Uniswap V2 and Uniswap V3 are both in use. It is built on the concept of Liquidity pools, automated market makers, or, to be precise, a constant product market maker. First, it uses ETH to buy UniFi via Uniswap's ETH-UniFi pool. For fellow builders out there, let us share more details on these unstated assumptions on the Uniswap V2 Router contract that allows MEV bots to take an unfair advantage as well as the mitigations you can do if you are in a similar situation. Etherscan is a Block Explorer and Analytics Platform for Ethereum, a decentralized smart contracts platform. Filtered by Token Holder (Impermax: Router . Create the contract and deploy it to the blockchain then pass it the required parameters and it will perform a token swap. To swap tokens on Uniswap using a smart contract copy the code below. * UniswapV2Library.sol -> UniswapV2Periphery.sol, and make the library a real library * Call the library directly wherever possible * Remove periphery inheritance and just use the V2 library * Remove duplicate library * Remove some unnecessary lines from periphery * Drop the periphery contract and interface * Address comments Where address = [WETH address, MEME token address], sender = unlocked account, uniRouter is the json abstraction of the router contract. 如果您使用 以太坊网络，可以使用Etherscan区块浏览器中的gas查询工具查看gas . Find out the most actively traded coin on Uniswap (v2). 60% of the UNI genesis supply is allocated to Uniswap community members, a quarter of which (15% of total supply) has already been distributed to past users. Uniswap V2: Router 2 (3.88 Eth) 1.15% (123.04 Eth) 2.04%: 12: Centre: USD Coin (3.49 Eth) 1.11% (79.57 Eth) 1.67%: 13: 1inch v4: Router (3.85 Eth) 1.00% (82.33 Eth) . The Address 0x905b3da313b3070e04a037ac7e2cad28468b375f page allows users to view transactions, balances, token holdings and transfers of ERC-20, ERC-721 and ERC-1155 . It was built from commit 8160750. Given an output asset amount and an array of token addresses, calculates all preceding minimum input token amounts by calling getReserves for each pair of token addresses in the path in turn, and using these to call . -. . Removing this requirement cuts the transaction count in half and saves on gas fees. Peripheral smart contracts for interacting with Uniswap V2 - GitHub - Uniswap/v2-periphery: Peripheral smart contracts for interacting with Uniswap V2. The Address 0x88e0a61798a3ced52f7654a5d79a90737f346631 page allows users to view transactions, balances, token holdings and transfers of both ERC-20 and ERC-721 (NFT . Create swap contract. About Us; Contact Us; Because its API is a bit easier to follow than Uniswap V3's API. What is Uniswap Protocol? PROTOCOL. UNI, the Uniswap Protocol token, is live! This article explains the GRO/rAAVE exploit that happened on February 08, 2021 at 06:17PM UTC in one of the rAAVE staking pools (stkGRO/rAAVE).. A. Given an input asset amount and an array of token addresses, calculates all subsequent maximum output token amounts by calling getReserves for each pair of token addresses in the path in turn, and using these to call getAmountOut. For any sale of these tokens the UI is reporting: The transaction cannot succeed due to error: UniswapV2: K. This is probably an issue with one of the tokens you are swapping. Uniswap protocol is deployed as the set of smart contracts and is entirely decentralized, permissionless, and is censorship-resistant. An attacker created a Fake ERC-20 token named rAXZZ and an associated with it an Uniswap V2 Liquidity Pool paired it with GRO (GRO/rAXZZ).. 1. 最近在研究uniswap v2版本逻辑和代码，接下来我们以一篇uniswap v2版本的部署，开启uniswap的学习之路。 部署步骤如下： 1、准备合约. Trying to swap a shitcoin on uniswap v2 and keep getting no response when clicking confirm swap. Uniswap describes itself as a simple smart contract interface for swapping ERC20 tokens. The token tracker page also shows the analytics and historical data. Where X and Y represent the respective reserve balances of two ERC-20 tokens, and "K" represents the product of the reserves. You need to enable JavaScript to run this app. The Address 0x88e0a61798a3ced52f7654a5d79a90737f346631 page allows users to view transactions, balances, token holdings and transfers of both ERC-20 and ERC-721 (NFT . It appears as a private transaction and although the contract is not the uniswap router, the operation is described as a uniswap v2 swap. * UniswapV2Library.sol -> UniswapV2Periphery.sol, and make the library a real library * Call the library directly wherever possible * Remove periphery inheritance and just use the V2 library * Remove duplicate library * Remove some unnecessary lines from periphery * Drop the periphery contract and interface * Address comments I dont really understand etherscan but I feel like my coins havent been lost, theyre just waiting for me to do something. It has a formalized model for pooling liquidity reserves. Start using @uniswap/v2-core in your project by running `npm i @uniswap/v2-core`. We will get to Uniswap V3 in a later article. Router02 Version: V2 Router02 Because routers are stateless and do not hold token balances, they can be replaced safely and trustlessly, if necessary. UniswapV2Factory.sol Address UniswapV2Factory is deployed at 0x5C69bEe701ef814a2B6a3EDD4B1652CB9cc5aA6f on the Ethereum mainnet, and the Ropsten, Rinkeby, Görli, and Kovan testnets. getAmountsIn To start, UNI is available through four liquidity mining pools: UNI holders may vote to add more pools after an initial 30-day . Swap, earn, and build on the leading decentralized crypto trading protocol. The Address 0xf9a98037b5ccd0185161d762278fc009c8056c4e page allows users to view transactions, balances, token holdings and transfers of ERC-20, ERC-721 and ERC-1155 . Introducing UNI. Uniswap Overview. The Address 0x93a2d8f93fc11976b3cc50ec15f4e95c07500aa2 page allows users to view transactions, balances, token holdings and transfers of both BEP-20 and ERC-721 (NFT . What happened. The Address 0x973d7d81f42095006f6ca0b665fc81f7f668f337 page allows users to view transactions, balances, token holdings and transfers of ERC-20, ERC-721 and ERC-1155 . The attacker then proceeded in depositing 19,900,000,000,000 rAXZZ into the . Improved Uniswap v2 TWAP oracle mechanism where a single on-chain call can retrieve the TWAP price with the the last 9 days. 以上二者从uniswap历史提交记录里面找，可以避免很多版本 . function getAmountsIn(address factory, uint amountOut, address[] memory path) internal view returns (uint[] memory amounts); Copy. 例如，如果你想在以太坊区块链上运行的 Uniswap 或 Sushiwap 上购买Router Protocol(ROUTE)，您可先通过法定货币购买 ETH，然后再进行目标代币的购买。 . This may happen if more efficient smart contract patterns are discovered, or if additional functionality is desired. We will be using Uniswap V2 in this article. About Uniswap (V2) Uniswap is a protocol for automated token exchange on Ethereum. First, we noticed that etherscan had marked the block with Flashbots and Private Transaction tags. Dec 9, 2019.waffle.json. Preferences Company. In this pool, the price of 1 UniFi = ~0.00114 ETH. Uniswap （V2） ROUTE/USDC: $2.76: $43,323.61 . The protocol uses the following WETH9 addresses on Ethereum and WMATIC addresses on Polygon. 工厂合约; weth合约; 路由合约; multicall合约; 2、前端. uniswap前端; uniswap sdk. The Contract Address 0xe0c777379ffbbc9ae0ec56d24cb5087d0c091e4f page allows users to view the source code, transactions, balances, and analytics for the contract . 11 11 13 15 17 20 22 25 27 01 03 06 08. upgrade to latest v2, router mvp. Aug 5, 2020 . Start using @uniswap/v2-core in your project by running `npm i @uniswap/v2-core`. This was also known as "ETH bridging". create .yarnrc to fix #37. Uniswap is a protocol for the decentralized exchange of tokens on the Ethereum blockchain. Here, because of Uniswap's exclusionary routing mechanism, the price of UniFi is lagging. how many homes lost in almeda fire; cqc interview questions for nominated individual; envelope stuffing jobs from home near me For a full description of v3 ' s features, please refer to our announcement blog pos t. This is prior to any confirmation popup from metamask, no confirmation ever pops. Get Uniswap (v2) total trading volume, trading fees, pair list, fee structure, and other cryptocurrency exchange info. If Metamask asks you whether you want to permit Etherscan to spend your USDT, as it did for me, double check the transaction details. I know now that I have sent coins directly to the uniswap v3 router address. . Prerequisites. Staked Uniswap V2 (STKD-UNI-V2) Token Tracker on FtmScan shows the price of the Token $0.0000, total supply 3,122.062229185965524787, number of holders 2 and updated information of the token. add metadata. If the ~$25m was concentrated into the 0.999 - 1.001 range it would provide the same depth as $50b in Uniswap v2. initial commit. Arbiscan Rinkeby Testnet Uniswap Info. Feb 4, 2020.prettierrc. When I first start the cli and call the function I get 'runtime error: revert' and on any subsequent calls with varying parameters I also get 'revert reason: UniswapV2: LOCKED'. You need to enable JavaScript to run this app. The Address 0x47b093c50e6f5911240173919cfcd744b577989c page allows users to view transactions, balances, token holdings and transfers of ERC-20, ERC-721 and ERC-1155 . This is probably an issue with one of the tokens you are swapping. This arguably increases gas costs slightly, but all in all worth it for the large oracle enhancement. $489B+. If the ~$25m currently held in the Uniswap v2 DAI/USDC pair was instead concentrated between 0.99 — 1.01 in v3, it would provide the same depth as $5bn in Uniswap v2 as long as the price stayed within that range. Uniswap Info. Eth: $1,818.92(+4.05%)| 194 Gwei Home Blockchain View Txns View Pending Txns TVL. Connect to Web3. Deposit. Core contracts for the UniswapV2 protocol. The Address 0x9795a9baac2f17e7c7f11686bc6bc2afc3d84612 page allows users to view transactions, balances, token holdings and transfers of both ERC-20 and ERC-721 (NFT . The token tracker page also shows the analytics and historical data. [Reset] Filter by: No Filter (PoS) Dai Stablecoin (PoS) Tether USD 50 Cent Aave (PoS) Adamant Balancer Balancer Polygon DeFi Index Bounty Pet BullRun Token Chain Games ChainLink Token CZDiamond Darkcoin DinoX Coin Firebird.Finance GammaBountyToken IRON . Then, it sells that UniFi for BUIDL via Uniswap's UniFi-BUIDL pool. No Filter 1INCH Token Aave Interest bearing LINK Aave Token Altitude Ampleforth Ankr Network Antiample Askobar Network Autonio Axie Balancer Balancer Pool Token Balancer Pool Token Balancer Pool Token Balancer Pool Token Balancer Pool Token BaoToken Binance USD Catnip Celsius ChainLink Token Compound CornDog Token CreedToken Curve DAO Token . . It is this "K" to which the "K" error refers. Check Ethereum (ETH) account 0x14ad5831d8767692d38e25aa0a8fb48e2cd1ba0e, its balance and transactions Jul 22, 2020.yarnrc. Uniswap V2 (UNI-V2) Token Tracker on Etherscan shows the price of the Token $0.0000, total supply 0.597220399002117509, number of holders 123 and updated information of the token. UniswapV2: K This is an error that is frequently encountered, and requires a bit of context to understand it. This is probably an issue with one of the tokens you are swapping. The Uniswap Protocol is an open-source protocol for providing liquidity and trading ERC20 tokens on Ethereum. The Address 0x9795a9baac2f17e7c7f11686bc6bc2afc3d84612 page allows users to view transactions, balances, token holdings and transfers of both ERC-20 and ERC-721 (NFT . After you deploy the contract you can use Remix or Etherscan to perform a swap or build a simple program in web3.py. In this pool, the price of 1 BUIDL = ~2.83 UniFi. If they are like above, you are fine and you will be approving Uniswap v2 router and not Etherscan. Trade Volume. Latest version: 1.0.1, last published: 2 years ago. Useful for calculating optimal token amounts before calling swap. No Filter Aavegotchi ALPHA Aavegotchi FOMO Aavegotchi FUD Aavegotchi GHST Token (PoS) Aavegotchi KEK GAX Liquidity Token Reward Uniswap V2 Uniswap V2 Wrapped Ether Txn Hash Block The Uniswap Protocol supports trading of ERC20 tokens. For any sale of these tokens the UI is reporting: The transaction cannot succeed due to error: UniswapV2: K. This is probably an issue with one of the tokens you are swapping. Uniswap v3 is the most powerful version of the protocol yet, with Concentrated Liquidity offering unprecedented capital efficiency for liquidity providers, better execution for traders, and superior infrastructure at the heart of decentralized finance. For this reason, routers have release numbers, starting at 01. There are 1153 other projects in the npm registry using @uniswap/v2-core. In order to swap a native asset like ETH (or MATIC on Polygon), the Uniswap protocol wraps these assets in an ERC20 wrapped native token contract. It eliminates trusted intermediaries and unnecessary forms of rent extraction, allowing for safe, accessible, and efficient exchange activity. Double check the fee Metamask is offering, it said ~$140 for me. It was launched on November 2, 2018. If you look at the internal transactions with the "advanced" setting on etherscan, you'll see that this transaction did interact with the uniswap contract. Double check the fee Metamask is offering, it said ~$140 for me.