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Bitcoin is a crypto currency, with the creation and the transfer of the bitcoins being based on a protocol that does not depend on the central authority. The coins can be transferred through computers or through smartphones and related devices, without the necessity of having a financial institution as an intermediate. This concept was established by Satoshi Nakamoto in 2008 and it was geared towards the world of electronic cash systems. If you understand more about this topic on a professional level, then you have a better chance to enjoy the advantages of being a freelancer at Freelancer.com.

Bitcoin has its own technical part that needs to be addressed by professionals. If you are one of them, then you should be on a platform that ensures the consistency of job posting by clients. When working as a bitcoin freelancer at Freelancer.com, you will have access to many of the jobs posted by clients from all over the world and bid on those that are within your professional level. There is too much to enjoy while working at the leading freelancer platform online, including getting paid at rates that your services deserve, giving you the encouragement you need to keep on working on more Bitcoin projects.

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    91 робіт знайдено, ціни вказані в USD
    Help in deploying simple altcoin 6 дні(-в) left
    ПІДТВЕРДЖЕНО

    * We will have to manually change the pictures in unelmacoin/share/pixmaps. * We will need change the checkpoints in unelmacoin/src/chainparams.cpp. * We will need to add a seed node and add it to src/[увійдіть, щоб побачити URL] as well. * Currently all seeds are getting disabled.

    $10 - $30
    $10 - $30
    0 заявки
    help with integration of btc in my delphi software 6 дні(-в) left
    ПІДТВЕРДЖЕНО

    Need help with the payment gateway for selling products from my Delphi application

    $118 (Avg Bid)
    $118 Сер. заявка
    4 заявки
    Create a new cryptocurrency 6 дні(-в) left
    ПІДТВЕРДЖЕНО

    I would like to create new two cryptocurrencies there is no need to create a new blockchain there are a lot of blockchains ready and a lot of networks to use out there. so there is no need to create everything from scratch. the two cryptocurrencies should have APIs ready so I can use the API to send or receive the cryptocurrencies over the network between the wallets. u can check coinbase API for...

    $221 (Avg Bid)
    $221 Сер. заявка
    6 заявки
    TOKENIZATION NFT DEVELOPMENT, LAUNCH TOKEN 6 дні(-в) left
    ПІДТВЕРДЖЕНО

    For this project you need to be an expert level C and Java programmer, blockchain developer in the NFT space (DeFi, Binance, Ethereum 2.0 etc.), technical aptitude and a minimum of two Android mobile phones to test and run the app which is the basis for this project, as it both creates art works and saves or sends encrypted messages as artistic images We’re preparing to launch (now in Beta)...

    $1003 (Avg Bid)
    $1003 Сер. заявка
    4 заявки
    yieldfarms 6 дні(-в) left

    Create one yieldfarms site. e.g. [увійдіть, щоб побачити URL]

    $4000 (Avg Bid)
    $4000 Сер. заявка
    1 заявки
    p2p bitcoin exchange website 6 дні(-в) left
    ПІДТВЕРДЖЕНО

    P2P Exchanges make Buyers find Sellers. Its like a Classified ads site, but only for bitcoins. These are individuals trading back and forth with other individuals. Essentially, the sellers are setting their own price and what types of payments they will accept. Many accept PayPal, Bank Transfers, Credit Cards and even cold, hard cash. All payments are handled OFF site. Users only have the option ...

    $932 (Avg Bid)
    $932 Сер. заявка
    9 заявки
    English Announcer for crypto domain 6 дні(-в) left
    ПІДТВЕРДЖЕНО

    Hello, We looking for to hire an person who chat and speack english, for write and prepare some announcement on social network in english language. You need to know crypto currency domaine and have an very good english. Your job will be to write good text for our announcement on social network. Thx you.

    $28 / hr (Avg Bid)
    $28 / hr Сер. заявка
    9 заявки

    ALARANIWAOO!! we are looking for the token contract, we're looking at creating an ecosystem similar to Uranium. It's two tokens, an AMM, and a bridge from token A to token B. Also including the general yield-farming structure. We are also looking at adding vaults for auto-compounding features. The NFTs would be much later down the road. plz don't waste my time, if you know you ca...

    $2102 (Avg Bid)
    $2102 Сер. заявка
    9 заявки
    smart Contract -- 2 6 дні(-в) left

    Can you do IEEE projects on Blockchain using Smart Contract and Supply Chain?

    $5000 - $10000
    $5000 - $10000
    0 заявки
    smart Contract 6 дні(-в) left

    Can you do IEEE projects on Blockchain using Smart Contract and Supply Chain?

    $5000 - $10000
    $5000 - $10000
    0 заявки
    BUILD CRYPTO COIN 6 дні(-в) left

    I need a new website. I need you to design and build it.

    $431 (Avg Bid)
    $431 Сер. заявка
    11 заявки
    Simple BitCoin Miner 6 дні(-в) left

    Need to demonstrate an actual bitcoin miner software that can mine actual bitcoin. 1. User will specific their private key for payment. 2. Software will load nonce guesses from a csv file. 3. If nonce guess is correct, user should receive the actual bitcoin reward. Developer who can successfully complete and demonstrate this project will be offered future bitcoin projects for an actual large sca...

    $700 (Avg Bid)
    $700 Сер. заявка
    2 заявки
    Blockchain Developing skills 6 дні(-в) left
    ПІДТВЕРДЖЕНО

    Hello, I am mechanical engineering student and I have entered the crypto world recently. I am looking for someone who can teach me blockchain developing and how to create a token and Dapp from A to Z : * Blockchain coin forking, Smart Contract for DApp * Cryptocurrency Exchange System, DeFi, * Wallet for web and mobile * FIX (Financial Information eXchange) Only patient professional with reason...

    $10 (Avg Bid)
    $10 Сер. заявка
    1 заявки
    Bitcoin mining help 6 дні(-в) left
    ПІДТВЕРДЖЕНО

    I need help with someone to mine Bitcoin

    $887 (Avg Bid)
    $887 Сер. заявка
    12 заявки
    BSC - Binance Smart Contract Developer 5 дні(-в) left
    ПІДТВЕРДЖЕНО

    Hello, We looking for an senior developer who know and work with smart contract on binance smart chain ( bcs ). We will create some smart contract and manage transactions. We can hire you on full time ( monday to friday ) and we can hire you right now. Thank you.

    $14 / hr (Avg Bid)
    $14 / hr Сер. заявка
    9 заявки
    Cardano NFT project 5 дні(-в) left
    ПІДТВЕРДЖЕНО

    We are developing an NFT series on Cardano. We are looking for an experienced dev who is passionate about Cardano and understands the current, pre-smart contract minting process. We have the concept and art finished, just looking a partner to help with the tech.

    $900 (Avg Bid)
    $900 Сер. заявка
    5 заявки
    I need a cryptocurrency created 5 дні(-в) left
    ПІДТВЕРДЖЕНО

    We require a usable, trade-able and new Cryptocurrency coin created this will be from scratch so will to go back and forth to talk about the in and out requirements etc

    $271 (Avg Bid)
    $271 Сер. заявка
    4 заявки

    My project is to create a platform in order to exchange cryptocurrencies quickly, securely with any devises.

    $161 (Avg Bid)
    $161 Сер. заявка
    2 заявки
    Coinbase and Binance conversations and help 5 дні(-в) left
    ПІДТВЕРДЖЕНО

    I would like to find someone who has expertise in cryptocurrencies. Someone who is confident in coindbase and binance.

    $14 - $28
    $14 - $28
    0 заявки
    Trophy icon A Contest For Ideas. 9 дні(-в) left

    **************READ BEFORE YOU BIDDDDDDDD!!!!!!!!!!!!!!!! IDEAS NOT DESIGN!!!!!!!!!!!! THIS IS NOT A DESIGN CONTEST!!!!!!!!!!!!!!!!!!! ITS A CONTEST FOR IDEAS!!!!!!!!!!!!!!!!!!!!!!!!!!!!******************************** GENERAL INFO: I am in the process of building a blockchain-based token. SCOPE OF THE PROJECT: I need one or multiple IDEAS for a crypto-token. My scope is very simple, I want to...

    $111 (Avg Bid)
    Гарантований Прихований
    $111
    1 робіт
    Start a cryptocurrency 5 дні(-в) left
    ПІДТВЕРДЖЕНО

    I want to start my own cryptocurrency using the same infrastructure as bitcoin. The only difference is that I want to be able to be able to set the length (difficulty) of the code the computers have to mine and be able to change it. So if its set to 100 characters its 100 length - but I should be able to change how long the length is aswell by an override which updates everyones. I also need my o...

    $7167 (Avg Bid)
    $7167 Сер. заявка
    5 заявки
    Pancake frontend developer. 5 дні(-в) left
    ПІДТВЕРДЖЕНО

    Our team is forking pancake. To speed up, we are in agreement with adding one more frontend developer. If you have some experience in pancake forking , feel free to apply. Thanks.

    $14 / hr (Avg Bid)
    $14 / hr Сер. заявка
    10 заявки
    Create a crypto trading bot with reporting in Telegram 5 дні(-в) left
    ПІДТВЕРДЖЕНО

    Hi, The goal here is that a working crypto trading bot is delivered that works on one of these exchanges: Bitfinex, FTX, Binance. The bot will work through the API of these exchanges. Every trade will be placed in a Telegram group. We are able to choose between strategies or we can choose multiple indicators (we need help with making this as profitable as possible). Every trade has a 'plan...

    $1272 (Avg Bid)
    $1272 Сер. заявка
    10 заявки
    Experienced dev to help fix MiningPool/Blockchain 5 дні(-в) left
    ПІДТВЕРДЖЕНО

    The mining pool is generating blocks, but is not paying out automatic rewards to miners We need an experienced blockchain dev to amend our existing mining pool code - experienced blockchain dev - experience with Mining Pools, JavaScript, node.js - Codebase: DASH + algo KawPow *** We need someone who can start right away, and fix it fast! ***

    $763 (Avg Bid)
    $763 Сер. заявка
    11 заявки

    Full details will be given to the winning bidder but basically you will be given a document of 4000000 addresses and you will find a way to get the pubkey for each and have it formatted as: x= y=

    $386 (Avg Bid)
    $386 Сер. заявка
    5 заявки

    Hello i want to start a mlm business in tron coin . For that i need a tron smart contract and a dapp website i want tron / eth or Binance Smart Chain, would be great if finance smart chain is possible!

    $842 (Avg Bid)
    $842 Сер. заявка
    15 заявки
    Bitcoin payment gateways 5 дні(-в) left

    my Bitcoin payment gateways to receive all payment directly to my electrum wallet and set up automatic withdrawals with pay to many options in bulk payment from my system to electrum when user request to exchange bitcoin!

    $20 (Avg Bid)
    $20 Сер. заявка
    1 заявки
    Binance API - Buy/Sell order sender to multliple accounts 5 дні(-в) left
    ПІДТВЕРДЖЕНО

    Looking for a FULLSTACK developer with experience with the BINANCE API. I don`t know which technology is best, but probably PHP or Python. I want a cryptocurrency buy/sell order sender for multiple connected client accounts. All of them on Binance API. Only spot trading. All orders are market orders. I need to be able to choose my portfolio (which coins will be part and percentage of the accoun...

    $1507 (Avg Bid)
    $1507 Сер. заявка
    14 заявки
    Write some Articles 5 дні(-в) left
    ПІДТВЕРДЖЕНО

    I need 4-5 "min read" article regarding cryptocurrency Vertcoin In the attached file there are some points to use and related links. I need something like an interesting, witty "story" easy to remember for a long time.

    $60 (Avg Bid)
    $60 Сер. заявка
    35 заявки
    Invest. Ethereum 4 дні(-в) left

    Dear, I'm thinking to start an investment in cryptocurrency. So i will need someone who can bring me ethereum this days. if you're interesting please contact me asap. Thank you

    $702 (Avg Bid)
    $702 Сер. заявка
    7 заявки

    WE APPRECIATE IF YOU READ BEST BEFORE YOU BID. OUR BUDGET IS FIXED. AND IF WE DEAL WITH A PROFESSIONAL THIS PROJECT SHOULD BE READY IN 30 MINUTES!!! ITS PURELY CONSULTANCY, ADVICE We are in the process of assessing the feasibility of building a crypto-token. This token shall have a few basic functions. We need consultancy and advice on what framework best suites our desired functionality. Thi...

    $177 (Avg Bid)
    Обраний
    $177 Сер. заявка
    5 заявки
    SMART CONTRACT 4 дні(-в) left

    Checking a smart contract for Yield Farming project!

    $231 (Avg Bid)
    $231 Сер. заявка
    9 заявки

    I am looking for a blockchain developer who is experienced with Bitcoin and C++. It will be the ongoing job (more than 1 year) if it goes well. Need to make some changes in existing blockchain that was created by forking Bitcoin. Need to start ASAP. Will share the details to the shortlisted candidates.

    $1220 (Avg Bid)
    $1220 Сер. заявка
    13 заявки
    Software for bitcoin flashing 4 дні(-в) left
    ПІДТВЕРДЖЕНО

    Mobile app project description BLOCKCHAIN BITCOIN FLASHING SOFTWARE REQUIREMENTS; I am looking for a developer who can develop BITCOIN Flashing software. With this software I will be able to do the following; 1. Should be able to work and upload with a bitcoin wallet having zero current balance. 2. Any uploaded bitcoins should be transferable up to five wallets (wallet to wallet). 3. The uploa...

    $836 (Avg Bid)
    $836 Сер. заявка
    7 заявки
    NFT Marketplace Website 4 дні(-в) left
    ПІДТВЕРДЖЕНО

    looking expert only for NFT Marketplace Website. let discuss over chat

    $3387 (Avg Bid)
    $3387 Сер. заявка
    6 заявки
    Blockchain Developer 4 дні(-в) left

    Looking for a Blockchain Developer to help build a project based on blockchain and eth.

    $47 / hr (Avg Bid)
    $47 / hr Сер. заявка
    18 заявки
    ICO whitepaper writing for P2P crypto exchange -- 2 4 дні(-в) left
    ПІДТВЕРДЖЕНО

    We need an EXPERIENCED ICO writer who can write an in-depth whitepaper for a P2P crypto exchange project. All HTML work completed and we have much related materials for you to use. Backend in [увійдіть, щоб побачити URL] is [увійдіть, щоб побачити URL] token has been created. Some requirements: [увійдіть, щоб побачити URL] be 30-40 pages (5000-7000 words) [увійдіть, щоб побачити URL] Charts ...

    $307 (Avg Bid)
    $307 Сер. заявка
    19 заявки

    We are looking for an experienced web designer/blockchain developer. Our team is looking to create a digital crypto wallet for people to store, buy/sell, and exchange cryptocurrency. We can explain further over a zoom call. We look forward to working with you.

    $531 (Avg Bid)
    $531 Сер. заявка
    4 заявки

    Need to build an defi site like pancakeswap. use Binance smart chain. include writing a smart contract. we need in 30-45 days. [увійдіть, щоб побачити URL]

    $4416 (Avg Bid)
    Угода про нерозголошення
    $4416 Сер. заявка
    6 заявки

    I need a new website. I need you to design and build it. (Blockchain)

    $1749 (Avg Bid)
    $1749 Сер. заявка
    50 заявки
    Ethereum mining pool -- 2 4 дні(-в) left
    ПІДТВЕРДЖЕНО

    Need someone to teach me to build an Ethereum mining pool on ubuntu.

    $30 - $250
    $30 - $250
    0 заявки

    The development consists in a Phyton development that interacts with the Binance API The program must: - Monitor the Balance in the Futures Balance of a Binance account. - Monitor the unrealized profits for the same account - If some event happens, must send a series of webhook messages must be sent to stop a series of bots, to "cool down" - The messages are like this: { "mess...

    $262 (Avg Bid)
    $262 Сер. заявка
    2 заявки
    Trade on Bitfinex 4 дні(-в) left
    ПІДТВЕРДЖЕНО

    I don't understand Bitfinex and need screenshare consulting of someone who actually understands it and can help my buy some Crypto

    $21 / hr (Avg Bid)
    $21 / hr Сер. заявка
    5 заявки
    Build me a cryptocurrency marketing/pr website 4 дні(-в) left
    ПІДТВЕРДЖЕНО

    Build me a cryptocurrency marketing website See: [увійдіть, щоб побачити URL] for examples

    $199 (Avg Bid)
    $199 Сер. заявка
    7 заявки
    Build me a cryptocurrency marketing website 4 дні(-в) left
    ПІДТВЕРДЖЕНО

    Build me a cryptocurrency marketing website See: [увійдіть, щоб побачити URL] for examples

    $902 (Avg Bid)
    $902 Сер. заявка
    18 заявки

    Signal Automation for both Web and iOS through web/app scraping. Buy and Sell Automation UI Creation

    $515 (Avg Bid)
    $515 Сер. заявка
    7 заявки
    Blockchain developer 3 дні(-в) left
    ПІДТВЕРДЖЕНО

    Hi, I'm looking for a blockchain developer who can help us to create our own tokens

    $50 / hr (Avg Bid)
    $50 / hr Сер. заявка
    6 заявки
    blockchain bsc defi token 3 дні(-в) left
    ПІДТВЕРДЖЕНО

    looking for a dev to write a contract on bsc chain ... he has to got experience with the tokenomics also and be able to launch the coin!

    $446 (Avg Bid)
    $446 Сер. заявка
    8 заявки

    Hello I need a code for my smart contract erc20 which allows trading and sending of tokens only for 10 selected wallets. After 18 months trading and sending should be fully available. I want to use justswap

    $433 (Avg Bid)
    $433 Сер. заявка
    3 заявки