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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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    22 робіт знайдено, ціни вказані в USD

    There is a set of testers of the new cryptocurrency cashbаck service We are recruiting people who should try out our new service, Cryptokeshbek. All beta test participants will receive $ 500 in Bitcоins for the test. If you have accounts on Blockchain, Binance, EXMO, Huobi, Coinbase. We invite you to cooperate. Our main tasks are to check the stability of the service, and if possible identify bu...

    $375 (Avg Bid)
    $375 Сер. заявка
    2 заявки
    Edits to a Laravel Script 6 дні(-в) left

    Looking for a experienced Laravel and Cryptocurrency guru. To help us edit a Laravel eCommerce site. - Need to have experience with bitcoin,litcoin,monero,bcash payment gateways & JSON RPC

    $1164 (Avg Bid)
    $1164 Сер. заявка
    41 заявки

    I need a Bitcoin/Litecoin Lucky Numbers script implemented into my eCommerce market.

    $532 (Avg Bid)
    $532 Сер. заявка
    15 заявки
    create a cryptocurrency blockchain 6 дні(-в) left
    ПІДТВЕРДЖЕНО

    quiero crear un algoritmo de criptomoneda

    $1275 (Avg Bid)
    $1275 Сер. заявка
    15 заявки
    BTC seller required 6 дні(-в) left

    we required BTC seller for project who have experience in this and can easily manage everything.

    $50 / hr (Avg Bid)
    $50 / hr Сер. заявка
    3 заявки
    Bitcoin invest and double your coin site 6 дні(-в) left
    ПІДТВЕРДЖЕНО

    Hi; Need Bitcoin invest and double your coin site : Account Deposit Withdraw Earning History Referrals Edit Account Home About Us Faq Paid Out Support Log OutAccount Regards

    $579 (Avg Bid)
    $579 Сер. заявка
    29 заявки

    A set of new beta testers comes to a new cryptocurrency exchange, everyone can participate in the absolute, even without experience. All beta participants will receive $ 500 in their balance for trading bitcoins. For each error we find, we pay 500 dollars.

    $222 (Avg Bid)
    $222 Сер. заявка
    6 заявки
    Crypto Exchanges data feed 6 дні(-в) left
    ПІДТВЕРДЖЕНО

    Im an active crypto trader and im in the need of a tool in order to enchance my trading. Basically i need to take data from two different exchanges (orderbook, orders, balance, position) using API. Both exchanges have API documentation. The most important thing about this Project is the speed, i need near 0 latency and no delay between the exchanges and the server. I need someone who can give me a...

    $43 / hr (Avg Bid)
    $43 / hr Сер. заявка
    26 заявки

    We need to test the operation of the ERC20 (CRYPTOCASHBACK) CSSBACK token. We invite specialists on working with smart contracts on the ethereum and blockchain networks. 1. It is necessary to conduct an audit. 2. Check the network stability. (make several transactions with our tokens within the ERC20 network. 3. Identify network vulnerabilities, if any. For more information send your applications ...

    $554 (Avg Bid)
    $554 Сер. заявка
    12 заявки
    Install bitexchange.systems cryptocurrency exchange 4 дні(-в) left
    ПІДТВЕРДЖЕНО

    I need someone who can install complete [увійдіть, щоб побачити URL] on my AWS server. You must have to have past experience about installing exchange. Exchange Liquidity Referral Multi language HOT/Cold Wallet erc20

    $239 (Avg Bid)
    $239 Сер. заявка
    12 заявки
    Cryptocurrency Exchange Like - Binance 4 дні(-в) left
    ПІДТВЕРДЖЕНО

    Looking for long term developer team for the new project. 1. Liquidity 2. 5 crypto Market - BTC,ETH,LTC,USDS, XRP 3. 20 ERC20 coins to be listed 4. New dark and light UI design (binance basic) 5. Admin Panel must have the listing function and adding market pair function. 6. Referral function needs to add and there should be manage function like 30%,50%80% as per admin mind. My budget is 200$ now...

    $1257 (Avg Bid)
    $1257 Сер. заявка
    20 заявки
    Ready to use Cryptocurrency Exchange 4 дні(-в) left
    ПІДТВЕРДЖЕНО

    Before we move on please show me a demo of your work - centralized exchange platforms! We are looking perfect cryptocurrency exchange which you developed before so we can buy and launch by tomorrow!

    $725 (Avg Bid)
    $725 Сер. заявка
    12 заявки

    The task is to produce a working .exe build using [увійдіть, щоб побачити URL] this is a altcoin forked from litecoin 0.15 source code, this .exe must be executable from any windows system We will also need the step you followed to build the wallet

    $115 (Avg Bid)
    $115 Сер. заявка
    8 заявки
    Cryptocurrency Trading Simulator 4 дні(-в) left
    ПІДТВЕРДЖЕНО

    We are building a cryptocurrency analytics site and would like to integrate a crypto trading simulator as additional functionality within the site. This will need to be integrated into the current site architecture as well as our CRM system, and will also be tied to weekly and monthly tournaments where the winners receive real crypto prizes. Current site built with React and Gatsby.

    $50 / hr (Avg Bid)
    $50 / hr Сер. заявка
    26 заявки

    need to create concurrency trading website with payment gateway with btc wallet.

    $1974 (Avg Bid)
    $1974 Сер. заявка
    8 заявки
    security of contract 2 дні(-в) left
    ПІДТВЕРДЖЕНО

    [увійдіть, щоб побачити URL] Hi, I want to have a security report form "Oyente". it should be done in 2-3 hours it is very simple because the contract in very simple. all u do is to follow the steps in the shared link. Max budget is 10 USD

    $12 (Avg Bid)
    $12 Сер. заявка
    5 заявки

    Building community for a cryptocurrency exchange. Building karma on reddit, followers on twitter and telegram, points on bitcointalk etc.

    $317 (Avg Bid)
    $317 Сер. заявка
    7 заявки

    I need a new website. I already have a design, I just need you to build it.I need someone that understands cryptocurrency, blockchain, specifically bitboss tokenized protocol that runs on Bitcoin sv.

    $1185 (Avg Bid)
    $1185 Сер. заявка
    21 заявки

    I am going to build a website to integrate with etherum blockchain. You must have rich experience with etherum, erc20token. This project must be finished in 10 days. Please bid if you are definitely confident in this field and add *blockchain expert in your proposal at first. Thanks.

    $1513 (Avg Bid)
    $1513 Сер. заявка
    22 заявки

    I'm looking for a program to perform multi-sign BTC and/or ECR20 token transactions offline and online It must support signing via hardware such as Trezor and Nano Ledger and AWS CloudHSM Java language preferred

    $181 (Avg Bid)
    $181 Сер. заявка
    3 заявки
    ETH, BTC deposit system 20 годин(-и) left
    ПІДТВЕРДЖЕНО

    Hi, I want to talk to someone expert who has done the deposit system for ETH, BTC coins, I want to know the whole process from A TO Z that one developer can implement the deposit system in web application. Please only bid if you have developer the deposit system earlier, don't waste my and your time for the money.

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

    I am looking for engineer who can work with our team to develop the Bitcoin website... Must be good at Blockchain and website and DB.... Also, have got a good knowledge of AWS.

    $750 - $1500
    Прихований
    $750 - $1500
    57 заявки