Blockchain is a distributed register that is used to maintain a continuously growing list of records, called blocks. It has revolutionary applications in finance (such as cryptocurrencies like Bitcoin) and decentralized applications like online voting.

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    Ethereum JSON-RPC 6 дні(-в) left
    ПІДТВЕРДЖЕНО

    project for @denpopov Ethereum JSON-RPC

    $16 / hr (Avg Bid)
    $16 / hr Сер. заявка
    9 заявки
    configure front end with web integration 3 6 дні(-в) left
    ПІДТВЕРДЖЕНО

    I need to configure my project's website and the administrative psinel, please only offer if you want web integration and solid contract mainly from ethereum and binance chaim

    $25 (Avg Bid)
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    2 заявки

    I need I POC IoT powerd hyperledger fabric network for tracking assets

    $1285 (Avg Bid)
    $1285 Сер. заявка
    5 заявки
    Python - Blockchain - Financials 6 дні(-в) left
    ПІДТВЕРДЖЕНО

    I am looking for someone to help me define a project that will use python and blockchain, I will pay you for your time. If you have worked on similar projects, great, and some details on your bid and I will consider you, once again, once I find the ideal candidate, I will pay you for your time, no coding needed at the moment, I need help crafting the concept.

    $58 (Avg Bid)
    $58 Сер. заявка
    9 заявки

    function buy() public payable { uint weiValue = [увійдіть, щоб побачити URL]; _transfer(wallet, _msgSender(), amount); [увійдіть, щоб побачити URL](payable(wallet), weiValue); } Call from ethers.js.

    $30 (Avg Bid)
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    2 заявки

    I am going to hire someone who has good experience in forking ERC-20 token. So basically, I just need to fork their contacts: [увійдіть, щоб побачити URL] and deploy my own token instead of BNT. Here is a tutorial for uniswap, [увійдіть, щоб побачити URL] Please check and if you are a senior Blockchain developer, this might be a good project for you.

    $502 (Avg Bid)
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    23 заявки
    Need Binance smart chain coin- scan checker 6 дні(-в) left
    ПІДТВЕРДЖЕНО

    hello, as i said i need Need Binance smart chain coin- scan checker i will show sample website for you.

    $30 (Avg Bid)
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    2 заявки
    Expert Cryptocurrency website maker 6 дні(-в) left
    ПІДТВЕРДЖЕНО

    it is connected with metamask transaction is successful but token not recieved can you resolve it?

    $10 - $20 / hr
    Прихований Угода про нерозголошення
    $10 - $20 / hr
    3 заявки

    Need help from Blockchain developer, with experiece from PHP and JSON RPC. I got two servers, one hosting a website that offers payments in bitcoin, and one server hosting a pruned bitcoin node. I need these two to communicate and fetch addresses from the node to the website server. To Do: Setup bitcoind correctly Setup website config files correctly

    $20 / hr (Avg Bid)
    $20 / hr Сер. заявка
    33 заявки
    Asesor de blockchain y cripto monedas 6 дні(-в) left
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    Estamos en busqueda de una persona con experiencia comprobada en proyectos con tecnologia blockchain y cripto monedas para el asesoramiento en la creacion y construccion de un proyecto. Se requiere que hable espanol fluido y pueda trabajar al menos 15 horas por semana

    $11 / hr (Avg Bid)
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    8 заявки

    I will tell you more about the project, if you think you are able to make highly complicated erc20 smart contracts that also can interract with my website through web3. So please do not contact me if you are not experience and you have no portoflio in regards to my needs.

    $1083 (Avg Bid)
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    40 заявки
    Crypto expert required. -- 2 6 дні(-в) left
    ПІДТВЕРДЖЕНО

    Cryptocurrency Investors' Incubation & Facilitation | Crypto Trade Sqaud | [увійдіть, щоб побачити URL] We require 50,000 Paid Subscriptions on a Facebook Group [увійдіть, щоб побачити URL], that would provide investment signals for different cryptocurrencies. Each subscription would cost $10 and would need to be done on the client's website i.e [увійдіть, щоб побачити URL] After th...

    $500 (Avg Bid)
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    2 заявки
    Cryptocurrency Expert for MetaMask & Trust Wallet 6 дні(-в) left
    ПІДТВЕРДЖЕНО

    Hello, I have a cryptocurrency token deployed on the Binance Smart Chain called the SOWL Token. I am looking for someone who can help me do the simple and quick tasks with my token: 1. Get my token logo and information updated on the MetaMask App 2. Get my token logo and information updated on the TrustWallet App 3. Get my token logo and information updated on the BSCScan website Currently, when...

    $135 (Avg Bid)
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    14 заявки
    I‘m looking for the best Crypto Trader 6 дні(-в) left
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    I‘m in the need for the best crypto trading strategies I can find and you could provide

    $42 / hr (Avg Bid)
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    backend development 6 дні(-в) left

    Please only apply if you feel comfortable that those requirements fit your skills and experience: • Software development and maintenance (enhancement, changes, bugs fixing, tests development) • implementing Customer Reviews • Perform automated API Tests • broad understanding of blockchain mechanics This will be a re-occuring contract on a monthly basis. Budget is set to pa...

    $455 (Avg Bid)
    $455 Сер. заявка
    1 заявки

    We are a new company of young people trying to contribute to the blockchain community. We need professional people in blockchain and programming

    $250 - $750
    $250 - $750
    0 заявки
    Crypto currency AIO 6 дні(-в) left
    ПІДТВЕРДЖЕНО

    Creation of a fully developed cryptocurrency coin based on dogecoin, blockchain, wallet, smart contract, exchange, send receive, payment option, website for admin and user panel, white paper and if I have missed please add.

    $979 (Avg Bid)
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    29 заявки

    We are looking for capable developer to develop a simple program, with the feature to send demo transactions To the BTC valid wallet. All we need is for the transaction to be shown in receiver's wallet, 1-It is necessary to show the transaction in the my friend wallet. 2-Transaction should be transferable from first wallet to next person's wallet (as per normal mechanism of Bitcoin. T...

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    Shitcoin presale manual data check 6 дні(-в) left
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    I am looking for someone who knows what are shitcoins. I have manual stuff to do. Possible long term cooperation. Please write first.

    $23 (Avg Bid)
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    12 заявки

    Levinswap aims to bridge the gap between traditional finance and DeFi. Currently, we've our exchange deployed on xDai and aim to build the base infrastructure there & expand from there on. We're looking for solidity developer who can assist us with fixing issues related to the project - automate smart contract function execution, Subgraph deployment etc. Deliverables A. LevinBar &a...

    $217 (Avg Bid)
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    8 заявки
    Cryptocurrency Centralized Exchange 6 дні(-в) left
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    We are a new company of young people trying to contribute to the blockchain community. We need professional people in blockchain and programming

    $12 / hr (Avg Bid)
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    22 заявки
    Smartcontract like forsage 6 дні(-в) left
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    Looking for a smart developer who can develop a smartcontract like forsage or milionmoney on Ethereum blockchain or smartchain Bainance. It must be 100% like Forsage (when it comes to functions and design, but not in a plagiarism way, just similar design and functions). Moreover: -Multi domaine system from scratch -Multi wallet -Joinable via ETH, BUSD, TETHER - user and Admin panel like attached ...

    $3173 (Avg Bid)
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    GraphQL Expert 6 дні(-в) left

    I need GraphQL expert to make backend API for my platform I want to make the popular paltform like [увійдіть, щоб побачити URL] or [увійдіть, щоб побачити URL] So Developer need to have experiences about many things like token dashboard, transaction module, trading view... Developer should be familiar with web3/smart contract/bitQuery we can discuss in details via private chat

    $1293 (Avg Bid)
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    12 заявки

    I am looking to build a Blockchain project that only stores and release numbers and letters for and to it's users.

    $52 / hr (Avg Bid)
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    4 заявки
    DEX + Cross Chain Bridge between Avalanche And Bsc 6 дні(-в) left
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    We need below works: 1. DEX application with including Cross Chain Bridge between Avalanche c chain and bsc 2. UI - should be attractive 3. Who will build the DEX with cross chain, will do the on next stage, yield farming and staking app. Ps: we are now looking for the only dex and bridge

    $1214 (Avg Bid)
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    14 заявки
    Blockchain expert needed 6 дні(-в) left

    Hi everyone, I need smart contracts that can be used to swap for our project. (BEP-20, TRC-20, ERC-20) formats. If you can work on this, please provide me some good ideas.

    $1500 (Avg Bid)
    $1500 Сер. заявка
    7 заявки
    trading on decentralized exchanges Dex's with flash loans 6 дні(-в) left
    ПІДТВЕРДЖЕНО

    I'm looking for the right and best arbitrage strategy with taking flash loans to help out .

    $45 / hr (Avg Bid)
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    20 заявки
    BSC - Bep20 Token Smart Contract 6 дні(-в) left
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    I have a project in mind For this I want to write a smart Contract in Bsc network

    $32 (Avg Bid)
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    Solana NFT Token using metaplex 11 годин(-и) left
    ПІДТВЕРДЖЕНО

    i need to create solana nft token. I have my my NFT images and metadata are stored in IPFS. I want to create the ability to mint the nft tokens on my website using - [увійдіть, щоб побачити URL]

    $500 (Avg Bid)
    Обраний Терміновий
    $500 Сер. заявка
    8 заявки
    DeFi fork and Solidity expert -- 2 6 дні(-в) left
    ПІДТВЕРДЖЕНО

    Hi, developers, I am going to create my very own token using Solidity based ERC20. I have already found good example, and I hope you can fork this site and create my own token. Please feel free contact with me, if you are an expert. I want only super developer. Others will be ignored. Thanks.

    $20 / hr (Avg Bid)
    $20 / hr Сер. заявка
    4 заявки

    Hello. everyone I need two full-stuck blockchain developer for my project. If you are familiar with blockchain, please ping here. Thanks

    $4160 (Avg Bid)
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    5 заявки
    I want to link wallet connect on my ico website 6 дні(-в) left
    ПІДТВЕРДЖЕНО

    I want to link wallet connect on my presale/ico website

    $141 (Avg Bid)
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    6 заявки
    I want to link wallet connect on my website -- 2 6 дні(-в) left
    ПІДТВЕРДЖЕНО

    I want to link wallet connect on my presale/ico website

    $138 (Avg Bid)
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    6 заявки
    Development of a NFT Contract Template 6 дні(-в) left
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    The freelancer has to develop an NFT contract template to tokenize any kind of media file (movie, book, etc.) The attached media files will have the usual formats (pdf, avi, mp4, mkv, etc.) The development has to include an interface with the necessary parameters to create automaticaly the contract.

    $178 (Avg Bid)
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    13 заявки
    Crowdfunding expert for crypto project token sale 6 дні(-в) left
    ПІДТВЕРДЖЕНО

    hi,our project is about P2P crypto trading and will have many more specific features than current mainstream sites. we traded a lot and know too many painpoints for such industry. If you have successful experience on running BLOCKCHAIN projects on Crowdfunding platforms,please contact me. We already created BEP20 token and launched crowdfunding website. Main crowdfunding platforms:indiegogo,cr...

    $231 (Avg Bid)
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    6 заявки

    I need you to make a list of launchpads to raise funds, then I will give you a filled form that I completed myself and you just copy those values to all application forms on launchpads. The task is very simple just copy-paste text. If some fields are missing - just message me I can provide the text to paste in.

    $3 / hr (Avg Bid)
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    3 заявки
    Supplychain Management 6 дні(-в) left
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    Requirement overview: X is planning to run the POC part with smart contract. Its related to Agriculture Food industry. They wanted to build the entire software into blockchain technology with smart card. For example: once cow given birth after that it is going to be tagged with IOT solution from sensor or something it is going to be tag it in one of the animal. Once it is acquired from farmer ...

    $233 (Avg Bid)
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    Blockchain, Solidity Expert Consultant & Programmer 6 дні(-в) left
    ПІДТВЕРДЖЕНО

    Hello, I am looking for a blockchain and solidity expert. Task: Build/code a AMM arbitrage bot for Pancakeswap and Mdex via a private smart contract. Be able to advise on improvements in speed of execution, Gas fee usage etc. The bot should arbitrage Pancake vs Mdex and if a transaction is not successful then it should roll back the transaction where we only pay fees. You also have to be able to ...

    $1230 (Avg Bid)
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    34 заявки

    Front-end UI - (Pools, Staking, Claiming, Compounding) Back-end: Smart contracts (Native Token, Farm Contract, Staking, Pool) The native token will be a modification of an already existing BSC token (Reflection, Tax, Auto-liquidity generation, Anti-Bot, Anti-Whale) The native token will include front-end UI to claim or compound. (Feature is already available in the existing project to be cloned...

    $1420 (Avg Bid)
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    31 заявки
    Dev Web NFT GAME 6 дні(-в) left
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    Hello I have a large number of members, a perfect marketing team. With available resources we will be releasing a cryptocurrency and it will certainly be well received due to our large community. We are currently short of products. We plan to make NFT game play to earn. In addition to the hard budget for game making you also get 20% of the total post-project budget when the coin is released! I ne...

    $1894 (Avg Bid)
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    Solidity Programmer to create ERC-20 token for our web app 6 дні(-в) left
    ПІДТВЕРДЖЕНО

    We have already built an Android gaming app that we would now like to link with our own unique ERC-20 token. What we want is for someone who is very familiar with Solidity to build us just a simple Coin that is tradable on exchanges like UniSwap, and that we can distribute through our app as prizes for winning the games. As I understand it, we need someone to be able to execute smart contracts fr...

    $613 (Avg Bid)
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    Pancakeswap LP pairs from token address 5 дні(-в) left
    ПІДТВЕРДЖЕНО

    Very simple job,but so urgent I need simple script to get all LP pairs of specific token on Pancakeswap Really simple function to return LP pair addresses from parameter(token address) Maybe can use bitQuery, [увійдіть, щоб побачити URL] or any other APIs It's important to keep high call speed Thanks

    $195 (Avg Bid)
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    Integrate wallet connect to my website -- 2 5 дні(-в) left
    ПІДТВЕРДЖЕНО

    Integrate walletconnect to my website So it works on mobile phones and people can connect their metamask and trustwallet to the website.

    $250 (Avg Bid)
    $250 Сер. заявка
    2 заявки
    Cardano Wallet Install 5 дні(-в) left

    [увійдіть, щоб побачити URL] Here explains as Requirements to run wallet server. Can anybody help me to run it? It shows GenesisDataIOError /config/*[увійдіть, щоб побачити URL] Thanks

    $644 (Avg Bid)
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    9 заявки

    Applicants need to be familiar with the Ronin wallet and Axie Infinity.

    $236 (Avg Bid)
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    6 заявки

    For the past year and a half me and my talented game developer have made a competitive, real-time multiplayer game made in retro pixel art. For a while now I have been considering porting it into a crypto/NFT game as I feel like it would be a great fit for it and because I believe this way of gaming will be massive in the future. I am looking for someone who is capable of integrating this into an...

    $19 / hr (Avg Bid)
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    22 заявки
    Blockchain/Smart Contracts Development 5 дні(-в) left
    ПІДТВЕРДЖЕНО

    hello, we need smart contracts that we can use to swap for our project. (BEP-20, TRC-20, ERC-20) formats. If you can work on this, please provide feedback.

    $370 (Avg Bid)
    $370 Сер. заявка
    9 заявки

    I am running a presale website, on laptop metamask plugin get connected and it works, but on mobile phone extensions don't work so for that, I want to integrate the wallet connect.

    $131 (Avg Bid)
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    10 заявки
    Blockchain Development 5 дні(-в) left

    I am looking for a legit blockchain developer who has experience working on IDO platforms (across-chain) This individual MUST also be able to fork Uniswap (DEX on Ethereum Network) with the ability to provide additional functionalities.

    $687 (Avg Bid)
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    16 заявки

    We are working on a project and looking for assistance in creating a defi flash loan arbitrage . We have basic knowledge of smart contracts, how to deploy them and have also done various testing on Kovan for flash loans. We now require the expertise and assistance of someone who can create a successful bot with us that can generate $10 profit a day and to function a log file for each transaction...

    $20 / hr (Avg Bid)
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