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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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    237 trabajados encontrados, precios en USD

    Prefiero mantener la confidencialidad del proyecto hasta que contacte con la persona en cuestión. Básicamente, es una colección de NFTs en la blockchain de solana.

    $1315 (Avg Bid)
    $1315 Oferta promedio
    18 ofertas
    CLICK TO EARN 6 días left

    Busco programador en blockchain solidity Bsc para crear un juego nft click to earn parecido a cryptomines, godz, piratas world, quiero que el juego tengo buscan esos juegos entenderan lo q estoy buscando, que se pueda conectar metamask, comprar,diseñar todo nft web etc etc. Busco a alguien que pueda lograr un click to earn igual a cryptomines.

    $536 (Avg Bid)
    $536 Oferta promedio
    16 ofertas

    e busca programador para desarrollo blockchain. Token BSC Web dinamica dapp Staking Swap Farm Conocimientos de auditoria, preventas, listados. Categoría: Programación y Tecnología Subcategoría: Programación Web

    $1354 (Avg Bid)
    $1354 Oferta promedio
    23 ofertas

    Somos una empresa de Consultoría informática, que busca consolidar un equipo de desarrolladores especialistas en Smart Contract y Blockchain para desarrollar los diferentes proyectos que tenemos contratados.

    $1300 (Avg Bid)
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    22 ofertas

    Se necesita un desarrollador en blockchain para la red BSC, para crear un contrato y una DAPP (web) para SOLO realizar una preventa de nuestro proyecto... Se requiere el código del contrato y el código backend para la interacción con este. Y el despliegue en servidor (esto podría ser opcional)

    $1211 (Avg Bid)
    $1211 Oferta promedio
    20 ofertas

    Se me ha atascado una transacción de criptomonedas en la red Etherum, necesito desbloquearlo.

    $24 (Avg Bid)
    $24 Oferta promedio
    3 ofertas

    Necesito un desarrollador blockchain para crear un juego NFT. con conocimiento en web3 para login con metamask

    $415 (Avg Bid)
    $415 Oferta promedio
    24 ofertas

    Necesito desarrollar un contrato inteligente en la Binance Smart Chain para la venta de NFTS de un juego blockchain que tendra su presale mediante una web. Los NFT'S deberan poder pagarse en BNB, para la finanziacion de la fase final de terminacion y salida del proyecto. Algo asi como pero ambientado en el metaverso futurista.

    $1534 (Avg Bid)
    $1534 Oferta promedio
    15 ofertas
    Crypto Whitepaper Writer 6 días left

    Hi, I need a professional cryptocurrecy white paper writer for our new crypto project. Please read my requirements. Requirements: 1. Professional writer 2. Need doc file and pdf file 3. Knowledge of cryptocurrecy like ethereum, binance smart chain, bitcoin 4. Should be able to show previous work 5. Could make changes as per requirements untill management team accept it. Happy bidding.

    $36 (Avg Bid)
    $36 Oferta promedio
    20 ofertas
    Defi development 6 días left

    I need pancakeswap development, bids with your reference works

    $3000 - $5000
    $3000 - $5000
    0 ofertas

    Hello, We are looking for someone with experience with Metaplex Candy Machine that can help us add Payment Distribution by percentage to smart contract We have a team of Designers, Developers and Founders and each one has a specific percentage they should be paid automatically from the mints. If you have experience send me a message Thx

    $160 (Avg Bid)
    $160 Oferta promedio
    11 ofertas
    Private ido In website 6 días left

    Hello need private ido frontend AND smartcontract with vesting AND presale claim Button example Dead líne 1 day

    $21 / hr (Avg Bid)
    $21 / hr Oferta promedio
    25 ofertas
    App/Webwallet 6 días left

    Hello, we are looking for developers with experience in app development as well as web wallet experience. It's about a Bitcoin Fork Blockchain with RPC Json. We already have a web wallet. But we still lack the mobile view for it. Which is based on Javascript. We also need wallet apps for Android and IOS where people can send and send their coins

    $2981 (Avg Bid)
    $2981 Oferta promedio
    38 ofertas

    Hi Our Development Team is Looking to Engage a Company about NFT Marketplace Development You are to write us a full NFT Marketplace where traders are able to buy and sell NFTS Using the our own Token we are based on BSC (BEP-20) So we are expecting the NFTs to be BEP721 once minted etc.. You are required to give us the source code upon completion of the project for further vetting and audit purpose You are not allowed to use our project as a demo in any case once we are live. You will not require upfront payment unless you have shown as the work is completed, your action of any kind of false advertising would result in termination of agreement, we are as development team has the final say in this matter, please don't claim you wrote the NFT Marketplace when you did not we will ch...

    $2029 (Avg Bid)
    $2029 Oferta promedio
    39 ofertas

    Hi, I am looking for an expert in Cardano network. Get any DEX related data. You need full understanding of how Cardano network works, how data is stored in blocks and how to get/query data from a node. and type CarDan0 in your bid. Do not apply if you don't know cardano!

    $660 (Avg Bid)
    $660 Oferta promedio
    12 ofertas
    NFT Developer 6 días left

    I need to develop NFT app to be developed on the ETH or BNB blockchain.

    $23 / hr (Avg Bid)
    $23 / hr Oferta promedio
    36 ofertas
    Cryptocurrency Exchange App 6 días left

    We are looking for a centralised mobile crypto exchange app where a person could add fiat money (In Indian Rupees) and buy or sell any of the 10 crypto tokens (Etherium, Bitcoin, Stellar, Tether, Ripple, BAT, Litecoin, Polkadot, Dogecoin, ChainLink, Chiliz, Tron, Cardano, Uniswap, EOS, Vechain, Storj, Maker, Compound, Matic and Solana). Features Required -: 1. Real-time charting of coin prices 2. A simple dashboard 3. Adding and withdrawal of fiat currency(INR) 4. Highly secured wallet system 5. Alerts 6. KYC If you can make a dex app with Fiat on ramp then it will be a big plus Frontend: React Native or Flutter Backend: Whatever stack you are comfortable in Also please only apply if it’s comfortable for you to develop in the given budget

    $3111 (Avg Bid)
    $3111 Oferta promedio
    9 ofertas
    Build My own NFT 6 días left

    I want to build my own NFT system. This project isn't big. But I want to have one. Can you help me?

    $1416 (Avg Bid)
    $1416 Oferta promedio
    9 ofertas

    I have some requirement which looks like you can fulfil here, the requirement are pretty straight forward. I need an experience here to work on NFT marketplace minting engine and DEX. Am using the BSC network; a common place to operate. Hoping to hear from you all soon. Regards!

    $634 (Avg Bid)
    $634 Oferta promedio
    21 ofertas

    Need react developer eith web3 integration

    $167 - $500
    $167 - $500
    4 ofertas

    We need a moderator with good English. You should know a lot about crypto and blockchain.

    $120 (Avg Bid)
    $120 Oferta promedio
    3 ofertas

    Hello, there. We are looking for a developer with blockchain/solidity experience for our long-term project who can help us to improve our staking platform. The project has already started and we are looking to grow our team even more. IMPORTANT - Before you send your proposal you should have: - At least 2 years of blockchain development experience - At least 1-year experience of staking development You MUST answer these questions when you are sending your offer: 1. Tell me more about your blockchain/solidity experience? 2. What staking development experience do you have? 3. How much do you want to be paid per month for a full-time(40 hours per week) contract? 4. What blockchain project you have worked on? Can you verify your work on them? 5. Send your GitHub link if you have one?

    $39 / hr (Avg Bid)
    $39 / hr Oferta promedio
    22 ofertas

    Job Description: 1. Collect cryptocurrency project information through multiple channels and provide trading strategies (short-term investing is preferred); 2. Share profit-making resources and information in the cryptocurrency market and provide ideas on improving profitability; 3. Guide and formulate profitable investment strategies; 4. Provide valuable trading strategies and share insider information as references. Qualifications: 1. Experience in cryptocurrency exchanges is preferred; 2. Master different types and transaction-related information, such as early-stage cryptocurrency projects, product upgrades, community popularity, data analytics, online cryptocurrency exchanges, etc. ; 3. Economics, computer science, information security and engineering related disciplines, bac...

    $609 (Avg Bid)
    $609 Oferta promedio
    12 ofertas
    I need a Blockchain Developer 6 días left

    I want to make a swap dex based on Elrond Blockchain and Maiar dEX

    $1832 (Avg Bid)
    $1832 Oferta promedio
    36 ofertas
    Fantom Fork 6 días left

    I need a Fantom fork with block explorer(good-looking explorer along with charts), Web3 APIs, Documentation, Mainnet Live.

    $6200 (Avg Bid)
    $6200 Oferta promedio
    5 ofertas

    TOKEN FEATURES o Defi NFT Metaverse Project o Binance Smart Chain o There will be no token pre-sales on our own website. o Whitelist will be done for token. o ICO will be done on launchpads, IDO will be done PancakeSwap v2 o ICO price will be 1 LASM = 0,05 USD o Only 15% of tokens will be on ICO sale o Tokens sold in ICO will remain locked for 3 months. o 40% of total token amount will be locked for 2 years o NFT items will be minted on our own website. (metamask wallet connection) o Minted NFT items can be sold on the 3rd party NFT marketplace. Also NFT items can be bought and sold in the LasMeta marketplace. o NFT Pre-sale will be done for 666 Whitelisted address and mint limit is 1 qty per address. NFT mint price is 0,15 BNB for Pre-sale o In public NFT sale, mint limit is 3 qty per t...

    $719 (Avg Bid)
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    21 ofertas
    i need an expert in NFTs 6 días left

    i need an expert in NFTs to make smart contract for my arts or tokens

    $168 (Avg Bid)
    $168 Oferta promedio
    6 ofertas
    Block chain developer 6 días left

    Needing a coin made on BSC Tokenomics and inflation and rewards for long time holders. Please give details and links to other projects you’ve worked on.

    $566 (Avg Bid)
    $566 Oferta promedio
    19 ofertas

    a software that allows to send bitcoin fakes on the blockchain networks, bitcoins can stay in the wallet for at maximum 60 days before being rejected by blockchain and finally disappear into the wallet if you don’t have hash rate, but with hash rate that can stay for unlimited time. -Bitcoin core or blockchain keys options -Defined the time that the transaction can remain in the wallet -Defined the charges of the blockchain networks for a quick confirmation -VPN and TOR options included with proxy -Can check the blockchain address before transaction -Can send maximum 100BTC -Transaction can get full confirmation -Support all wallet -Segwit and legacy address – 100% confirmed transaction -The transaction fee is “max”, ie “priority” for quick confirmati...

    $644 (Avg Bid)
    $644 Oferta promedio
    9 ofertas

    I am looking for a front-running and sniping program for Uniswap and Pancakeswap. Its job will be to snap up a token as soon as they are launched on Uniswap / Pancakeswap and gain liquidity (sniping), along with front-running transactions after launch. Preference will be for someone who has already built it before. Will share details with shortlisted freelancers.

    $1415 (Avg Bid)
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    13 ofertas

    Hello, I am looking for someone with great experience in solidity, web3 and JavaScript to build a smart contract bot for the binance smart chain. Meaning a bot that will buy and sell tokens (usually newly listed tokens) but will do so using smart contract(s) instead of nodejs or python to interface with the pancakeswap router. Ina nutshell, the smart contract is doing the actual buying and selling. The client (bot) will do the prepping and reading pending and sending tx. We can discuss the actual designs and feature after it's been concluded that you are a good fit. Please let me know previous Blockchain experience and if you have done smthg similar. Thank you,

    $765 (Avg Bid)
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    26 ofertas

    i want to create a token on SOLANA i have all the tokenomics, symbol etc. i want this token to be done within 2 days everything was ready on cardano but shifting to solana

    $542 (Avg Bid)
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    7 ofertas
    Cryptocurrency protocol 6 días left

    Hello, I am looking for a blockchain developer to help me create a protocol using nfts.

    $539 (Avg Bid)
    $539 Oferta promedio
    14 ofertas

    Responsibilities: 1. Collect cryptocurrency project information through multiple channels and provide trading strategies (preferably short-term investment) 2. Share high-end resources and information in the cryptocurrency market and provide profitable ideas 3. Guide and formulate healthy investment portfolio 4. Export valuable trading strategies and share industry internal references Requirements: 1. Experience in digital currency exchanges is preferred 2. Master different types and transaction-related information, such as early subscription of digital currency projects, product upgrades, community popularity, data explosion, digital currency online exchanges, etc. 3. Economics, computer, information security, software, network and other science and engineering majors, bachelor degree or ...

    $586 (Avg Bid)
    $586 Oferta promedio
    7 ofertas

    NFT project with unique utility, which I am unaware if possible or not.

    $1973 (Avg Bid)
    $1973 Oferta promedio
    34 ofertas

    I would potentially like to work on a blockchain project with you. I require an NFT market place with its own token that (We can discuss further details on this). Should have complete UI, backend, buy, sell and auction functionalities. Metamask, Trust wallet integration. Have customizable user profiles, the ability to like NFTS. Should be scalable etc. (we can discuss more details on this, based on if we reach a consensus regarding your rates) We can use opensea or rarible as examples, but you get the basic idea.

    $3038 (Avg Bid)
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    52 ofertas
    Marketplace for a game 6 días left

    Hello need marketplace with my game AND mint nft with the items on game .. please only expert developer have múltiple task

    $30 / hr (Avg Bid)
    $30 / hr Oferta promedio
    41 ofertas
    Blockchain game 6 días left

    I am looking for a full-stack engineer that helps us to develop a Metaverse sandbox game like Sandbox

    $19 / hr (Avg Bid)
    $19 / hr Oferta promedio
    23 ofertas

    I need a blockchain developer or coder to build me a smart contract that would use a flash loan to do arbitrage between crypto exchanges. I'm not sure if a flashloan can be done for arbitrage between centralized crypto exchanges. I'm looking to do a large scale arbtitrage flashloan. Let me know if you can help. Thank you.

    $18 (Avg Bid)
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    5 ofertas

    We have developed new website but need to connect wallets such as metamask, phantom and so on. Please check above URL and put "Blockchain expert" at the top of the bid.

    $1040 (Avg Bid)
    $1040 Oferta promedio
    10 ofertas

    Our team is interested in developing our first NFT project. The ideas are similar to existing nft projects and the scope of this work will be to build out the website with minting capabilities- utilized ERC-721 to deploy the tokens, link the artwork to the smart contract and anything in between. You should have previous NFT project development experience. Familiar with smart contracts, general blockchain, webdevelopment, IPFS. Looking forward to hearing back and working with you. Thanks

    $24 / hr (Avg Bid)
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    Heey im looking for a bot developer who can help us do a bot for deriv and which we shall be selling to our users. we have over 800 users who already want a bot with high winning rate above 90% no matter the strategy. and make a decent profit of approx 10% per trade. We want the bot to be sold as a package to our users from our website where they sign up get all training materials and get to buy the bot. The bot to be subscription based and can only be used for one account

    $1525 (Avg Bid)
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    7 ofertas

    Looking for a Solana developer who can create and code an Olympus DAO Fork on Solana.

    $17473 (Avg Bid)
    $17473 Oferta promedio
    19 ofertas

    Hello! We are working on building a Social Media app on Blockchain technology. Posting the opening here to find someone from South India with whom we can understand the technology and work on implementing it to our app.

    $17 / hr (Avg Bid)
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    2 ofertas

    We are a worldwide company looking for an experienced cryptocurrency analyst. Our foundation will provide legal and medical assistance to the population and help mitigate Covid-19 consequences; In such a way that the people can return to Normal Life. Currently, we are looking for an experienced cryptocurrency analyst to start as a freelancer with ample opportunity to evolve into a Cryptocurrency Specialist role. Qualifications ●1-2 years of work experience with at least 1 year of cryptocurrency experience ●Good knowledge of the crypto sector ●Compulsory knowledge of English ●Desirable (but not required): knowledge of Spanish ●Experience working remotely ●Gather and provide feedback to the foundation team on how we could improve ●Experience working with a globally distributed team ●Projec...

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    In search of a senior product manager with blockchain experience who can design, develop and prepare a product development plan for a web 3.0 product in the NFT space.

    $50 / hr (Avg Bid)
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    I am interested in starting to mine cryptocurrency and I require someone to guide me through the setup. My machine is HP Elite 8300 SFF Quad Core i7-3770 3.4GHz 16GB 256GB SSD + 1000GB HDD DVD WiFi Windows 10 Professional Desktop PC Computer. It will be dedicated to mining only. I want to set up the machine on the 6th Dec. I want to mine Eth, Zcash, Litecoin, and BTC or similar coins. I'm not sure the limit of the machine so perhaps only 2-3 coins could be achievable. I would prefer a package/GUI that allows me to monitor. Example Awesome Miner, BetterHash etc.

    $170 (Avg Bid)
    $170 Oferta promedio
    6 ofertas

    We are having some troubles with the Wonderland dAPP contracts in a fork we are doing. The contracts are no different than wonderland, just the name changes. You MUST have experience with Wonderland or at least Olympus DAO contracts

    $50 / hr (Avg Bid)
    $50 / hr Oferta promedio
    9 ofertas

    Hello there our company needs a Blockchain engineer and a Game developer in Turkey. it can be full time/part time. tell me if you are interested

    $50 / hr (Avg Bid)
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    11 ofertas
    Build Solana Token 5 días left

    I am looking for someone to setup a Solana token for me.

    $154 (Avg Bid)
    $154 Oferta promedio
    10 ofertas