee that they are have about 1% of the complete BTC volume.
Winklevoss siblings are Gemini's proprietors
Gemini Security
With regards to the wellbeing of your assets, Gemini applies three arrangements of safety efforts that should be referenced. To start with, the stage applies advanced money safety efforts by offering hot and cold stockpiling wallets, where cold wallets have multisig capacities to forestall hacking endeavors at your equalizations.
Gemini security
The subsequent measure is identified with the exchange where the entirety of the exchanges at Gemini are led through pre-financed accounts, implying that merchants and purchasers can't post orders on the off chance that they don't have adequate BTC or fiat monetary forms in their parities. Finally, the site security comprises of two-factor verification (2FA) and HTTP encryption of all data in regards to merchants and stage's exchanges from outsiders.
Accessible Payment Methods
As of now, Gemini acknowledges stores communicated distinctly in ACH (for US dealers) and wire moves (for every other person) communicated in USD. Credit or check cards, money stores, PayPal and numerous different alternatives are wanted to be remembered for the future however are not accessible at the present time.
Buy bitcoin by means of wire move
You ought to buy in to the Gemini news source since the organization will promote the new store strategy through that channel of correspondence.
Shouldn't something be said about Fees?
While saving or pulling back your assets communicated in fiat or computerized monetary forms, dealers would find that the administrations are done totally free. Then again, Gemini charges exchange expenses are charged dependent on a month to month net exchange volume. Taker charges can extend from 0.15% to 0.25% while creator expenses from 0% to 0.25%.
Expenses at the trade
Does Gemini Have Limits?
Cryptographic money and wire stores and withdrawals don't have any constraints forced on dealers, implying that in the event that you utilize the said administrations, you can buy, sell and pull back bitcoins with no deterrents. Singular American financial specialists utilizing ACH move, then again, have $500 every day and $15.000 month to month while institutional individuals have $10.000 day by day and $300.000 month to month store limits.
No restrictions for purchasing bitcoin
Gemini Comparison
When thinking about exchanging at any trade, you should hope to analyze the administrations, expenses and impediments with other comparative stages. In this manner, we have assembled an examination investigation where we benchmarked Gemini against two other well known decisions with regards to BTC buy: Kraken and Coinbase.
Gemini versus Kraken
Kraken, much the same as Gemini, acknowledges bank moves just, with the significant contrast being that Kraken permits 5 fiat cash stores. Notwithstanding bitcoin, there are 14 more altcoins that you can exchange with at Kraken while the two trades force check on their customers as they are both controlled organizations.
Gemini versus Kraken
Kraken is fundamentally the same as Gemini as far as expenses, as creatotaker charges go somewhere in the range of 0% and 0.26%. Bank moves do accompany little expenses at Kraken while Gemini acknowledges stores for nothing. In conclusion, while Gemini exchanges two or three nations in particular, Kraken is all around accessible.
Coinbase versus Gemini
Coinbase is viewed as one of the biggest bitcoin suppliers on the planet, offering its administrations in 32 nations, USA notwithstanding. The installment strategies at Coinbase are PayPal, bank moves and credit/check cards, two more than Gemini.
Request bitcoins by means of Coinbase trade
Confirmation is an absolute necessity have at Coinbase, much like in Gemini while expenses are a ton lower at Gemini, as you pay between 1.49% to 3.49% from exchange's an incentive at Coinbase. The two trades offer BTC vaults and wallet administrations while Coinbase additionally exchanges with Litecoin which are inaccessible at Gemini.
Gemini BTC Exchange in Different Countries
Gemini's administrations are accessible in a bunch of nations around the globe, them being the US (5 states not upheld), Canada, Japan, South Korea, Hong Kong, Singapore and the United Kingdom. The five US expresses that are not bolstered are Alaska, Arizona, Hawaii, Oregon and Wisconsin.
Gemini trade in various nations
Is It Legal?
Gemini is an American LLC that adheres to New York Banking Law guidelines, actualizing BSA (Bank Secrecy Act) and AML (Anti-Money Laundry Compliance Program) arrangements, implying that customary reviews of the BSA/AML programs are being executed. Moreover, the firm requires all merchants to have reserves pre-saved before the exchange.
Bitcoin Gemini Price, is legitimate
Another significant factor of the stage's lawfulness is the way that since its beginning, Gemini has promptly accessible money related report dating 7 years back.
Does Gemini Support Its Customers?
Concerning the client service, Gemini has a thorough FAQ page where a large portion of the exchanging questions have been replied. Notwithstanding the FAQ, you can likewise top off a shape and present a solicitation to the Gemini group with respect to any issue that you may look on the stage.
Gemini client service
Because of the regular upkeep of the site's administrations, Gemini has a "Status" page where financial specialists can see which administrations and API instruments are working right now and which are definitely not.
Manual for Buy Bitcoins from Gemini
When you have gotten the cash at your Gemini account, click "Purchase" button on the dashboard page.
Buy page for bitcoins at Gemini
Presently, round out the structure on the right, giving request type, volume or estimation of BTC you wish to get and click "Purchase" to get bitcoins in your record immediately. Try to check the BTC cost at the upper left piece of the "Purchase" page to ensure it has not changed at the time you have begun the buy procedure.
Enrollment
It is totally allowed to enroll a record at Gemini bitcoin trade and the procedure begins once you click "Register" button at the upper right corner of the site. Give your complete name, email address and secret key in subsequent stage and snap "Make My Account".
Make account at Gemini
You will get an email code which you should duplicate glue into the Gemini's check page.
Contribution of enactment code on Bitcoin Gemini Registration
The accompanying advances will open up for you to finish, in this way you have to arrangement your 2FA security apparatus, include a financial balance and give checked ID to finish the enrollment methodology.
To what extent Should I Wait for Verification?
Check stage can take between an hour and a day, contingent upon various enlistment applications Gemini has right now you have begun the procedure. You ought to set up every single essential report before you start and arm yourself with persistence as a stage would set aside effort to process your data.
Confirmation process at Gemini
Would you be able to Get Bitcoins Without Verification?
At the enlistment page, you are required to check your personality and frog your financial balance. When you have presented the records, you can't enter the stage's exchange page until the help affirms your subtleties. In this way, it is unimaginable to expect to buy supply of bitcoins without confirmation.
Obligatory confirmation before purchasing BTCs at Gemini
How to Add Money to Account?
When you have finished the enrollment and confirmation of your record, click button "Move Funds", situated in the top segment of your dashboard page. In following stage, click "Store Into Exchange" and pick either USD or Wire alternative, contingent upon what financial balance you have included at enrollment stage.
Add assets to Gemini account
You can likewise store bitcoins in your Gemini wallet too.
Store BTCs in the Gemini wallet
At the last phase of wire move subsidizing process, you have to give bank's wiring data, for example, your record number and other significant data that can be found by clicking "Bank Settings".
Give bank's wiring data
When data has been given, basically click "Store" button which will show up at the base of the page.
Secure Your Account
Keep the entirety of your record and wallet passwords out of the programmer's compass by continually evolving them. Monitor the new secret key by keeping in touch with them down on a bit of paper as to not overlook them meanwhile.
Record with 2FA on trade
You as of now have 2FA from the enlistment stage and don't give your private data to some other dealer on the stage.
FAQ
To what extent Does It Take to Make Transaction?
It takes 4 to 5 days to store assets in your Gemini account while exchanges themselves are done following you the exchange started. Diverse request types have distinctive length, contingent upon what dealer wishes to accomplish.
Sitting tight for exchanges on the trade
Would i be able to Buy Bitcoin with PayPal at Gemini?
Now, brokers can't utilize PayPal as store technique at Gemini. You ought to buy in to the trade's news channel as to get warnings if the strategy opens up to store alternative later on.
Does Gemini Have a BTC Wallet?
The stage offers two kinds of wallet administrations, one being "hot" wallet and another being vault stockpiling. Both are based just, with the principle contrast being that vault stockpiling gives extra security keys that are utilized while moving bitcoins all through the wallet. Along these lines, vault administrations are esteemed as more secure than the standard BTC wallet.
Gemini wallet
Pulling back Your Bitcoins from Gemini
At the dashboard page, click "Move Funds" and afterward "Pull back From Exchange" to begin the procedure. Pick bitcoins to continue towards the withdrawal structure. Determine the measure of BTC you with to escape the trade and give your wallet address. Snap "Survey Withdrawal" and check the data. When you are fulfilled, click "Affirm" to end the procedure. Your coins will show up inside 24 hours to your ideal area.
Pull back BTC from Gemini
Instructions to Order BTC with Credit/Debit Card at Gemini
As with PayPal, it is preposterous to expect to buy bitcoins with the assistance of credit or charge cards at Gemini, since the choice isn't accessible right now. Stay aware of trade's news and declarations as the CC/DC choice may open up later on.
Gemini Mobile App
Portable stages are yet to be created by Gemini, implying that exchange is accessible on perusing stage as it were. Watch out for the declaration, as the organization may make the push towards telephone exchange not so distant future.
Purchase BTC just on Gemini perusing stage
Gemini Analogs
Aside from Gemini, we at BitcoinBestBuy have checked on numerous different stages that can assist you with getting bitcoins effectively and securely. They all change regarding local accessibility, expenses, buy strategies and confirmation necessities, so make a point to check different articles also.
Get BTC at digital money stages
Coinbase Exchange Review
Being one of the biggest BTC exchanging stages the world, we made a survey of their charges, store choices and other important data with respect to the trade. We have likewise given bit by bit controls on the best way to buy and pull back assets and coins from Coinbase.
Coinbase survey
Full Review Coinbase Bitcoin Gemini Exchange
Find out About Kraken
Kraken is another trade that offers bitcoins through bank moves and its administrations are all inclusive accessible. We made a survey of Kraken's advantages and disadvantages, giving our customers a diagram of the trade as far as expenses the organization charges, check prerequisites and buy procedures of the stage.
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Launching Native Tokens With Just One Click? Every one can issue native token that has the same function as ETH

Launching Native Tokens With Just One Click? Every one can issue native token that has the same function as ETH

https://preview.redd.it/yetb5638qol41.png?width=1600&format=png&auto=webp&s=75b4bd8fef0aa716a8d2624e3e8c91ffa2e3fc18
Native token refers to tokens that are directly issued by the blockchain infrastructure for maintaining normal operations. These tokens are used for realizing equity and for implementing fixed functions of the blockchain systems. Prime examples are Bitcoin, Ethereum, and QKC. On the basis of application protocols, tokens that are built on top of existing blockchain systems and are used for deploying smart contracts are known as smart contract tokens. It is widely adopted on the dApps of different public chains, of which ERC20 protocol is the most famous.
The ERC20 protocol that runs on Ethereum stands out as the common standard for the digital token market thanks to its versatility and convenience. The ERC20 tokens that are issued by such contracts became a credible proof of assets that help smart and medium scale projects to raise funds. In particular, during 2017, thousands of projects issued ERC20 tokens for financing, which became a propelling force for the bull market of cryptocurrencies to flourish that year.
However, the ERC-20 contract is crippled by its functions and relevance: it only has two main usages: approval and exchange, which significantly impact the room of applications and usages. Many public chains have issued dynamic tokens using the ERC20 standard. If one can add more functionalities to the ERC20 contract, such that the tokens issued can realize functionalities that resemble that of Ethereum’s native token ETH, it can result in multiple benefits. Not only can it can lower users’ costs and benefits more developers, it would also stimulate more developers to build applications on the platform. In addition, the convenience of multinative tokens will significantly lower the frequency of token exchanges within DeFi applications, which in turn streamline the operations and thus lower cost of processing fees, all of which makes DeFi easier to use.

A. The functional value of smart contract tokens (such as ERC-20) as an financial instrument:

The ERC20 standard that was launched in 2015 has transformed the landscape of the cryptocurrency industry. The ERC20 standard requires a smart token contract to specify six parameters and realize a number of credible, widely-adopted basic functionalities.
  1. Functions that assign the initial distribution of tokens:
The totalSupply function sets up the initial distribution of tokens, which limits the maximum supply of a certain token. This smart contract will stop issuing tokens when the maximum is reached.
The balanceOf function provides the number of tokens held by a given address.
2. Functions that realize token transfer:
The transfer function transfers a number of tokens directly from the message sender to another address.
The transferFrom function allows a user (or contract) to delegate another user (or contract) to transfer owner funds to a third party address.
3. Functions that execute approval of delegation:
The approve function allows the approval of a delegation. It approves the delegator to use transformFrom to transfer tokens for the delegatee with uplimit allowance, which provides the maximum number of tokens allowed to be transferred from a given address by another given address.
By this design, different participants are able to make barrier-free transactions based on the same protocol. Also, the code of different exchanges and wallets can be consistent and is compatible with any token based on ERC20, which allows ERC20 tokens to enjoy ultimate liquidity. Moreover, the transaction fee needed for paying for frequent transactions pushes the demand for the native token, which in turn helps Ethereum rank second by market capitalization and applications.

B. Bottleneck of Massive Adoption Faced By Smart Contract Tokens Such as ERC20:

There exists some weaknesses in ERC20 other than its financing function. These deficiencies create a certain degree of inconvenience and in some cases, even irreversible loss of assets.
  1. Loss of tokens
When a user wants to transfer tokens to a particular smart contract and deploy such smart contract such as for borrowing purpose, an intuitive way is to transfer ETH or ERC 20 token to the target contract address. ETH can be transferred in this manner easily whilst ERC20 can be transferred yet the transferred ERC20 tokens will enter into an forever-inoperable state, which is the same as if the tokens have disappeared.
2. Gas fees require to be paid using native tokens and heightens the hurdles for new users to enter
When using ERC20 tokens for transactions, in order to process the transaction, one would need to pay transaction fees using ETH native tokens since ERC20 tokens do not carry such functional value; such constraint exists due to the positioning of the original design of ERC20. Within such design, during buying and selling of securities, one would need to prepare an extra type of currency to pay for the transactions, a type of currency that only serves for that particular purpose and for nothing else. In comparison, while buying or selling stocks in real life, one can simply deduct the cost of transactions by deducting the equivalent monetary amount of security with no additional cash. ERC20 transactions are different from that since users need to acquire Ethereum to pay for ERC20 transactions and to painstakingly study the reasons for which ETH is necessary for paying transactions fees; this extra step becomes daunting for novice who are new to cryptocurrencies and blockchains.
3. Other supplementary contracts are not compatible to the original ERC20 contract, necessitating forking or reissuance of new tokens
ERC20 resembles a “second-class citizen” on the Ethereum blockchain. When it carries out contract-related interactions, it is not allowed to directly use the default functions to execute. Instead, it would require going through multiple cumbersome procedures and increase the level of difficulty of creating dApps. Adding to the disadvantages against existing internet competitors are the longer execution time of dApps and higher transaction fees compared to its Internet counterparts. Therefore, for some developers, in order to develop dApps more freely, free of the limitations of ERC20 tokens imposed by the Ethereum ecosystems, they choose to develop their own public chains and have their own say in the infrastructure, which at the end lowers the efficiency of writing dApps.
Looking at the landscape of public chains in general, some public chains that are modeled after Ethereum have also adopted a similar design where its smart contract tokens also bear similar deficiencies. While the industry is growing over time, such deficiencies have plagued the entire industry.

C. QuarkChain’s multi-native token provides upgrades for smart contract token

To overcome this limitation in functionality, QuarkChain is now launching a unique multi-native token contract (referencing QCEP-5, QCEP-6), which attempts to resolve the problems appeared in smart contract tokens such as those appearing in ERC20. The tokens living on QuarkChain’s ecosystem have the same rights as those enjoyed by native tokens QKC and can take up more functional values such as contract deployment and payment of transaction fees than merely as an financial instrument. Developers and users no longer need to face the quagmire of two-tokens-with-different-rights and forsake developing and using smart contract tokens. QuarkChain’s multi-native token will lower the cost of development and learning, enabling more industry applications to appear.
The Advantages of Multi-native Tokens
On the QuarkChain mainnet, multinative tokens have the same status as that of QKC within the QuarkChain system; it can deploy contracts, cross chains, and pay for transaction fees if certain criteria are satisfied. Other than not being able to participate in governing the QKC network, native tokens can realize all functions of QKC, including cross-chain transfer of fees; it will also overcome the problem of inconvenience encountered by most of the DeFi. In future contracts, we will improve the functions of multinative tokens to be identical as that of QKC and eliminate the last barrier of applications of multinative token.
How to Launch Native Tokens
  1. At the beginning phase of project development, we will host regular auctions on the chain (weekly or monthly, TBD). Participants will need to bid using QKC and only one winning bidder will obtain the rights to mint tokens from this round of auction.
  2. Once a token name has been taken by a winning bidder, it cannot be auctioned again. The only way to get the token name is to have its ownership transferred from the existing token owner.
  3. At the end of the auction, if any participants in the community need to use the newly minted native tokens to pay for transaction fees, they can deposit a certain quantity of QKC as the reserve for transaction fees. When executing the transaction, the network will look up the transaction fee and the exchange rate between issuing amount and transaction fees and deduct the corresponding amount from the QKC reserve. The token economics will be determined by the winning bidder. If one would like to keep the total number of tokens constant over time, after issuing the tokens, the winning bidder can pass the right to token issuance to a system address.
The Design of Transactions Fees for Multi-native Token
QCEP-6 contracts will be configured on each shard. The participants within the token community can choose to equip the token with the ability to pay for transaction fees. To enable this feature, community participants will need to provide QKC to be saved on system contracts whereby the system will convert QKC automatically for exchanging tokens. This conversion is analogous to exchanging foreign currencies from a bank. After conversion, the converted QKC will become the transaction fees for the miners.
In terms of exchange rate, the QuarkChain mainnet allows users to specify the exchange rate between the multinative token and QKC. Any user can interact with the “universal native token manager” smart contract to propose exchange rate. The agreed exchange rate will convert multinative token into corresponding amount in QKC to pay for transaction fees. In this way, normal users would not require buying extra QKC to pay for transaction fees, making this process more convenient for all.

Estimated Time of Announcement

The first Multinative token will be announced soon. As for the time for Multinative token auction, please pay attention to our official channels for latest announcements.
For more details:
Thanks for reading this. QuarkChain always appreciates your support and company.
Website
https://www.quarkchain.io
Telegram
https://t.me/quarkchainio
Twitter
https://twitter.com/Quark_Chain
Medium
https://medium.com/quarkchain-official
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https://www.reddit.com/quarkchainio/
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https://www.facebook.com/quarkchainofficial/
Discord
https://discord.me/quarkchain
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Vitalik's Tweet Storm - History and state of Ethereum's Casper research

His tweet here
Today I am going to make a tweet storm explaining the history and state of Ethereum's Casper research, including the FFG vs CBC wars, the hybrid => full switch, the role of randomness, mechanism design issues, and more.
Ethereum proof of stake research began in Jan 2014 with Slasher Though the algorithm is highly suboptimal, it introduced some important ideas, most particularly the use of penalties to solve the nothing at stake problem. That said, the penalties that I used were very small, only canceling out signing rewards. Vlad Zamfir joined in mid-2014, and he quickly moved toward requiring validators to put down deposits, much larger in size than rewards, that could be taken away for misbehavior. Here's Vlad's retelling
We spent much of late 2014 trying to deal with "long range attacks", where attackers withdraw their stake from deposits on the main chain, and use it to create an alternate "attack chain" with more signatures than the main chain, that they could fool clients into switching to. If the attack chain diverges from the main chain at a fairly recent point in time, this is not a problem, because if validators sign two conflicting messages for the two conflicting chains this can be used as evidence to penalize them and take away their deposits.
But if the divergence happened long ago (hence, long range attack), attackers could withdraw their deposits, preventing penalties on either chain. We eventually decided that long range attacks are unavoidable for pretty much the reasons PoW proponents say. However, we did not accept their conclusions. We realized that we could deal with long range attacks by introducing an additional security assumption: that clients log on at least once every four months (and deposits take four months to withdraw), and clients simply refuse to revert further than that. This was anathema to PoW proponents because it feels like a trust assumption: you need to get the blockchain from some trusted source when you sync for the first time. But to us dirty subjectivists, it did not seem like a big deal; you need some trusted source to tell you what the consensus rules of the blockchain are in any case (and don't forget software updates), so the additional trust required by this PoS assumption is not large. Here's Vlad's retelling
Now that we settled on deposits and penalties, we had to decide what those deposits and penalties are. We knew that we wanted an "economic finality" property, where validators would sign on blocks in such a way that once a block was "finalized", no conflicting block could be finalized without a large portion of validators having to sign messages that conflict with their earlier messages in a way that the blockchain could detect, and hence penalize. I went on a big long, and ultimately unproductive, tangent on a direction I called "consensus by bet
Consensus by bet was an interesting construction where validators would make bets on which block would be finalized, and the bets themselves determined which chain the consensus would favor. The theory was that PoW also has this property, as mining is a bet where if you bet on the right chain, you gain (reward - mining cost), and if you bet on the wrong chain, you lose the mining cost, except with PoS we could push the odds on the bets much higher. The odds on validators' bets would start off low, but as validators saw each other getting more and more confident about a block, everyone's odds would rise exponentially, in parallel, until eventually they would bet their entire deposits on a block. This would be "finality".
In the meantime, Vlad started heavily researching mechanism design, particularly with an eye to making Casper more robust against oligopolies, and we also started looking at consensus algorithms inspired by traditional byzantine fault tolerance theory, such as Tendermint. Vlad decided that traditional BFT was lame (he particularly disliked hard thresholds, like the 2/3 in PBFT and Tendermint), and he would try to effectively reinvent BFT theory from scratch, using an approach that he called "Correct by Construction" (CBC). In Vlad's own words
The correct-by-construction philosophy is very different from traditional BFT, in that "finality" is entirely subjective. In CBC philosophy, validators sign messages, and if they sign a message that conflicts with their earlier message they have to submit a "justification" proving that, in the relevant sense, the new thing they are voting for "has more support" than the old thing they were voting for, and so they have a right to switch to it. To detect finality, clients look for patterns of messages that prove that the majority of validators is reliably voting for some block B in such a way that there is no way they can switch away from B without a large fraction of validators "illegally" switching their votes.
For example, if everyone votes for B, then everyone votes on a block that contains everyone's votes for B, that proves that they support B and are aware that everyone else supports B, and so they would have no legitimate cause for switching to something other than B. I eventually gave up on consensus-by-bet because the approach seemed too fundamentally risky, and so I switched back to trying to understand how algorithms like PBFT work. It took a while, but after a few months I figured it out. I managed to simplify PBFT and translate it into the blockchain context, describing it as four "slashing conditions", rules that state what combinations of messages are self-contradictory and therefore illegal if a block is finalized, then there is no way for a conflicting block to get finalized without >= 1/3 violating a slashing condition (ii) if a block is finalized, 2/3 honest validators can always cooperate to finalize a new block. So the algorithm can neither "go back on its word" nor "get stuck" as long as > 2/3 are honest.
I eventually simplified the minimal slashing conditions down from four to two, and from there came Casper the Friendly Finality Gadget (FFG), which is designed to be usable as an overlay on top of any PoW or PoS or other blockchain to add finality guarantees. Finality is a very significant advancement: once a block is finalized, it is secure regardless of network latency (unlike confirmations in PoW), and reverting the block requires >= 1/3 of validators to cheat in a way that's detectable and can be used to destroy their deposits. Hence, the cost of reverting finality can run into the billions of dollars. The Casper CBC and Casper FFG approaches both achieve this, though in technically different ways. Note that Casper CBC and Casper FFG are both "overlays" that need to be applied on top of some existing fork choice rule, though the abstractions work in different ways.
In simplest terms, in Casper CBC the finality overlay adapts to the fork choice rule, whereas in Casper FFG the fork choice rule adapts to the finality overlay. Vlad's initial preference for the fork choice rule was "latest message-driven GHOST", an adaptation of GHOST to proof of stake, and my initial preference was to start off with hybrid PoS, using proof of work as the base fork choice rule. In the initial version of Casper FFG, proof of work would "run" the chain block-by-block, and the proof of stake would follow close behind to finalize blocks. Casper CBC was full proof of stake from the start. At the same time, Vlad and I were both coming up with our own respective schools of thought on the theory of consensus incentivization. Here, a very important distinction is between uniquely attributable faults, where you can tell who was responsible and so can penalize them, and non-uniquely attributable faults, where one of multiple parties could have caused the fault.
The classic case of a non-uniquely-attributable fault is going offline vs censorship, also called "speaker-listener fault equivalence". Penalizing uniquely attributable faults (eg. Casper FFG slashing conditions) is easy. Penalizing non-unquely-attributable faults is hard. What if you can't tell if blocks stopped finalizing because a minority went offline or because a majority is censoring the minority? There are basically 3 schools of thought on this issue:
In November 2017, the Casper FFG slashing conditions, plus my ideas for solving "the 1/3 go offline" problem through a "quadratic leak" mechanism, became a paper . Of course, I was well aware that appealing to the social layer to solve 51% attacks was not a very nice thing to do, so I started looking for ways to at least allow online clients to automatically detect which chain is "legitimate" and which is the "attack" in real time.
Here is one of my earlier ideas It was something, but still suboptimal; unless network latency was exactly zero, there was only a guarantee that clients' suspicion scores would differ by at most delta, not that clients would fully agree In the meantime, my main criticism of Vlad's model had to do with "discouragement attacks", where attackers could credibly threaten to make a 51% attack that causes everyone to lose money, thereby driving everyone else to drop out, thus dominating the chain at near-zero cost. Vlad (along with Georgios Piliouras) started doing economic modeling to estimate the actual cost of such an attack under his model.
It's worth noting here that all of these issues are not unique to proof of stake. In fact, in proof of work, people tend to simply give up and assume preventing 51% attacks is outright impossible, and a 51% attack is a doomsday that must be prevented at all costs. But, as is the Ethereum tradition, Vlad and I were both unaware that the word "ambitious" can be anything but a compliment, and kept on working on our separate approaches to disincentivizing, mitigating and recovering from 51% attacks.
In early 2018, Vlad's work on CBC started to move forward quickly, with great progess on safety proofs. For the state of progress in March 2018, see this epic two-hour presentation In the meantime, Casper FFG was making huge progress. A decision to implement it as a contract that would be published to the Ethereum blockchain made development easy. On Dec 31, 2017 at 23:40, we released a testnet written in python
Unfortunately, development of FFG then slowed down. The decision to implement FFG as a contract made some things easier, but it made other things harder, and it also meant that the eventual switch from EVM to EWASM, and single-chain Casper to sharded Casper, would be harder. In addition, the team's work was being split between "main chain Casper" and "shard chain Casper" and it was clear there was enormous unneeded duplication of effort going on between the Casper and sharding teams.
In June 2018, we made the fateful decision to scrap "hybrid Casper FFG as a contract", and instead pursue full Casper as an independent chain, designed in such a way that integrating sharding would be much easier. The switch to full proof of stake led me to start thinking much harder about proof of stake fork choice rules. Casper FFG (and CBC) both require the entire validator set to vote in every "epoch" to finalize blocks, meaning there would be tens to hundreds of signatures coming in every second. BLS signature aggregation makes this practical in terms of computational overhead but I wanted to try to take advantage of all of these extra signatures to make the chain much more "stable", getting "100 confirmations" worth of security within a few seconds.
Here were my initial attempts However, all of these approaches to the fork choice rule had a weakness: they split up validators into "attesters" and "proposers", and the proposers, being the key drivers of block production, had outsized power. This was undesirable, primarily because it required us to have a strong source of on-chain random number generation to fairly pick the proposers. And on-chain randomness is hard, with simple approaches like RANDAO looking more and more problematic
Justin Drake and I went off to solve this problem in two ways, Justin by using verifiable delay functions which have a deterministic and verifiable output, but take a large amount of unparallelizable sequential time to compute, making manipulation ahead of time impossible and myself by making a major concession to the Cult of Vlad™, using GHOST-based fork choice rules to greatly reduce the dependence on proposers, allowing the chain to grow uninterrupted even if >90% of proposers are malicious, as long as >50% of attesters are friendly.
Vlad was very happy, though not fully: he preferred a version of GHOST based on validators' latest messages, whereas I preferred a version based on immediate messages Around this time I also managed to come up with a way to "pipeline" Casper FFG, reducing time-to-finality from 2.5 epochs to the theoretically optimal 2 epochs: I was very happy that the RPJ fork choice rule (which I have since renamed "immediate message-driven GHOST") is nicely compatible with Casper FFG in a way that most others are not and that it has a very important "stability" property: that the fork choice is a good prediction of the future fork choice. This seems obvious, but is very easy to accidentally make fork choice rules that do not have this property.
The most recent development of all is a result that latest message driven GHOST may, due to a technicality, only give 25% fault tolerance within two rounds, but immediate driven message GHOST (with FFG or CBC) still gives the full 33% (no writeup yet). The main tradeoff between FFG and CBC is that CBC seems to have nicer theoretical properties, but FFG seems to be easier to implement. In the meantime, a lot of progress on verifiable delay functions has been made
Also, I recently decided to look into Leslie Lamport's old 1982 paper, where he had a consensus algorithm that has 99% fault tolerance if you add the assumption that all nodes, including observers, are online with low network latency The network latency assumptions arguably make this unsuitable as a primary consensus algorithm. However, there is one use case where it works really well: as a substitute for suspicion scores for 51% censorship detection.
Basically, if a 51% coalition starts censoring blocks, other validators and clients can detect that this is happening and use the 99% fault tolerant consensus to agree that this is happening and coordinate a minority fork. The long-run goal of this research is to reduce reliance on the social layer as much as possible, and maximizing the cost of destabilizing the chain enough so that reverting to the social layer is necessary.
What's left now? On the FFG side, formal proofs, refinements to the specification, and ongoing progress on implementation (already started by >=3 teams!), with an eye to safe and speedy deployment. On the CBC side, much of the same. Onward and upward!
submitted by OneSmallStepForLambo to ethtrader [link] [comments]

We are Julian Assange, Sarah Harrison, Renata Avila and Andy Müller-Maguhn of the Courage Foundation AUA

EDIT: Thanks for the questions, all. We're signing off now. Please support the Courage Foundation and its beneficiaries here: Edward Snowden defence fund: https://edwardsnowden.com/donate/ Bitcoin: 1snowqQP5VmZgU47i5AWwz9fsgHQg94Fa Jeremy Hammond defence fund: https://freejeremy.net/donate/ Bitcoin: 1JeremyESb2k6pQTpGKAfQrCuYcAAcwWqr Matt DeHart defence fund: mattdehart.com/donate Bitcoin: 1DEharT171Hgc8vQs1TJvEotVcHz7QLSQg Courage Foundation: https://couragefound.org/donate/ Bitcoin: 1courAa6zrLRM43t8p98baSx6inPxhigc
We are Julian Assange, Sarah Harrison, Renata Avila and Andy Müller-Maguhn of the Courage Foundation which runs the official defense fund and websites for Edward Snowden, Jeremy Hammond and others.
We started with the Edward Snowden case where our founders extracted Edward Snowden from Hong Kong and found him asylum.
We promote courage that involves the liberation of knowledge. Our goal is to expand to thousands of cases using economies of scale.
We’re here to talk about the Courage Foundation, ready to answer anything, including on the recent spike in bitcoin donations to Edward Snowden’s defense fund since the Obama Administration’s latest Executive Order for sanctions against "hackers" and those who help them. https://edwardsnowden.com/2015/04/06/obama-executive-order-prompts-surge-in-bitcoin-donations-to-the-snowden-defence-fund/
Julian is a founding Trustee of the Courage Foundation (https://couragefound.org) and the publisher of WikiLeaks (https://wikileaks.org/).
Sarah Harrison, Acting Director of the Courage Foundation who led Edward Snowden out of Hong Kong and safe guarded him for four months in Moscow (http://www.vogue.com/11122973/sarah-harrison-edward-snowden-wikileaks-nsa/)
Renata Avila, Courage Advisory Board member, is an internet rights lawyer from Guatemala, who is also on the Creative Commons Board of Directors and a director of the Web Foundation's Web We Want.
Andy Müller-Maguhn, Courage Advisory Board member, is on board of the Wau Holland Foundation, previously the board of ICANN and is a co-founder of the CCC.
Proof: https://twitter.com/couragefound/status/585215129425412096
Proof: https://twitter.com/wikileaks/status/585216213720178688
submitted by Sarah_Harrison to IAmA [link] [comments]

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2.2 Global Market by Company
2.3 Global Market by Type
2.4 Global Market by Application
2.5 Global Market by Forecast
Part 3 Asia-Pacific Market Status and Future Forecast
3.1 Asia-Pacific Market by Region
3.2 Asia-Pacific Market by Type
3.3 Asia-Pacific Market by Application
3.4 Asia-Pacific Market by Forecast
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4.1 China Market Status and Future Forecast
4.2 Southeast Asia Market Status and Future Forecast
4.3 India Market Status and Future Forecast
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6.2 UK Market Status and Future Forecast
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11.1 Middle East & Africa Market by Region
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Part 12 Middle East & Africa Market by Geography
12.1 GCC Market Status and Future Forecast
12.2 North Africa Market Status and Future Forecast
12.3 South Africa Market Status and Future Forecast
Part 13 Key Companies
Part 14 Conclusion
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submitted by rasika071 to u/rasika071 [link] [comments]

FUD Copy Pastas

**Last updated: May 30, 2018: Updated wallet info with release of Trinity.
This 4 part series from the IOTA foundation covers most of the technical FUD centered at IOTA.
https://blog.iota.org/official-iota-foundation-response-to-the-digital-currency-initiative-at-the-mit-media-lab-part-1-72434583a2
Also the official IOTA faq on iota.org answers nearly all of these questions if you want to hear the answers directly.
Purpose of Writing
Since posting FUD is so ridiculously low-effort in comparison to setting the record straight, I felt it necessary to put a log of copy-pastas together to balance the scales so its just as easy to answer the FUD as it was to generate it. So next time you hear someone say "IOTA is centralized", you no longer have to take an hour out of your day and spin your wheels with someone who likely had an agenda to begin with. You just copy-paste away and move on.
It's also worth mentioning IOTA devs are too damn busy working on the protocol and doing their job to answer FUD. So I felt a semblance of responsibility.
Here they are. These answers are too my understanding so if you see something that doesn't look right let me know! They are divided into the following categories so if you are interested in a specific aspect of IOTA you can scroll to that section.
1) WALLET
2) COMMUNITY
3) INVESTING
4) TECHNICAL

WALLET

IOTA was hacked and users funds were stolen!

First, IOTA was not hacked. The term “hacked” is thrown around way too brazingly nowadays and often used to describe events that weren’t hacks to begin with. Its a symptom of this space growing way too fast creating situations of the blind leading the blind and causing hysteria.
What happened:
Many IOTA users trusted a certain 3rd party website to create their seed for their wallets. This website silently sent copies of all the seeds generated to an email address and waited till it felt it had enough funds, then it took everyones money simultaneously. That was the ”hack”.
https://blog.iota.org/the-secret-to-security-is-secrecy-d32b5b7f25ef
The lesson:
The absolute #1 marketed feature of crypto is that you are your own bank. Of everything that is common knowledge about crypto, this is at the top. But being your own bank means you are responsible for the security of your own funds. There is no safety net or centralized system in place that is going to bail you out.
For those that don’t know (and you really should if you’ve invested in anything crypto), your seed is your username-pw-security question-backup email all rolled into one. Would you trust a no-name 3rd party website to produce your username+pw for your bank account? Because thats essentially what users did.
The fix:
Make your seed offline with the generators in the sidebar or use dice. This is outlined in the “how to generate wallet and seed” directly following.
The trinity and carriota wallets will have seed generators within them upon their release.

How to generate wallet and seed

1) Download official trinity wallet here
2) follow the instructions on the app.
3) Do not run any apps in conjunction with the trinity app. Make sure all other apps are completely closed out on your device.

Are you sure a computer can’t just guess my seed?

An IOTA seed is 81 characters long. There are more IOTA seed combinations than atoms in the universe. All the computers in the world combined would take millions billions of years just to find your randomly generated one that’s located somewhere between the 0th and the 2781st combination. The chance for someone to randomly generate the exact same seed as yours is 1 / (2781).
If you can’t fathom the number 27 ^ 81, this video should help:
https://www.youtube.com/watch?v=p8YIdmwcubc

Why is Trinity wallet taking so long!!??

Trinity is out. https://trinity.iota.org/

COMMUNITY

IOTA introduction video to share with family

https://youtu.be/LyC04NrJ3yA

Tangle visualizers

http://tangle.glumb.de/

How to setup a full node

Download Bolero and run! Bolero is an all-in-one full node install package with the latest IOTA IRI and Nelson all under a one-click install!
https://github.com/SemkoDev/bolero.fun/releases
"If you want to help the network then spam the network. If you really want to help the network then create a full node and let others spam you!"

No questions or concerns get upvoted, only downvoted!

That’s just the nature of this business. Everyone in these communities has money at stake and are extremely incentivized to keep only positive news at the top of the front page. There is nothing you're going to do about that on this subreddit or any crypto subreddit. It's just a reddit fact of life we have to deal with. Everyone has a downvote and everyone has an upvote. But what can be done is just simply answer the questions even if they are downvoted to hell. Yea most people wont' see the answers or discussion but that one person will. every little bit counts.
I will say that there are most certainly answers to nearly every FUD topic out there. Every single one. A lot of the posts I'm seeing as of late especially since the price spike are rehashed from months ago. They are often not answered not because there isn't an answeexplanation, but because regulars who have the answers simply don't see them (for the reason listed above). I can see how it's easy for this to be interpreted (especially by new users) as there not being an answer or "the FUDsters are on to something" but thats just not the case.

Developer's candidness (aka dev's are assholes!)

http://www.reddit.com/Iota/comments/7obyyx/serious_talk_about_pr_system_iota_and_david/ds8ouvc
http://www.reddit.com/Iota/comments/7obyyx/serious_talk_about_pr_system_iota_and_david/ds8rega
http://www.reddit.com/Iota/comments/7oi9g8/why_is_everyone_so_critical_of_david_this_has_to/ds9rtbb
https://i.redd.it/qb0ik4tgny401.jpg
Lastly and to no surprise, David conducts himself very professionally in this interview even when asked several tough questions about the coordinator and MIT criticism.

IOTA Devs do not respond appropriately to criticism

When critiquers provide feedback that is ACTUALLY useful to the devs, then sure they'll be glad to hear it. So far not once has an outside dev brought up something that the IOTA devs found useful. Every single time it ends up being something that was already taken into consideration with the design and if the critiquer did an ounce of research they would know that. Thus you often find the IOTA devs dismissing their opinion as FUD and responding with hostility because all their critique is really doing is sending the message to their supporters that they are not supposed to like IOTA anymore.
Nick Johnson was a perfect example of this. The Ethereum community was co-existing [peacefully]with IOTA’s community (as they do with nearly all alt coins) until Nick wrote his infamous article. Then almost overnight Ethereum decided it didn’t like IOTA anymore and we’ve been dealing with that shit since. As of today, add LTC to that list with Charlie’s (even admitting) ignorant judgement of IOTA.
12/17/2017: Add John McAfee (bitcoin cash) and Peter Todd (bitcoin) to the list of public figures who have posted ignorantly on IOTA.

A lot of crypto communities certainly like to hate on IOTA...

IOTA is disrupting the disrupters. It invented a completely new distributed ledger infrastructure (the tangle) that replaces the blockchain and solves all of its fundamental problems (namely fees and scaling). To give you an idea of this significance, 99% of the cryptocurrencies that exist are built on a block chain. These projects have billions of dollars invested into them meaning everyone in their communities are incentivized to see IOTA fail and spread as much FUD about it as possible. This includes well known organizations, public figures, and brands. Everyone commenting in these subreddits and crypto communities have their own personal money at stake and skin in the game. Misinformation campaigns, paid reddit posters, upvote/downvote bots, and corrupt moderators are all very real in this space.

INVESTING

How do I buy IOTA

https://medium.com/@fuo213/how-to-buy-iota-the-complete-guide-for-crypto-dummies-e63560caf921

What is the IOTA foundation?

IOTA foundation is a non-profit established in Germany and recognized by the European Union. Blog post here: https://blog.iota.org/iota-foundation-fb61937c9a7e

How many companies and organizations are interested, partnered or actively using IOTA?

A lot, and often too many to keep up with.
https://reddit.com/Iota/comments/7f3dmx/list_of_known_iota_partnerships_corporate/

How was IOTA distributed?

All IOTAs that will ever exist were sold at the ICO in 2015. There was no % reserved for development. Devs had to buy in with their personal money. Community donated back 5% of all IOTA so the IOTA foundation could be setup.

No inflation schedule? No additional coins? How is this sustainable?

Interestingly enough, IOTA is actually the only crypto that does not run into any problems with a currency cap and deflationaryism. Because there are zero fees, you will always be able to pay for something for exactly what it's worth using IOTA, no matter how small the value. If by chance in the future a single iota grows so large in value that it no longer allows someone to pay for something in fractions of a penny, the foundation would just add decimal points allowing for a tenth or a hundreth or a thousandth of an iota to be transacted with.
To give you some perspective, if a single IOTA equals 1 penny, IOTA would have a 27 trillion dollar market cap (100x that of Bitcoin's today)

IOTA is not for P2P, only for M2M

With the release of the trinity wallet, it's now dead simple for anyone to use IOTA funds for P2P. Try it out.

Companies technically don’t have to use the IOTA token

Yes they do
Worth clarifying that 0 iota data transactions are perfectly fine and are welcomed since they still provide pow for 2 other transactions and help secure the network. In the early stages, these types of transactions will probably be what give us the tps/pow needed to remove the coordinator and allow the network defend 34% attacks organically.
But... if someone does not want to sell or exchange their data for free (0 IOTA transaction), then Dominic is saying that the IOTA token must be used for that or any exchange in value on the network.
This is inherently healthy for the ecosystem since it provides a neutral and non-profit middle ground that all parties/companies can trust. If one company made their own token it wouldn’t be trusted since companies are incentivized by profits and nothing is stopping them from manipulating their token to make them more money. Thus, the IOTA foundation will not partner with anyone who refuses to take this option off the table.

All these companies are going to influence IOTA development!!

These companies have no influence on the development of IOTA. They either choose to use it or they don’t.

Internet of things is cheap and will stay cheap

Internet of things is one application of IOTA and considered by many to be the 4th industrial revolution. Go do some googling. IOTA having zero fees enables M2M for the first time in history. Also, if a crypto can do M2M it sure as shit can do M2P and P2P. M2M is hard mode.

IOTA surpassing speculation

IOTA, through the data marketplace and [qubic](qubic.iota.org), will be the first crypto to surpass speculation and actually be used in the real world for something. From there, it will branch out into other use cases, such as P2P. Or maybe P2P use of IOTA will grow in parallel with M2M, because why not?
https://blog.iota.org/iota-data-marketplace-cb6be463ac7f
12/19/17 update: Bosch reinforces IOTA's break-out from speculation by buying IOTA tokens for its future use in the data marketplace. https://i.redd.it/8e5b8bi9ov401.png
http://www.bosch-presse.de/pressportal/de/en/robert-bosch-venture-capital-makes-first-investment-in-distributed-ledger-technology-137411.html

Investing in a new project barely off the ground

Investing in a project in its early stages was something typically reserved for wealthy individuals/organizations before ICO’s became a thing. With early investing comes much less hand holding and more responsibility on the user to know what they are doing. If you have a hard time accepting this responsibility, don’t invest and wait for the technology to get easier for you. How many people actually knew how to use and mine bitcoin in 2009 before it had all its gui infrastructure?
IOTA is a tangle, the first of its kind. NOT a copy paste blockchain. As a result wallets and applications for IOTA are the first of their kind and translating the tangle into a nice clean user-friendly blockchain experience for the masses is even more taxing.

Why is the price of my coin falling?!

This may be the most asked question on any crypto subreddit but it's also the easiest to explain. The price typically falls when bad things happen to a coin or media fabricates bad news about a coin and a portion of investors take it seriously. The price increases when good things happen to a coin, such as a new exchange listing or a partnership announced etc.. The one piece that is often forgotten but trumps all these effects is something called "market forces".
Market forces is what happens to your coin when another coin gets a big news hit or a group of other coins get big news hits together. For example, when IOTA data marketplace released, IOTA hit a x5 bull run in a single week. But did you notice all the other alt coins in the red? There are a LOT of traders that are looking at the space as a whole and looking to get in on ANY bull action and will sell their other coins to do so. This effect can also be compounded over a long period of time such as what we witnessed when the bitcoin fork FOMO was going on and alt coins were squeezed continuously to feed it for weeks/months.
These examples really just scratch the surface of market forces but the big takeaway is that your coin or any coin will most certainly fall (or rise) in price at the result of what other coins are doing, with the most well known example being bitcoin’s correlation to every coin on the market. If you don't want to play the market-force game or don't have time for it, then you can never go wrong buying and holding.
It's also important to note that there are layers of investors. There's a top layer of light-stepping investors that are a mixture of day traders and gamblers trying to jump in and jump out to make quick money then look for the next buying (or shorting) opportunity at another coin. There's a middle layer of buyers and holders who did their research, believe in the tech and placing their bets it will win out in the long run. And the bottom layer are the founders and devs that are in it till the bitter end and there to see the vision realized. When a coin goes on a bull run, always expect that any day the top layer is going to pack up and leave to the next coin. But the long game is all about that middle layer. That is the layer that will be giving the bear markets their price-drop resistance. That is why the meme "HODL" is so effective because it very elegantly simplifies this whole concept for the common joe and makes them a part of that middle layer regardless if they understand whats going on or not.

TECHNICAL

How is IOTA free and how does it scale

IOTA is an altruistic system. Proof of work is done in IOTA just like bitcoin. Only a user’s device/phone must do pow for 2 other transactions before issuing one of its own. Therefore no miners and no fees. And the network becomes faster the more transactions are posted. Because of this, spamming the network is encouraged since they provide pow for 2 other transactions and speed up the network.

IOTA is centralized

IOTA is more decentralized than any blockchain crypto that relies on 5 pools of miners, all largely based in China. Furthermore, the coordinator is not a server in the dev’s basement that secretly processes all the transactions. It’s several nodes all around the globe that add milestone transactions to show the direction of the IF’s tangle within the DAG so people don’t accidentally follow a fork from a malicious actor. Anyone with the know-how can fork the tangle right now with a double-spend. But no one would follow their fork because the coordinator reveals which tangle is the legit IF one. If the coordinator wasn’t there (assuming low honest-transaction volume), there would be no way to discern which path to follow especially after the tangle diverges into forks of forks. Once throughout of honest transactions is significant enough, the “honest tangle” will replace the coordinated one and people will know which one to follow simply because it’s the biggest one in the room.
Referencing the coordinator is also optional.
Also, if you research and understand how IOTA intends to work without the coordinator, it’s easier to accept it for now as training wheels. I suggest reading pg 15 and on of the white paper analyzing in great depth how the network will defend different attack scenarios without a coordinator. For the past several months, IOTA foundation has been using St Petersburg college’s super computer to stress test IOTA and learn when they can turn the coordinator off. There will likely be a blog about the results soon.
This is another great read covering double spends on IOTA without a coordinator: www.tangleblog.com/2017/07/10/is-double-spending-possible-with-iota/
This too: http://www.reddit.com/Iota/comments/7eix4a/any_iota_guru_that_can_explain_what_this_guy_is/dq5ijrm
Also this correspondence with Vitalik and Come_from_Beyond https://twitter.com/DavidSonstebo/status/932510087301779456
At the end of the day, outstanding claims require outstanding evidence and folks approaching IOTA with a “I’ll believe it when I see it” attitude is completely understandable. It’s all about your risk tolerance.

Can IOTA defend double spend attacks?

99% of these “but did they think about double spend attacks?” type questions could just be answered if people went and did their own research. Yes of course they thought about that. That’s like crypto101…
www.tangleblog.com/2017/07/10/is-double-spending-possible-with-iota/

Will IOTA have smart contracts?

Yes - qubic.iota.org

Trinary vs binary?

"By using a ternary number system, the amount of devices and cycles can be reduced significantly. In contrast to two-state devices, multistate devices provide better radix economy with the option for further scaling"
https://www.nature.com/articles/srep36652
https://www.reddit.com/CryptoCurrency/comments/6jgbvb/iota_isnt_it_the_perfect_cryptocurrency/dje8os2/

Bitcoin with lightning network will make IOTA obsolete.

If you want lightning network, IOTA already released it. Called flash channels.
https://blog.iota.org/instant-feeless-flash-channels-88572d9a4385

IOTA rolled its own crypto!

https://blog.iota.org/official-iota-foundation-response-to-the-digital-currency-initiative-at-the-mit-media-lab-part-1-72434583a2
This is why: https://blog.iota.org/the-transparency-compendium-26aa5bb8e260
Cybercrypt has been hired to review and audit it. IOTA is currently running SHA-3/KECCAK now until Curl is ready.

MIT said bad things about IOTA

https://blog.iota.org/official-iota-foundation-response-to-the-digital-currency-initiative-at-the-mit-media-lab-part-1-72434583a2
And for official formal closure that MIT was completely wrong:
https://www.reddit.com/CryptoCurrency/comments/7svr8mit_media_lab_dci_allegations_proven_wrong_iotas/
https://blog.iota.org/curl-disclosure-beyond-the-headline-1814048d08ef
https://medium.com/@comefrombeyond/cfbs-comments-on-https-www-media-mit-edu-posts-iota-response-5834c7f8172d

Nick Johnson says IOTA is bad!

Nick Johnson is an ethereum dev who is incentivized to see IOTA fail, see CFBs twitter responses here.
https://mobile.twitter.com/nicksdjohnson/status/912676954184323073?lang=en
And this
https://t.co/1HgfPhg2lP
And this
https://www.reddit.com/Iota/comments/72lly0/comment/dnjk9f5?st=JB2VKUBB&amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;sh=a2892548
And this
https://blog.iota.org/official-iota-foundation-response-to-the-digital-currency-initiative-at-the-mit-media-lab-part-1-72434583a2

IOTA is not private!

Masked authenticated messages exist right now so data can be transferred privately. Very important for businesses.

Coin privacy

Centralized coin mixer is out that foundation runs. Logs are kept so they can collect data and improve it Folks can copy the coin mixer code and run it themselves. Goal is for mixer to be decentralized and ran by any node.

How do nodes scale? How on earth can all that data be stored?

Full nodes store, update and verify from the last snapshot, which happens roughly every month. Its on the roadmap to make snapshotting automatic and up to each full node’s discretion.With automatic snapshots, each full node will act as a partial perma-node and choose when to snapshot its tangle data. If someone wants to keep their tangle data for several months or even years, they could just choose not to snapshot. Or if they are limited on hard drive space, they could snapshot every week.
Perma-nodes would store the entire history of the tangle from the genesis. These are optional and would likely only be created by companies who wish to sell historical access of the tangle as a service or companies who heavily use the tangle for their own data and want to have quick, convenient access to their data’s history.
Swarm nodes are also in development which will ease the burden on full nodes. https://blog.iota.org/iota-development-roadmap-74741f37ed01

Node discovery is manual? Wtf?

Nelson is fixing has fixed this:
https://medium.com/deviota/carriota-nelson-automatic-peer-discovery-for-iota-bdca9b8b8750
https://medium.com/deviota/carriota-nelson-in-a-nutshell-1ee5317d8f19
https://github.com/SemkoDev/nelson.cli

IOTA open source?

https://blog.iota.org/official-iota-foundation-response-to-the-digital-currency-initiative-at-the-mit-media-lab-part-1-72434583a2
IOTA protocol is open source. The coordinator is closed source open source.
https://imgur.com/a/xWQUp

Foundation moved user's funds?

https://blog.iota.org/official-iota-foundation-response-to-the-digital-currency-initiative-at-the-mit-media-lab-part-1-72434583a2
https://blog.iota.org/claims-and-reclaims-finalization-e692844c505a
https://www.reddit.com/Iota/comments/7mmimu/claims_and_reclaims_is_processing/drv63d5/

My IOTA donation address:

9PZFQNPLVDUNGAOYYMMXFWMGNPMNAJWZKTYOOMCYQTZQA9RPVVN9SE9KGOL9HWZFJBXKQGEOY9JJYDXB9TY9FLQPXB
submitted by mufinz2 to Iota [link] [comments]

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