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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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    215 trabajados encontrados, precios en USD

    Hola, estamos buscando un programador serio y con experiencia en Solidity (Etherum) para desarrollar un contrato inteligente BEP20. El contrato inteligente debe tener las siguientes características: Cada transacción cobraría 3% de comisión y se distribuirán de la siguientes forma: 1% entre los holders 1% se envía una dirección especifica (marke...

    $274 (Avg Bid)
    $274 Oferta promedio
    7 ofertas

    Necesito un smart contract creado en la red de TRON que tenga las caracteristicas de transacciones esto llevado con una token para realizar pagos de productos en mi web y que se registren, tambien necesito que el inicio se secion sea por la wallet y que mediante una consulta pueda registrar esa wallet en una base de datos mysql para no tener replicados de usuarios dentro de la web con los mismos d...

    $9 / hr (Avg Bid)
    $9 / hr Oferta promedio
    5 ofertas

    Busco alguien que me pueda ayudar con mi trabajo, necesito alguien que entienda de blockchains para q me pueda ayudar a crear una criptomoneda y ponerla en marcha, es para un trabajo, nada comercial. Necesito personas que tengan como lengua materna el español. En principio he visto para basarme en el token de Ethereum aunque no descarto otras monedas

    $19 (Avg Bid)
    $19 Oferta promedio
    3 ofertas

    need to deply smartcontract in tron blockchain smart contract is ready. need help with web3js integration and contract deployment.

    $8 - $683
    $8 - $683
    0 ofertas

    Hello, i want to list my new BEP20 token on exchanges sites like coinmarketcap, coingecko, binance and other exchange websites.

    $10 - $30
    $10 - $30
    0 ofertas

    transfer trc20 tron based token to others via smart contract in tronscan blockchain

    $171 - $512
    $171 - $512
    0 ofertas

    I need a blockchain system like [iniciar sesión para ver URL], it is about doing missions of your favorite games and each achievement or mission is more points, but [iniciar sesión para ver URL] is winning from that part, it cannot give money just like that, yes you are interested just write [Removed by Freelancer.com Admin for offsiting - please see Section 13 of our Terms and Condi...

    $435 (Avg Bid)
    $435 Oferta promedio
    7 ofertas

    need to deply smartcontract in tron blockchain smart contract is ready. need help with web3js integration and contract deployment.

    $20 - $171
    $20 - $171
    0 ofertas

    Looking for a senior blockchain developer

    $3000 (Avg Bid)
    $3000 Oferta promedio
    1 ofertas

    transfer trc20 tron based token to others via smart contract in tronscan blockchain

    $95 (Avg Bid)
    $95 Oferta promedio
    1 ofertas

    i want to create a smart contract that facilitates anyone with my trc20 token to transfer to others via my smart contract.

    $171 - $512
    $171 - $512
    0 ofertas

    I'm looking to hire a Developer to create an arbitrage trading bot as well as a price percentage difference indicator with constant live updates , between two Defi browsers exchanges utilizing Web3. Looking for someone: - Experienced in Web3 , JavaScript and Python preferably. - With Crypto experience , knowledge in Binance Smart Chain and Ethereum. - Easy to to communicate with who will ex...

    $1133 (Avg Bid)
    $1133 Oferta promedio
    6 ofertas

    Transfer TRC20 Token via Smart Contract to multiple address

    $20 - $171
    $20 - $171
    0 ofertas

    i want to create a smart contract that facilitates anyone with my trc20 token to transfer to others via my smart contract.

    $20 - $171
    $20 - $171
    0 ofertas

    need to a smart contract to send trc20 tokens to multiple addresses

    $171 - $512
    $171 - $512
    0 ofertas

    need to a smart contract to send trc20 tokens to multiple addresses

    $20 - $171
    $20 - $171
    0 ofertas

    I'm looking to hire a Developer to create an arbitrage trading bot as well as a price percentage difference indicator with constant live updates , between two Defi browsers exchanges utilizing Web3. Looking for someone: Experienced in Web3 , JavaScript and Python preferably. With Crypto experience , knowledge in Binance Smart Chain and Ethereum. Easy to to communicate with who will explain ...

    $897 (Avg Bid)
    $897 Oferta promedio
    4 ofertas

    Wtite a very simple script in javascript that will swap tokens in BSC. It will take as input: 1. the contract address to buy 2. the currency you want to spend (BNB/BUSD) 3. the amount u want to send 4. gas amount 5. gas limit 6. slippage 7. and any other required parameters

    $130 (Avg Bid)
    $130 Oferta promedio
    9 ofertas
    COIN DEVELOPMENT 6 días left

    Hi, I'm Martins by name. I want to develop a coin like bitcoin, it should be named megacoin. Its rate must be $60,000 per one megacoin. I only need professionals that can answer thousands of questions because I have to be sure if you are capable and also if that's the right choice for me. Wish you all the best. Thanks. Martins.

    $5000 (Avg Bid)
    $5000 Oferta promedio
    1 ofertas

    We need a presale website for our BEP20 token. We need to integrate the site into our [iniciar sesión para ver URL] website, respectively give it a subdomain from our own server. Please no hidden costs in the offer. Colours, design and logo will be provided. Please show design proposals in the offer

    $350 (Avg Bid)
    $350 Oferta promedio
    5 ofertas
    NFT Maretplace 6 días left
    VERIFICADO

    This job required strong blockchain, smart contracts, and Solidity and proper understanding in NFT. Please do not bid if you have not one anything similar before. More info to be shared

    $633 (Avg Bid)
    $633 Oferta promedio
    9 ofertas

    I want software that pulls tokens on the network from the ERC-20 blockchain from ethereum. I have a wallet that has some tokens but no ETH balance. The moment the ETH balance falls into this wallet, I want the software IMMEDIATELY to withdraw these tokens, sending them to another wallet. It is necessary that the sending is IMMEDIATE, in the smallest possible fraction of a second. I imagine foll...

    $20 (Avg Bid)
    $20 Oferta promedio
    1 ofertas

    The target website is [iniciar sesión para ver URL] [iniciar sesión para ver URL] Only those with experience apply

    $611 (Avg Bid)
    $611 Oferta promedio
    6 ofertas

    I am looking for an expert at creating cryptocurrencies to develop a fast Proof of Stake cryptocurrency using its own customized network like EOS and XRP. This means that the transaction time between receiving and sending the crypto should be about 5 seconds. I will provide more information about the project in private with whoever is interested in taking on this job.

    $740 (Avg Bid)
    Acuerdo de Confidencialidad
    $740 Oferta promedio
    5 ofertas
    $802 Oferta promedio
    6 ofertas

    Hello, we have a token on BSC, now we are looking into expansion into multiple blockchains, as many as possible but thinking ETH and Tron works now. We need a professional to help us wrap the token on these networks. Kindly start your bid with "i can do it" if you really can. Also, you may want to bid only if you have done this before. Thank you.

    $592 (Avg Bid)
    $592 Oferta promedio
    7 ofertas

    We are looking to create BTC, USDT wallets, get crypto current price, sell/buy BTC from our website via crypto exchanges API like Binance, etc. The spot market transaction fees will be the main criteria selecting APIs to use. We only need freelancers with experience integrating exchanges APIs integrations.

    $411 (Avg Bid)
    $411 Oferta promedio
    8 ofertas

    I want to create new coin and deploy it. Don't auto bid.

    $50000 (Avg Bid)
    $50000 Oferta promedio
    2 ofertas

    Я хочу создать торгового бота, который может автоматически покупать определенные недооцененные товары на этой торговой площадке блокчейна WAX: [iniciar sesión para ver URL] [iniciar sesión para ver URL] - блокчейн на котором видно все транзакции Если цена товара на 50% ниже средней рыночной цены, необходимо отправить заказ на покупку товара с помощью WAX. Ценность предмета мож...

    $250 - $750
    $250 - $750
    0 ofertas

    Looking for someone to create a bot that detects when new liquidity is added to an AMM (automated market maker) pool on PancakeSwap & Uniswap. The bot allows me to buy any newly added token from PancakeSwap and Uniswap in amazing speeds (up to zero seconds from the time of the listing). It is called "sniping". The bot works by: Connecting to the blockchain network, scanning for all...

    $824 (Avg Bid)
    $824 Oferta promedio
    20 ofertas
    Blockchain consultant 6 días left
    VERIFICADO

    For a blockchain supply chain and microfinance solution... We prefer all blockchain as a service existing solution

    $153 (Avg Bid)
    $153 Oferta promedio
    10 ofertas

    We need to build a team of Solidity Developers, to build, develop and launch our new token, which will eventually be our own coin, we also need the design and skin, UI of the site too Ideally have launched cryptos and tokens, smart contracts and coins, familiar with Ether, BNB, Cardano, DCA, etc Must have proven experience and references, and available to speak daily in English. Immediate star...

    $40 / hr (Avg Bid)
    $40 / hr Oferta promedio
    27 ofertas

    Looking for pancake swap expert. Please share your previous work result I will check it first and will open chat to discuss it details

    $1500 - $3000
    $1500 - $3000
    0 ofertas
    NFT Marketplace 6 días left

    Hello, I am looking to develop a NFT Exchange where digital assets like art, music, image, tweets, etc can be bought and sold via cryptocurrency (ETH). For example : 1. People should be able to buy/sell/bid NFTs 2. Ethereum Integration 3. Simple UI Check out [iniciar sesión para ver URL] for more idea

    $3413 (Avg Bid)
    $3413 Oferta promedio
    1 ofertas

    Need team for crypto project for marketing Must have prev experience. I will ask for it!

    $1007 (Avg Bid)
    $1007 Oferta promedio
    7 ofertas
    Review of Solidity contract 6 días left
    VERIFICADO

    Hello Freelancers, I need a review of a Solidity contract built on the BEP20 chain

    $180 (Avg Bid)
    $180 Oferta promedio
    15 ofertas

    TRADING EXCHANGE PLATFORM SOFTWARE REQUIREMENTS To begin with, a platform will be developed where easy buying/selling transactions (instant buy/sell) will be made using only global stock market APIs. The platform is expected to meet the following expectations. Github will be used as version control system and Trello will be used as Project management tool. Developers are free to use the software l...

    $2227 (Avg Bid)
    $2227 Oferta promedio
    22 ofertas

    I want you to create a decenterialized exchange with a stable coin over Polygon chain

    $12 / hr (Avg Bid)
    $12 / hr Oferta promedio
    1 ofertas

    I have a list of transactions, in various cryptocurrencies. Find similar matching amounts and highlight them in excel. Example: Sent 0.3 BTC to exchange on 4/8/2019, and received 80 LTC on 4/8/2019 (30 mins later) - This is likely a crypto trade, highlight the two likely In and out TXIDs. Some txids will not be exchanges, so use similar timeframe to gather info.

    $15 / hr (Avg Bid)
    Acuerdo de Confidencialidad
    $15 / hr Oferta promedio
    16 ofertas

    need to accept trc20 tokens via website (based off smart contract)

    $54 (Avg Bid)
    $54 Oferta promedio
    1 ofertas

    Hello, i am looking for someone who can integrate smart contracts on my website

    $1108 (Avg Bid)
    $1108 Oferta promedio
    9 ofertas

    Looking for a talented blockchain developer & E Commerce expert to build a project from the ground. 1. Website - Gallery (E-commerce Store) running on ETH 2. Metamask Wallets connection. 3. ERC 721 / ERC 1155 contracts including Traits for the Tokens. 4. Integration with OpenSea & Other Markets in the future. 5. All on IPFS. 6. Testing the Testnet. 7. Real MainNet

    $4541 (Avg Bid)
    $4541 Oferta promedio
    6 ofertas
    Create dapp 5 días left
    VERIFICADO

    Looking for a serious developer to create Dapp for my already made token

    $519 (Avg Bid)
    $519 Oferta promedio
    18 ofertas
    Do Crypto & Blockchain Integration 5 días left
    VERIFICADO

    Hello I have a game being developed by a developer. I need to hire a crypto/blockchain expert to help do the following: 1. Payment integration for the game so that when users buy something then they can do payments either via Fiat money like US$ or via crypto currencies like bitcoins. Freelancer needs to propose which service he is proposing for the dual shopping cart that will allow Fiat and Cry...

    $237 (Avg Bid)
    $237 Oferta promedio
    9 ofertas

    Hi, I need you to teach me how to create a new token on Binance Smart Chain (BSC). 1. Create token - Smart contract 2. Liquidity burned 3. Liquidity Locked 4. Deploy 5. Distrubution of Tokens to holders 6. Taxes These are some of the topics you need to guide me with.

    $20 (Avg Bid)
    $20 Oferta promedio
    3 ofertas

    I have a cryptocurrency altcoin custom and i am trying to have listed however i am receiving these points Leverage cryptography, consensus algorithms or distributed ledgers, peer-to-peer technology and/or smart contracts to function as a store of value, medium of exchange, unit of account, or decentralized application. . Must be traded publicly, looking for installation or other help I have ...

    $149 (Avg Bid)
    $149 Oferta promedio
    10 ofertas

    We are going to build NFT Trading Platform on Hyperledger. All designs are ready.

    $500 (Avg Bid)
    $500 Oferta promedio
    12 ofertas

    Hello, i am looking for someone who can integrate smart contracts on my website

    $157 (Avg Bid)
    $157 Oferta promedio
    4 ofertas