Trade on multiple exchanges from a single platform and avoid the hassle of multiple logins, different interfaces, constant tab changing and overall keeping track of balance holdings and trades.submitted by altXpert to u/altXpert [link] [comments]
With more than 300 cryptocurrency exchanges today, most traders have to manage multiple exchange accounts.
The need for more than one account usually rises because of the variety of offered crypto currency pairs, market liquidity, having to diversify the risk of being hacked, as well as the different trading tools and terms each exchange offers.
Trading and keeping track of your portfolios on multiple exchanges is time consuming, inefficient and frustrating. Having to log on different platforms, use different interfaces, keeping track of multiple portfolios and all trading related activities become increasingly difficult with each new account.
It would be simple and easy if you could connect all those exchange accounts into a single multi-exchange platform which combines all the data in real time and provides a single interface to control all remote exchange accounts.
Multi-exchange platformsA multi-exchange platform allows the traders to connect all their exchange accounts into a single account through the user of API keys generated from the account of each exchange.
Once all accounts are connected into a single one, using the exchanges interfaces becomes obsolete. The unified account will now track and combine all portfolios and traders will be able to track prices, order statuses and other data across all exchange accounts from a single interface.
In addition, most multi-exchange platforms provide various information tools such as news aggregators, sentiment tools, arbitrage matrix and price alerts.
With regards to API keys security, these platforms do not require withdrawal or deposit permissions which limits the possibility of fraud and loss of funds.
Finally, multi-exchange platforms do not typically charge additional trading fees and do not require lengthy verification procedures.
The current top platformsCurrently there are a handful of multi-exchange platforms with a variety of services. They range from a simple crypto portfolio tracker to an advanced trading and portfolio management platform. A detailed list of all major multi-exchange platforms and their features can be found here: www.AltXpert.com
Here is an overview of the top 9 multi-exchange trading and portfolio management platforms:
CryptoView is a multi-exchange trading and portfolio management platform equipped with a handful of useful integrations such as various cryptocurrency trading tools, portfolio analytics, a multi-source news aggregator, crypto events calendar and an outstanding multi-charting interface allowing endless customizations. It is an all-in-one solution for traders, crypto enthusiasts and professional fund managers.
CryptoView is a fully functional trading platform allowing you to trade on all major cryptocurrency exchanges from a single secured interface.
Bitsgap is an аll-in-one crypto trading platform designed to cover cross platform API trading and portfolio management with connection with most popular crypto exchanges and wallets. This multi-exchange cryptocurrency platform offers in addition to the full specter of trading tools the opportunity to use arbitrage trading on main and altcoins.
Integrated charts are powered by TradingView with all the provided drawing tools and technical indicators. Through API connection users can track and manage their entire portfolio at once.
Coinigy is a web based multi-exchange API trading platform combining full scope of trading features such as: advanced trade orders, price alerts, market data overview, crypto news and integrated charts from TradingView. The platform offers connection to more than 25 crypto exchanges and wallets covering most of the main and altcoins.
Single portfolio management is one of the main features of this multi-exchange cryptocurrency platform. Portfolio management across multiple exchanges and wallets can be performed from one unified account.
Quadency gives the opportunity to trade and manage an entire portfolio across multiple exchanges and trading platforms. By connecting API keys on existing accounts in exchanges and wallets, the users can execute advanced trading orders from one interface. All features combined in this solution makes it an all-in-one crypto trading platform for main and altcoins.
Cryptohopperis a multi-exchange trading and automated trading bot platform for cryptocurrencies. It allows its users to automate trading strategies that will trade cryptocurrencies like Bitcoin, Ethereum, Ripple and any other that supported exchanges offers.
Cryptohopperis designed to make traders more efficient by allowing them to copy other traders, automatically analyze the markets, manage all exchange accounts from one place and even use advanced tools like backtesting, market-making, and arbitrage.
LCX Terminal brings together real-time and full historical data of all major cryptocurrencies and trading pairs, smart automated and manual trading across all platforms, breaking news desk, social trading signals, powerful analytics and portfolio reporting — all combined in one platform. LCX Terminal cryptocurrency trading software is made for everyday traders as well as professional and institutional investors.
HyperLinq™ brings institutional-grade software with superior technology for digital assets and cryptocurrencies traders. Allows the users to track crypto assets on any major exchange or wallet through API connection. A simplified portfolio manager for cryptocurrencies and digital assets.
Altrady is a comprehensive cryptocurrency trading platform. The platform provides full trading information such as price chart, order book, trade history, and depth chart.
It also offers immediate price alerts, portfolio manager, break-even calculator, and customizable trading pages by allowing traders to manipulate widgets to create preferred layout in order to trade comfortably, limit ladder order, gain quick access to market tabs, and integrated market scanners.
Auroxis a trading terminal that enables traders to supercharge their returns. With its multi-exchange integrated workspaces, Aurox provides a better platform for portfolio management, leads to faster trades and higher results for cryptocurrency investors.
|Rate (per day)||2.74||491.84|
Generated with BBoe's Subreddit Stats
submitted by UMITop to u/UMITop [link] [comments]
Cryptocurrencies are ill suited to money laundering
As a tool for money laundering, cryptocurrencies are a lot less universal and convenient than bank payments and cash.
Unlike cash transactions and bank transfers, transactions in decentralized blockchains are easily traceable. Cryptocurrencies are transparent in nature — all transactions are recorded and publicly accessible. If you can accumulate considerable volume of data, you can determine who's behind a bitcoin address used for money laundering. Besides, you cannot use the ВТС network and other cryptocurrency networks to transfer a large amount of money — such a transaction would be immediately brought to attention of law enforcement.
The experience of fighting against the Darknet (the illegal Internet) shows that states can fight against cyber crime while anonymity of cryptocurrencies is greatly exaggerated. Legal cryptocurrency platforms have demonstrated a long-standing trend of using KYC principles (provision of complete information about a user) — exchanging currencies anonymously is getting harder. Special services can connect transactions to specific users, sometimes using the blockchain technology itself to do it.
Super anonymous coins that encrypt transaction data (Monero, Dash, ZCash and others) cannot save criminals either — there are methods that can be used to break down these transactions. However, some experts state that cryptocurrency technologies evolve really fast and will soon become completely untraceable. In any case, to withdraw cryptocurrencies and turn them into fiat money, you would have to “burn” your actual bank accounts, thus reducing the entire anonymity level.
It is often mentioned that criminals use the so-called “mixers” — software and services where transactions can be run by mixing your coins and coins owned by other users to maintain confidentiality. It allows you to hide your withdrawal data and addresses, as well as your real identities. However, according to the above mentioned Chainalysis report, most users prefer to use mixers to ensure confidentiality and not to conduct illegal activity. This method is only used to launder 8 % of all money passing through.
Moreover, special services can track transactions passing through mixers which makes them suspicious by default. This is why criminals are not overenthusiastic to use them — cash and banks are more secure.
As you can see, cryptocurrencies are not all that convenient for criminals though it may seem so. They are an excessive intermediate since actual laundering requires cashing out and it's getting harder to do so anonymously by the day.
Banks are the key “laundromats” of the criminal underworld
Let's turn to the best part now. Criminals launder most money via regulated banks seen as ideal by the states. They can annually launder up to $ 2 trln. Think about it: trillions of dollars laundered through the banks.
Many of the world's biggest banks have been involved in money laundering schemes and fined for this. For instance, Wells Fargo, J. P. Morgan Chase & Co and the Bank of America, Standard Chartered and others. Last year, it turned out that Citigroup, Deutsche Bank and Raiffeisen had helped criminals launder $ 8.8 bln over a period of 7 years. It's only three bank conglomerates seen as strongholds of honesty and security. Imagine how much money has been laundered via other banks, including “shadow” banks.
In 2019, various companies around the world were fined for being involved in money laundering schemes worth of the record $ 8.14 bln. It's twice as much as in 2018. Two thirds of the fines were attributed to banks — $ 6.2 bln, and 17% — to gaming and gambling organizations. The best joke is that these fines are a drop in the ocean for the banks while money laundering cannot be undone.
According to the August report by the Mexican Finance Intelligence Unit, local criminals still prefer to launder money using conventional financial institutions, mostly banks, as well as brokerage firms and exchange companies. Seven biggest and most regulated Mexican banks that control 80 % of all assets in the national financial sector run the biggest number of transactions with black money (no specific amounts are given).
Moreover, Mexican banks have long been known to deal with activities of this kind. In 2012, one of them — HSBC — paid a record $ 1.92 bln in fines to the US authorities after the Mexican and Columbian drug cartels were caught using this bank for laundering drug-related money.
A short time ago, the international payment system SWIFT used by all of the world's banks published a report drafted in partnership with the financial research firm Bae Systems. The report noted that cryptocurrencies are rarely used for money laundering — with criminals preferring the more conventional ways. These include: using the so-called “money mules” — intermediaries who allow to use their accounts for transferring illegal money; hacking bank accounts, bribing bank officials, using shell companies and casinos.
The report also lists examples of laundering big amounts of money using cryptocurrencies while also noting that only few cases have been registered. These include use of intermediaries, prepaid crypto cards, purchase of physical assets, such as real estate or expensive cards, for cryptocurrency.
Cryptocurrencies do not launder money — they fight against money laundering
As you can see, while cryptocurrencies can be used for money laundering, they are ill suited to this purpose. Moreover, they actually work the other way around by increasing transparency, security and speed of payment transactions and giving users more independence. Coins like UMI are building an alternative financial system accessible to anyone, not a shadow market for laundering illegal money.
The fact is that today 99 % of laundered money passes through other channels, not cryptocurrencies. Criminals still prefer using fiat money for this purpose. Banking institution are their key accomplices, and the amounts of money they hide outmatches the overall capitalization of the cryptocurrency market. However, no one is threatening to prohibit banks.
At the same time, we hear all the time that cryptocurrencies should be banned or strictly regulated. Unfortunately, financial regulators and law enforcement agencies all over the world are sometimes obsessed with the idea of putting spokes in wheels for the usual people who use cryptocurrencies while also allowing bankers to launder trillions of dollars. Isn't it ironic?
UMI is fighting against this state of affairs. We're building a new, alternative and completely transparent financial system where any person on the globe can generate digital money and make instant, fast and free-of-charge payments.
To sum up, don't trust the negative publicity for cryptocurrencies Trust the facts. The negative publicity is mostly generated by people who are not happy that the existing financial system based on banks is gradually become a thing of the past while cryptocurrencies are growing rapidly. At any rate, the key point is that decentralized cryptocurrencies which belong to users from across the world cannot be banned, even from the technical point of view. Thus, there's nothing to fear and progress cannot be stopped.
Sincerely yours, UMI Team!
MintDice is proud to bring you the fourth part of the CryptoSmarts series, a 100% unbiased/non-affiliate paid article set that will focus on relatively simple ways you can boost your privacy, take power away from overbearing governments and corporations while also doing relative good for society all at the same time with minimal effort. Rest assured that anything suggested here is solely for your own benefit.submitted by MintDiceOfficial to MintDice [link] [comments]
In this article, we'll take a deep dive into password managers, which applications to go for, how to optimize your password managers and which ones to avoid. It's of increasing importance for all users to adopt a password manager because commonly used passwords and repeated use of log-in + password combinations are the two weakest points in any normal individual's security online. Meanwhile, memorizing dozens of unique and complex passwords is beyond the scope of what most people can do, especially long term. Thus password managers have been created as a way to store multiple passwords into a single file that can help ensure your security and privacy online.
For a little encouragement, we'll share the now extremely famous dialogue between Edward Snowden and John Oliver talking about passwords. As should be painfully obvious by now, password managers are one of the best solutions to this entire dilemma.
PASSWORD MANAGER BASICSWe should first note that not all password managers are created the same as we've noted with software across all of our other articles. By and large, we'll be looking for similar characteristics in our password managers as we would our other software which includes open sourced software protocols and best software security practices. And when it comes to Bitcoin, cryptocurrency and your entire life's work on the internet, there is a lot at stake here. I'd argue that it is more important for password managers than for any other application to make sure to get this one correct since it will have your entire livelihood on the line.
The very amazing thing with demanding open sourced software for your password manager is that it by definition will also be free at the most basic level. This is because if it weren't, all it would take would be someone to fork over a program to make it free. So you are in a sense getting the best of both worlds here; a free software that is also of the highest quality. Meanwhile, ironically, many of the more commonly known password managers like Dashlane or Lastpass use closed source software and often charge fees to use their service. Funnily enough, Lastpass, the password manager itself, was actually formerly hacked in the past. One could argue this at least in part had to do with it's closed source software since having open sourced software at least in part makes software more secure. In short, do not used these closed source services that are frequently advertised for on the web as they are detrimental to you in more ways than one.
RECOMMENDED BEST PASSWORD MANAGERSBitwarden is our first recommendation. Bitwarden is truly one of the all time greats by approaching password management on the individual, team and even enterprise level to create a one size fits all solution. Bitwarden is compatible on virtually all devices out there from all desktops to mobile devices and so forth. Additionally, while they offer a centralized cloud service for free, Bitwarden is also set up to allow you to run your own private server to keep your own key base entirely under your own control, fully encrypted.
Next up we have KeePassXC which is a fork of one of the longest standing password managers in existence, formerly known as KeePass that halted a lot of it's ongoing development some time ago. KeePassXC was created as a locally held password manager application that could work across platforms. Unlike Bitwarden where your key file is held in cloud storage, KeePassXC is simply a program client and a local file that you must maintain and backup yourself. This has some pros and cons. The good news is that you have full control of everything related to KeePassXC as the program under most situations will not be talking to any online server which could expose private or sensitive information. The bad news is that if you ever were to lose control of your key file, you are completely out of luck. For this reason, it's imperative to back up your encrypted key file in multiple locations to protect against what would be catastrophic loss. You can do this with USB drives, e-mail accounts, cloud storage, safe deposit boxes or a whole host of other creative solutions that you might come up with.
The final recommended option is LessPass. LessPass is very interesting technology because it is a no-knowledge password manager. By inputting a few pieces of information which could be a master password in conjunction with an e-mail address or user name, a password is automatically attached to any URL address. It will simply cross all of these pieces of information via PBKDF2 and SHA-256 to produce random yet consistent outputs for any of your web browsing. The advantage of this program is that it is extremely light weight, and so long as you can remember your e-mail address, account name and master password, you can now gain full access to everything around the internet without the need of any files. The downside is some level of control over password flexibility since the passwords are automatically generated for you.
In summation of these three options, BitWarden is the best overall password manager for most people's use cases. Meanwhile, LessPass is probably best suited for the most casual user who contains fewer accounts across the internet and wants something extremely simple and easy to use. Lastly, KeePassXC, will be the ultimate in privacy password manager technology and is best suited for those that are prepared to take the extra steps to ensure their key file is kept up to date as the months and years tick by.
BEST PRACTICES WITH YOUR NEW PASSWORD MANAGEROnce you have chosen a password manager from the above list, it will be important to change all of your account passwords one by one to incorporate it into your new system. This will help you get away from your commonly used log-in and password combinations and over to your new, more secure and robust set up. With your new set up, if you have a key file to back up, you must now start getting in the habit of doing so, especially after major or important changes to your password manager. Or if you wish to use BItWarden with a private cloud server, make sure that that is fully set up and running.
Generally speaking, when choosing password length from your password manager for standard and robust security, 25 random characters, letters (and symbols if you wish, but they aren't necessary), is mostly considered to be uncrackable. This is because while every password is in theory beatable, it takes dramatically more computational energy over time to figure out what your password is, and at some point, it becomes unreasonable. That said, NSA grade security often holds itself up to 50 random characters which is considered to be unbreakable even on a government wide scale.
On that same token, you'll have to use a master password for your password manager. Given that you only need to know one password, it will now be extremely important to make this a very good password. Because a password that you need to remember most likely won't (or perhaps shouldn't) be completely random so that it's easy to remember, it should, at the very least, be long. I would suggest making sure that you come up with a master password that is at least 40 characters long or 125 bits of information. To check out how many bits of entropy your master password is, you can type it into the password field of KeePassXC and it will tell you roughly how secure your master password is. While 40 characters may seem like a lot, do keep in mind that this is now the only gateway between yourself and all of your access keys to all of your accounts held on this account.
Bits of Entropy Example on KeePassXC
Finally, it is worth investing in a YubiKey or similar 2-FA device if you can get one. This can apply to BitWarden and KeePassXC. With the normal password managers, a hacker will need access to not only your password but also your key file in order to have free reign over all of your accounts. However, a sophisticated hacker that has full access to your device with a keylogger could ultimately, in theory, compromise your full set up, and this would be disastrous for you. Fortunately, this can be resolved by buying and activating a Yubikey or other such device. The Yubikey example requires that a Yubikey, with a private key that you set up for your password manager, is present to access your database. Therefore, even if a hacker were to obtain your key file and your master password, they still won't be able gain access to your account. As a precaution, however, if you lose access to your Yubikey and/or private key, you too, will be locked out. Therefore, it is important to keep your Yubikey backed up and to keep extra copies available.
IN CONCLUSIONOwning Bitcoin or other cryptocurrencies comes with a lot of responsibility if you want to minimize risk. As does maintaining a strong hack-resistant presence online. One of the best defenses you can make is by implementing a password manager. Similar to the previous CryptoSmarts articles that we have written prior, it will take some small amount of set up work to get fully acclimated to your new system, but you'll thank yourself down the road that you have done this. And the sooner you start, the better, as things will only continue to get more complex, with more risk factors at play as the internet plays an ever increasing role in all of our day to day lives.
Finally, while the article is current as of the writing of the article, it will undoubtedly lose merit over time. Be sure to check if everything in this article is up to date or that any password manager that you select from this article continues development or continues to abide by the proper best practice principles.
If you enjoyed this article, we would encourage you to check out our other previous CryptoSmarts articles discussing private e-mails, secure messenger applications and proper web browsers.
https://preview.redd.it/b80c05tnb9e51.jpg?width=2550&format=pjpg&auto=webp&s=850282c1a3962466ed44f73886dae1c8872d0f31submitted by hkalodner to ethereum [link] [comments]
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])
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.
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:
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:
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:
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.
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 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 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.
https://preview.redd.it/vrq329h41vs51.png?width=1000&format=png&auto=webp&s=a9cdd74e5bfd8c7ca678fcb6663d37d87bc9f7b2submitted by benebit to CryptocurrencyICO [link] [comments]
With the dramatic increase in the number of traders and investors in Canada that are using PrimeXBT, one question has been asked recently more than others which is whether PrimeXBT is safe for Canadian traders.
The number of Canadian users at PrimeXBT has been growing rapidly throughout 2020 as a sign that the tools and features on the platform are opening up new opportunities for interacting in the market in more optimal ways.
This guide covers whether or not PrimeXBT is safe for Canadian traders, and looks at some of the features and tools of the platform.
The Canadian Market in 2020
Like much of the rest of the world, the Canadian market has seen some of the highest levels of all volatility in 2020 that have been seen in many years, or even at all throughout the history of cryptocurrency.
The Canadian market has seen renewed growth following the contractions throughout 2018 and much of 2019 when the global bear market in the cryptocurrency space drove many retail investors back out of the market after the exponential growth of 2017.
This has led many Canadian traders to wonder whether we are on the brink of another major bull run as was seen both in 2017 as well as 2013, and that would potentially see the price of Bitcoin driven up to the range of $50,000 or more.
The Exponential Growth of PrimeXBT
With the backdrop of the excitement within the global cryptocurrency market in general, and the Canadian cryptocurrency market more specifically, PrimeXBT has been perfectly positioned for exponential growth since its launch in early 2018.
The platform initially launched at the start of 2018 with a waiting list of more than 150,000 traders, and this showed the interest in the platform that was present even before it came onto the market.
As a result of the unique tools and features provided by PrimeXBT, it has grown exponentially over the past few years to become the world’s leading multi-asset margin trading platform and today managing up to $2 billion worth of global trade every day.
What is PrimeXBT?
PrimeXBT is a margin trading-centric platform that provides high leverage trading on a wide range of cryptoassets as well as many of the world’s leading traditional assets.
Traders at PrimeXBT are able to access up to 100X leverage on a wide range of cryptoassets that include BTC, ETH, XRP, LTC, and EOS.
This is whilst also being able to access up to 500X leverage on a range of traditional assets like stock indices such as the S&P500 and FTSE100, forex pairs such as USD/EUR and AUD/CAD, and commodities such as gold and oil.
PrimeXBT: Security Features
From a security perspective, PrimeXBT is one of the leading trading platforms in the crypto market, and has built a strong reputation for being a safe and reliable platform to trade on.
Much of this is as a result of the bank-grade security features that are implemented throughout PrimeXBT that include mandatory Bitcoin address whitelisting and hardware security modules with rating of FIPS PUB 140-2 Level 3 or higher.
By working to add advanced security solutions throughout its platform, PrimeXBT has shown a strong commitment to protecting the funds and data of its users.
PrimeXBT: Security Track Record
While there are many other platforms in the cryptocurrency space that have suffered devastating hacks over the past 2 or 3 years, PrimeXBT is one of a small number of top tier platforms that have remained hack-free throughout this period.
A good example of this is the Binance hack in 2019 that saw the platform lose more than $40 million of its users’ funds, and more recently the KuCoin hack where more than $150 million was lost by that platform.
In contrast, PrimeXBT has never been hacked and has never been breached by hackers and as such remains as one of the most trusted platforms in the market, having a clean security track record.
PrimeXBT: Excellent Customer Support
In 2019, a study of the top 5 crypto margin trading platforms found that PrimeXBT has the best customer service of all 5, and also was the only platform out of the 5 to have full marks for all for metrics.
These metrics were politeness, responsiveness, helpfulness, and the range of different communication channels that were available to users.
By having an excellent customer support structure, PrimeXBT has ensured that its users are able to get fast and easy solutions to the problems and that there is always a direct line of communication open with the admin at the platform to be able to effectively deal with any issues that arise.
Other Advantages of Using PrimeXBT
PrimeXBT also provides a number of other advantages that are unique to the platform including providing the lowest fee schedule of any major cryptocurrency trading platform in the market with a low flat rate of 0.05% applied to all trades, irrespective of the size of a trade or the asset being traded.
As well as this, PrimeXBT’s users can enjoy a robust trading engine that is built into the core of the PrimeXBT platform and that can execute up to 12,000 trades per second with an average trade time of less than 7.02 ms.
PrimeXBT also has a unique 4-tier referral program where the traders can generate revenue streams from direct referrals, as well as indirect referrals up to 4 levels deep, with this dramatically increasing the profitability of affiliate activities, and netting the top 3 affiliates on the platform more than $1 million in 2019.
PrimeXBT is a safe and well-reputed trading platform for Canadian traders and this is the reason for its exponential growth of users and volume within Canada over the past months.
As well as being a safe platform to trade at, PrimeXBT also provides a range of unique tools and features to use in order to maximize profitability in the cryptocurrency and traditional asset markets.
To understand more about the security features on PrimeXBT that have protected its users, check out PrimeXBT’s Security page.
WELCOME TO BITCOIN GENERATOR TOOL. The Bitcoin Generator system uses peer-to-peer technology to work without central authority or banks. Transaction management and output from Bitcoin are shared across the network. Bitcoin is open source; The design is public, nobody owns or controls Bitcoin and everyone can be part of this trend. With many of its unique features, Bitcoin offers interesting ... Bitcoin Generator Free Bitcoin Generator Tool Online 2017. We are currently getting too much traffic! You are just able to use this generator for the next 14:44 minutes! ClaimBitcoin is the Bitcoin generator that everyone has been waiting for. Currently it is the only working Bitcoin generator out there, and at the moment it can generate anywhere from 0.001 to 0.009 Bitcoins per day ... Hacker Bitcoin with Bitcoin Generator 2019 Tool is working 100% bitcoin hack tool Bitcoin Generator 2019 is working 100%, earn bitcoins wit... Read more » 5:06 PM. Unknown 1. Email This BlogThis! Share to Twitter Share to Facebook. 5:06 PM. Bistler Hack Bote v9.5 Make up 2 BTC Every Day Bistler Hack Bote v9.5 Make up 2 BTC Every Day. Welcome To Download Bistler Hack Bote v9.5 Make up 2 BTC ... With this free Bitcoin Generator you can generate as many free BTC as you want. The site isn't limited to users. And the BTC Hack System is suitable both for people who are newbies and the ones who are in the business longer. It's the simplest tool you can find in the whole Internet. We don't need your money for our services. You don't need to ... It’s an Official Free BTC Generator, and in this tool, you have to enter some necessary details of your bitcoin wallet. As we told you at the beginning of this article, you must have to need a Bitcoin Wallet. If you don’t, have to create it now by visiting google and read the instruction very carefully. Because there are so many websites doing scam so beware from it. Generate Now ...
[index]          
Desperate enough to get large amounts of bitcoins, then you are on the right place! Buy this software now! There are no limits on using it. Just do not be gr... Free Bitcoin Generator tool 18 JUST FOR FUN. Loading... Unsubscribe from JUST FOR FUN? ... Bitcoin Hack 1,662 views. 15:16. Copy & Paste Videos and Earn $100 to $300 Per Day - FULL TUTORIAL (Make ... hello friends today we learn about blockchain mining /bitcoin . in this video we are reviewing a best tool to hack btc ! DISCLAIMER :we are not responsible for any crime and illegal activity Bitcoin Hack Tool Generator!Trusted bitcoin miner! Is this tool free? Yes. Try it for yourself. - Duration: 10:01. tonny reget 595 views. 10:01 ... Free bitcoin generator - Free BTC . LINK IN COMMENTS!! free bitcoin generator Hey today I'll teach you how to get free bitcoins instantly! Just follow ...