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    302 ropsten etherscan jobs fundet, i prisklassen EUR

    I have crypterium tokens that I can see on etherscan however I need to be able to transfer them. I have a MEW wallet ( but they are not in it) and I need someone with technical expertise to help me transfer them.

    €63 (Avg Bid)
    €63 Gns Bud
    9 bud

    We need a smartcontract developer who can fix errors quickly in our test project. 1. We are deploying sim...smartcontract developer who can fix errors quickly in our test project. 1. We are deploying simple SmartContract to Ropsten test net but when we try to deploy it, an error is occured. It's error message we've got, "could not deploy due to insufficient funds" We know it's gas limitation value issue but we can't resolve this issue in any ways. 2. After deploying smart contract, we need to complete the web3 project that communicates with our smart contract, (sending token, creating wallet etc). We have already developed it but need to confirm if it works properly after we deploy smartcontract on Ropsten. We don't need to run it in ma...

    €162 (Avg Bid)
    €162 Gns Bud
    7 bud

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    Fremhævet Haster NDA

    We need a smartcontract developer who can fix errors quickly in our test project. 1. We are deploying sim...smartcontract developer who can fix errors quickly in our test project. 1. We are deploying simple SmartContract to Ropsten test net but when we try to deploy it, an error is occured. It's error message we've got, "could not deploy due to insufficient funds" We know it's gas limitation value issue but we can't resolve this issue in any ways. 2. After deploying smart contract, we need to complete the web3 project that communicates with our smart contract, (sending token, creating wallet etc). We have already developed it but need to confirm if it works properly after we deploy smartcontract on Ropsten. We don't need to run it in ma...

    €275 (Avg Bid)
    €275 Gns Bud
    5 bud

    I need someone to : 1- verify collection on opensea same as pic. no. 1 &2 2- specify token tracker on Etherscan same as pic. no. 3 & 4 3- verify token NFT on Etherscan same as pic. no. 5 & 6 ** i can not give anyone smart key or password >>

    €396 (Avg Bid)
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    5 bud

    Seeking an experienced blockchain developer that can create an ERC721 Smart Contract and build a new webs...page: Displays all NFTs created by ERC721 Smart Contract 5. NFT must be able to have complex data showing properties (make sure that Opensea picks up those data too) We have 3 Questions regarding your experience: 1. This job requires an experienced Blockchain Developer that has created ERC721 Smart Contracts. Have you created ERC721 Smart Contracts in the Past? If so, please provide links to EtherScan for us to review them. 2. Do you have experience integrating NFTs into a website? This job requires the creation of a website that displays the Non-Fungible Tokens that are created from the ERC721 Smart Contract you build. 3. Do you have experience integrating MetaMask into ...

    €1114 (Avg Bid)
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    5 bud

    I am trying to fork the airdrop tool via the github (), but when I attempt to run this via "npm install" in node I get compile errors. I want this to work on a different blockchain, so rather than pointing to Ethereum/Ropsten/Kovan/Rinkeby I want it to point to a custom network: network name: HPB Network chain ID: 269 block explorer: I have already deployed the Bulk Token Sending Address on the HPB network, to replace the original Ethereum Token sending address. The new address is: 0x02be70be15fa13341386e326c6bfccd89a725e6a () - Therefore the forked version should now point to this new address. For someone who knows

    €11 - €22
    €11 - €22
    0 bud

    I am looking for a smart contract to be created in solidity. What I want the contract to do is allow people to stake ERC20 tokens and earn another ERC20 token for doing so. So for example: I have already created two ERC20 tokens called 'TokenA' a...already created two ERC20 tokens called 'TokenA' and 'TokenB'. 1. User sends 'TokenA' to the smart contract to stake. 2. For every 24 hours they stake, the user earns 1% from TokenB supply for staking. For example: If the user stakes 100 'TokenA', then every 24 hours he earns 1 'TokenB'. 3. Users should be able to remove/withdraw their stakes/earnings at any time. All contracts will be tested in ropsten testnet first. If the contract works I will deploy it on the mainnet. ...

    €3675 (Avg Bid)
    €3675 Gns Bud
    6 bud

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    Fremhævet Haster Forseglet NDA

    Which ERC standard would you recommend? We are looking to build a platform that allows people to trade NFTs in a unique way. -Allow users to connect their social profiles from twitter, Facebook, Instagram and import their posts -Allow users to mint their posts -Receive, HODL & Send NFTs -Buy and Sell NFTs using E...Facebook, Instagram and import their posts -Allow users to mint their posts -Receive, HODL & Send NFTs -Buy and Sell NFTs using Ethereum Please contact for more information. We are glad to go into the exciting details with those that contact us and are willing to sign an NDA. -With Admin dashboard -With clean minimal UI Design & User Dashboard -homepage similar to superrare -External Etherscan Link for TX History -Solidity -ERC721 or ER...

    €4461 (Avg Bid)
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    8 bud

    Seeking an experienced blockchain developer that can create an ERC721 Smart Contract and build a new website...3. Account page: Displays details of users account 4. Main page: Displays all NFTs created by ERC721 Smart Contract 5. Details page: Shows the details of an NFT We have 3 Questions regarding your experience: 1. This job requires an experienced Blockchain Developer that has created ERC721 Smart Contracts. Have you created ERC721 Smart Contracts in the Past? If so, please provide links to EtherScan for us to review them. 2. Do you have experience integrating NFTs into a website? This job requires the creation of a website that displays the Non-Fungible Tokens that are created from the ERC721 Smart Contract you build. 3. Do you have experience integrating MetaMask into ...

    €2145 (Avg Bid)
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    14 bud

    two demands, first is a front running sniper bot in uniswap, h... return price and liquidity. and the request time should be very small and respond quickly. function 2 is market order with keywords token A (to sell), token B (to buy), amount (token A), gas, gas limit, the recipient address. it returns the tx function 3 is limit order, with similar keywords as in market order function, and of course price in addition; function 4 gets current gas info from etherscan, returns the gas amount corresponding to low, average and high function 5 gets the status of an order, returns if it's pending, failed or success. input tx function 6 gives me my account balance in my eth wallet If all these things can work in sushiswap too, I can pay more. Demand 2 only is also acceptable. welcom...

    €1187 (Avg Bid)
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    5 bud

    We are looking for someone to help take our Token to the next level. We currently have a dev team building our network and completing our website. We would like to have our token public profile updated and Token application for all exchanges and etherscan info updated. Major goals -- - Token info updated on - Token added to at least two exchanges and added to uniswap with full project profile completed - Major wallet profiles completed ( Wallet ( coinBase), TrustWallet, MetaMask Wallet ) Please ask any questions!

    €276 (Avg Bid)
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    8 bud

    Requirements: - Solidity and Web3 - Metamask and truffle - Ganache, Geth, Solc, Remix and Etherscan - Binance Smart Chain, DeFi swap and lending - DeFi Smart Contract Audit

    €37 / hr (Avg Bid)
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    17 bud

    Hi , I have these requirements Erc20 token ICO smart contract crowdsale with single page site with trust wallet and metamask and coinpaymentapi payment gatway dynamic distribution of token verification on etherscan whitepaper source code Roadmap on single page website Intergration with private wallet like trust wallet and metamask

    €733 (Avg Bid)
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    5 bud

    Please review the attached document. You will need to have solid knowledge of the Ampleforth protocol and Defi in order to complete this project.

    €403 (Avg Bid)
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    2 bud

    I want a program which can run on etherscan find liqduity trax for uniswap and place a buy transaction with same gas price and limit

    €214 (Avg Bid)
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    3 bud

    I want a program which can run on etherscan find liqduity trax for uniswap and place a buy transaction with same gas price and limit

    €303 (Avg Bid)
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    5 bud

    I want a program which can run on etherscan find liqduity trax for uniswap and place a buy transaction with same gas price and limit

    €232 (Avg Bid)
    €232 Gns Bud
    1 bud

    I want a program which can run on etherscan find liqduity trax for uniswap and place a buy transaction with same gas price and limit

    €1857 (Avg Bid)
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    1 bud

    I would need to build a mainnet and a smart contract for issuing tokens. the digital coin has already been done on the Etherscan platform

    €1274 (Avg Bid)
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    18 bud

    Hi. Posting new job as discussed in chat. Creation of ERC20 Token with following Specification: Name: Crypto Dystopia game Token Type: ERC 20 Decimals: 18 Ticker: CDGT Total supply: 200 000 000 + Testing on test network + Adding information to Etherscan when it becomes available

    €279 - €279
    €279 - €279
    0 bud

    Estoy en busca de un especialista en contratos inteligentes en Ethereum para realizar la verificación de un contrato en Etherscan, el contrato ya está listo, auditado y publicado en Ethereum. Solo falta la verificación Etherscan.

    €46 (Avg Bid)
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    2 bud
    Create ICO site Udløbet left

    Hi , I have these requirements - Integrate already created ERC20 Token. - ICO smart contract - Crowdsale with single page site with metamask integration.(has to show availability, % assigned, softcap,hardcap, time left, capital raised) - Automatic distribution Token when payment is received. - verification on etherscan - whitepaper creation - Roadmap on single page website - Pre-ICO stage and option to make 1 or 2 ICO stages. - Good admin panel to track registered users, KYC, Voluma purchased etc...

    €412 (Avg Bid)
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    Hi , I have these requirements Erc20 token ICO smart contract crowdsale with single page site with trust wallet and metamask and coinpaymentapi payment gatway dynamic distribution of token verification on etherscan whitepaper source code Roadmap on single page website Intergration with private wallet like trust wallet and metamask

    €523 (Avg Bid)
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    6 bud
    config ethereum amm Udløbet left

    Hi, We are looking to have someone config project to work on ropsten. We are looking for a team of Ethereum Developers. Send us your portfolio. must be: - Certified Blockchain developer - Ethereum - Smart contracts, DeFi, Uniswap, Yield Farming, Staking, ERC20, Casino Games, Exchanges, DEX CEX, dApps, Wallets Thanks Read Less

    €130 (Avg Bid)
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    1 bud

    I need a simple blockchain casino game. The needs to be implemented on Ethereum's blockchain using Smart Contract. The token that would be used for betting isn't Ether but an ERC20 token that I made. I need the game smart contract and the JavaScript frontend. The game is called Roll the Dice should work like this: A user opens the JavaScript webapp. ...betting * 5.8 (the ERC20 token that we'll use have 0 decimals so we need to round it, when rounding the wins we are always just removing the decimal or doing floor in other words) All the bets, number generation, winnings calculation and claiming of winnings should be implemented on the Smart Contract. The final deliverables should be the Smart Contract and JavaScript webapp. I will provide the Ropsten testnet ER...

    €1155 (Avg Bid)
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    13 bud

    Bonjour, je cherche un développeur pour créer un programme automatisé pour les décomptes cryptos. (ex. , ) le programme devra pouvoir aller rechercher grâce à des API des informations dans des sites (Etherscan, bitcoin block explorer, etc.) afin de pouvoir extraire toutes les transactions effectuées par un wallet. Ainsi que d'additionné ou de soustraire les dépôts et les retraits. Exemple de site : / Merci de me fournir vos échelles de prix. Meilleures salutations.

    €1911 (Avg Bid)
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    21 bud

    ...the user first login, the script will automaticaly generate Ethereum Wallet Address for this user, based on their email & password (one time only per user) Then display member Area on the member area there will be Main Functions : 1. Show Ethereum Address & Ethereum Balance and Our Token balance 2. Send Token or Ether to another Ethereum Address 3. Check transaction on Blockcahain (can use Etherscan API) 4. Reporting and transaction history (IN and OUT transaction) 5. Download/Backup user Wallet Private key and Keystore JSON File 6. logout Link Use responsive CSS Layout and mobile friendly page, no image The flow : On main screen Show Login Form and Register Link if user enter login data, then display Member Dashboard (after validating the login) if user click regist...

    €890 (Avg Bid)
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    18 bud

    i am l...am looking for a professional full stack developer that can develop a complete token system platform, and you need to provide me your work Samples It will write a smart contract in solidity language It will test and audit that smart contract It will use SafeMath libraray to avoid integer overflow and underflow It will deploy the smart contract on ropsten test network and main ethereum network. It will publish and verify the smart contract on etherscan It can also create front end of those smart contracts to interact with it. It can reate ICO website for token It will be working with full dapp (erc20 token, dapp, smart contract, ico on ethereum) test site that we can verify your code if you are fit these projects WE NEED IT URGENTLY ONLY PROFESSIONAL NEEDED PLEASE R...

    €166 (Avg Bid)
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    3 bud

    Hi Rahul S., I'm looking for a way to code swap tokens using uniswap. If you know how to do the same from uniswap smartcontract (from etherscan), then also i'm interested. Please message me back so that we can discuss.

    €28 (Avg Bid)
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    1.1 Token Issue : 1 Day - ERC20 Smart Contract : Total supply including future issue will be fixed. - Choose one of below tool after comparison and tell us why you choose. o Embark o Populus o Truffle - Etherscan contract authentication 1.2 AirDrop API and Working Web : 2 Day - Wallet Connect - Transfer token to each wallet as configured - Block same wallet transfer - Block same IP wallet trafer ( in different wallet address ) from 4th time trial - All airdrop transaction history : address/time/amount/ip - Start/Pause Airdrop 1.3 Management Admin UI : 5 Day - Token transfer - Burn - Pause - Lock Up - Additional issue - Manual/Periodical issue - Bounty - All History : address/time/amount/ip - Owner authentication - Decimal - Symbol - Name - Payable Output...

    €1016 (Avg Bid)
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    10 bud

    Update token Logo on Etherscan and Trust wallet and Metamask

    €28 (Avg Bid)
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    2 bud

    Hi, I have a ready working code of a ERC20 ICO token but I need someone to add 3 Extra function to this token. 1. Mint (_address, _amount_uint-256) 2. Freeze (_userAddress, _amount_uint-256) 3. Unfreeze (_userAddress, _amount_uint-256) I need this code immedi...this token. 1. Mint (_address, _amount_uint-256) 2. Freeze (_userAddress, _amount_uint-256) 3. Unfreeze (_userAddress, _amount_uint-256) I need this code immediately, so I'am attaching my working ICO solidity contract code here and you have to add just these three functions and have to send me the the code, make sure to check it before you submit, after you send me the code, I'll check it on ropsten testnet and after verifying that every function is working, you will get your payment. Plz try to do it today, i ...

    €37 (Avg Bid)
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    Hi Juraj K., I noticed your profile and would like to offer you my project. We can discuss any details over chat. I looked up to your project's reviews that you already done this contract: https://www.freelancer.com/projects/blockchain/Create-Smart-Contract-Solidity-working/ (we call it "contract A") I have searched so long to find someone that...blockchain? 4. I already have the token, can I use that with your newly created smart contract? 5. For the payout, is I need ETH funds or something else to pay the transaction fees? Can it be 'free' by using any method? I can make the bid amount higher if I think the requirements are completely fulfilled. And for my trust to choose you, is there any link to the contract A on ropsten test network? I mean on et...

    €325 (Avg Bid)
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    Olá, preciso da criação de uma plataforma web para monitorar transações/atividades na blockchain do Ethereum. A plataforma deve informar ao usuário quando novas transações/atividades ocorrerem em determinados endereços na blockchain,...blockchain do Ethereum. A plataforma deve informar ao usuário quando novas transações/atividades ocorrerem em determinados endereços na blockchain, com informações em tempo real, conforme dinâmica a ser repassada ao desenvolvedor. É Importante que o desenvolvedor entenda e saiba ler qualquer transação/atividade ocorrida na rede Ethereum. Pode ser usado API de algum Blockchain Explorer (tal como o Etherscan), o que ofer...

    €696 (Avg Bid)
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    3 bud

    I need someone who can help me to create a smart contract on the ethereum blockchain for etherscan

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    20 bud

    Hi Muhammad Dandi I need developer to make erc token staking. contract is already at etherscan. but i had to let go my developer. So i need to finish my project. website you can find at limited. metamask web wallet. or walletconnect tools. I will have ongoing project so i will need your help all over again. price for this project is not specified i will need your response how much it would be cost. Wand we can go from there, Thanks

    €232 (Avg Bid)
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    1 bud

    designing a Telegram bots with Python form EtherScan API

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    The task is simple: 1. create ERC20 token 2. deploy in Ethereum mainnet 3. transfer control of the wallet and all tokens to me 4. give me the source code and show me the contract on etherscan

    €132 (Avg Bid)
    €132 Gns Bud
    6 bud

    I am looking for a smart contract to be created in solidity. What I want the contract to do is allow people to stake ERC20 tokens and earn another ERC20 token for doing so. So for example: I have already created two ERC20 tokens called 'TokenA' a...already created two ERC20 tokens called 'TokenA' and 'TokenB'. 1. User sends 'TokenA' to the smart contract to stake. 2. For every 24 hours they stake, the user earns 1% from TokenB supply for staking. For example: If the user stakes 100 'TokenA', then every 24 hours he earns 1 'TokenB'. 3. Users should be able to remove/withdraw their stakes/earnings at any time. All contracts will be tested in ropsten testnet first. If the contract works I will deploy it on the mainnet. ...

    €720 (Avg Bid)
    €720 Gns Bud
    3 bud

    I am looking for a smart contract to be created in solidity. What I want the contract to do is allow people to stake ERC20 tokens and earn another ERC20 token for doing so. So for example: I have already created two ERC20 tokens called 'TokenA' a...already created two ERC20 tokens called 'TokenA' and 'TokenB'. 1. User sends 'TokenA' to the smart contract to stake. 2. For every 24 hours they stake, the user earns 1% from TokenB supply for staking. For example: If the user stakes 100 'TokenA', then every 24 hours he earns 1 'TokenB'. 3. Users should be able to remove/withdraw their stakes/earnings at any time. All contracts will be tested in ropsten testnet first. If the contract works I will deploy it on the mainnet. ...

    €426 (Avg Bid)
    €426 Gns Bud
    3 bud

    I am looking for a smart contract to be created in solidity. What I want the contract to do is allow people to stake ERC20 tokens and earn another ERC20 token for doing so. So for example: I have already created two ERC20 tokens called 'TokenA' a...already created two ERC20 tokens called 'TokenA' and 'TokenB'. 1. User sends 'TokenA' to the smart contract to stake. 2. For every 24 hours they stake, the user earns 1% from TokenB supply for staking. For example: If the user stakes 100 'TokenA', then every 24 hours he earns 1 'TokenB'. 3. Users should be able to remove/withdraw their stakes/earnings at any time. All contracts will be tested in ropsten testnet first. If the contract works I will deploy it on the mainnet. ...

    €292 (Avg Bid)
    €292 Gns Bud
    5 bud

    I am looking for a smart contract to be created in solidity. What I want the contract to do is allow people to stake ERC20 tokens and earn another ERC20 token for doing so. So for example: I have already created two ERC20 tokens called 'TokenA' a...already created two ERC20 tokens called 'TokenA' and 'TokenB'. 1. User sends 'TokenA' to the smart contract to stake. 2. For every 24 hours they stake, the user earns 1% from TokenB supply for staking. For example: If the user stakes 100 'TokenA', then every 24 hours he earns 1 'TokenB'. 3. Users should be able to remove/withdraw their stakes/earnings at any time. All contracts will be tested in ropsten testnet first. If the contract works I will deploy it on the mainnet. ...

    €9 (Avg Bid)
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    Need a smart contract written in solidity where the balance of a coin is checked in ethereum wallets (an etherscan api call) that when it detects coins from a particular contract (exampletoken1 at address 0x....1)

    €385 (Avg Bid)
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    Hello there, Please just apply for this job if you have experience in this kind of project. We will interview you to be sure you have what we are looking for, during the interview make sure you have all environment ready and running. We want to ...development. We want to have what you already did. We will send you the token parameters to write the smart contract and the domain name to compile the Web APIs. Regarding custom development, we will pay you for the working hours. About the Project: - Write Smart Contract in Solidity for Stablecoin by using OpenZeppelin - Code verification and Update company information on Etherscan - Deployment (Mainnet and Ropsten) - Write Blockchain Web API in .Net Core C# by using Nethereum () - Blockchain Web API Deployment - Github for t...

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    This project will result in a web application that enables users to interface with an Ethereum smart contract using Web3 to connect to a user's Metamask wallet The interface should be a Progressive Web Application (PWA), but a mobile-friendly web app is also acceptable if you're not familiar with PWAs APIs used: Etherscan Smart contract: already developed UI framework: Bootstrap (preferred) or Laravel There are three main functions of the web app 1) Buy - allows users to buy the contract's token in exchange for ETH, see other metadata associated with their wallet in the contract, and perform 1 function with the contract (a token transaction/transfer) 2) Send Tokens - will allow users to perform a transaction/transfer (in 2 steps) and see metadata for their wallet...

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    We need to verify on Etherscan an existing ERC20 built in Mint in 2018 with pragma solidity 0.4.16. You'll need to flatten and verify the source code and performed the Token Update Application Form. We have ownership of the token. The token address will be shared privately

    €516 (Avg Bid)
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    We need to verify on Etherscan an existing ERC20 built in Mint in 2018 with pragma solidity 0.4.16. You'll need to flatten and verify the source code and performed the Token Update Application Form. We have ownership of the token. The token address will be shared privately

    €464 (Avg Bid)
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    1 bud