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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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    29 робіт знайдено, ціни вказані в USD

    Hi there, I have a project has work completed 90%, But i need some updates on the project. It is in 3D and as Cryptocurrency like Bitcoin, I want to request for updating the Background text, (Digital Currency Blockchain Peer to Peer XXXXXXX PTC) and also change the color to Bitcoin, Please let me know if you can work it well. I'm willing to pay 40 USD for it.

    $57 (Avg Bid)
    $57 Сер. заявка
    7 заявки
    mining BTC production 2019 : 2025 6 дні(-в) left
    ПІДТВЕРДЖЕНО

    Hello, I want a simple mining calculator of BTC coin production built on known difficulty of BTC eruption rates from year 2019 to 2025 with variable hash rate input. Thank you

    $28 (Avg Bid)
    $28 Сер. заявка
    3 заявки
    Help to create Java Unit Test for blockchain project 6 дні(-в) left
    ПІДТВЕРДЖЕНО

    I am looking for help to create Java unit test for a project using Ethereum to send ETH. I use private chain in a closed environment but I have no idea how to get a transaction list of an address, while it’s easy to get it from Etherscan using testnet or mainnet.

    $533 (Avg Bid)
    $533 Сер. заявка
    17 заявки
    Online Payment Services website - credit cards and Bitcoin 5 дні(-в) left
    ПІДТВЕРДЖЕНО

    Dear freelancer, We need to build an antire payment gateway website for cryptocurrencies where all users and merchants could get paid, deposit, exchange their coins to FIAT money on their wallet and request payouts to their bank accounts or to their bitcoin address. Payments method is only by credit card or bitcoin. However, nothing is going to be provided by us. You have to do it all, includ...

    $9735 (Avg Bid)
    $9735 Сер. заявка
    46 заявки
    Arbitrage trading 5 дні(-в) left
    ПІДТВЕРДЖЕНО

    I'm looking for a man who is 100% worthy of arbitrage trading. I'm not looking for a beginner, but an experienced person. + reference

    $867 (Avg Bid)
    $867 Сер. заявка
    5 заявки

    We need help with automatically creating wallet, sending and receiving & querying balance of Bitcoin Cash using nodejs

    $873 (Avg Bid)
    $873 Сер. заявка
    7 заявки

    Hello I need a ready online dapp coin game.. like ETH game. I can give you full info in PM

    $2590 (Avg Bid)
    $2590 Сер. заявка
    18 заявки

    5 friends (Alice, Bob, Carol, Dave, and Emma) are participating in an egg-hunt game where they are looking for hidden plastic eggs. Each egg is worth a certain number of points, and the goal of the game is to accumulate one million points (or more). We would like a commitment scheme where each of the players can proof he/she has 1 million points from the eggs they found, while revealing zero knol...

    $108 (Avg Bid)
    $108 Сер. заявка
    6 заявки

    5 friends (Alice, Bob, Carol, Dave, and Emma) are participating in an egg-hunt game where they are looking for hidden plastic eggs. Each egg is worth a certain number of points, and the goal of the game is to accumulate one million points (or more). We would like a commitment scheme where each of the players can proof he/she has 1 million points from the eggs they found, while revealing zero knol...

    $69 (Avg Bid)
    $69 Сер. заявка
    1 заявки

    We are looking for blockchain developer who already created or have no problem creating a simple wallet with the following functions in the next 24 hours: Listing prices Sending coin Create addresses Receive incoming coins Query transaction logs We need at least 2 coins: btc and eth for the next 24 hours. If you are proficient in blockchain and interested, please quote.

    $20 / hr (Avg Bid)
    $20 / hr Сер. заявка
    21 заявки
    want to lunch our coin with our blockchain 4 дні(-в) left
    ПІДТВЕРДЖЕНО

    Hello, we want to create cryptocurrency with our own blockchain. so for that if any experience team which already make something like this. so please share your past work with description. more detail we share in chat. Thanks.

    $1045 (Avg Bid)
    $1045 Сер. заявка
    26 заявки
    Unique blockchain project. New coin with token features 4 дні(-в) left
    ПІДТВЕРДЖЕНО

    I want a new coin that enables users to create sub coins based on my blockchain. The result will be a coin that is compatible with my coins wallet. Any coin created from my chain will also be able to be viewed in stored in the main chains wallet. They can also crate their own wallet. Fees from transactions will be in the own coin not in main coin as with ethereum. When developing the coin they wil...

    $13649 (Avg Bid)
    $13649 Сер. заявка
    61 заявки
    Create an altcoin 4 дні(-в) left
    ПІДТВЕРДЖЕНО

    Please quote for creation of an alt coin with block

    $651 (Avg Bid)
    $651 Сер. заявка
    15 заявки

    I some Asic miners with 18 TH/s speed . I'm using popular pools but having problem with difficulties when it increases . I was wondering if there is anyway to increase the hash-rate with software based methods or if I make my own pool ?

    $436 (Avg Bid)
    $436 Сер. заявка
    5 заявки
    i need a person who can connect rpc of bitcoin to other server 3 дні(-в) left
    ПІДТВЕРДЖЕНО

    I need you to develop some software for me. I would like this software to be developed for Linux.

    $95 (Avg Bid)
    $95 Сер. заявка
    3 заявки
    revise my nodejs script related with cryptocoins 3 дні(-в) left
    ПІДТВЕРДЖЕНО

    I've a working script that can trade between cryptocoin exchanges. Developed with nuxt envoriment with nodejs-express working as a backend script. Script is working and doing its job well. I need some revisions for its recently added ordersize feature thats not working as expected. I also need some other features like inventory control. Looking for a developer that has an experience on both n...

    $488 (Avg Bid)
    $488 Сер. заявка
    21 заявки

    I need a senior blockchain developer i need to develop a crypto dapp game

    $861 (Avg Bid)
    $861 Сер. заявка
    7 заявки
    Marketing services 3 дні(-в) left
    ПІДТВЕРДЖЕНО

    General marketing services (article writing, blog posts, etc).

    $505 (Avg Bid)
    $505 Сер. заявка
    50 заявки
    Need POA Sokol Developer to Help Find Bug - Solidity 2 дні(-в) left
    ПІДТВЕРДЖЕНО

    Hey, i need someone who is familiar with POA sokol. To check my ethereum smart contract project and see why the reductions arent correct.

    $193 (Avg Bid)
    $193 Сер. заявка
    8 заявки
    Sell my FX/Bitcoin LEADS 2 дні(-в) left
    ПІДТВЕРДЖЕНО

    Looking for someone who has an experience in this field. These are potential prospects who showed interest in FOREX,STOCKS and BITCOIN. LEADS FROM AUSTRALIA,CANADA,UK,GERMANY

    $2142 (Avg Bid)
    $2142 Сер. заявка
    7 заявки

    I am looking for a Bitconnect script with the following features 1) Altcoin Web Wallet 2) Lending 3) Peer to peer Internal Exchange BTC - Altcoin 4) Referral Bonus - 3 Levels 5) Activating Registration by paying a nominal fee. Note: Please bid on the project if you have the readymade script with complete source code with you

    $377 (Avg Bid)
    $377 Сер. заявка
    7 заявки

    seeking a self-motivated individual who can provide a high-level of assistance. Candidate must possess cognitive thinking skills and ability to retain process and information Must be self-starter who is able to toggle back and forth from systems and tasks. American resident (citizen/non) preferably.

    $416 (Avg Bid)
    $416 Сер. заявка
    5 заявки

    Seeking a self-motivated individual who can provide a high-level of assistance. Candidate must possess cognitive thinking skills and ability to retain process and information Must be self-starter who is able to toggle back and forth from systems and tasks. Candidate must have a positive attitude and willingness to Learn.

    $462 (Avg Bid)
    $462 Сер. заявка
    8 заявки

    criar um site par ainvestimento em bitcoin, no qual o usuario tera lucro por hora/dia em cima do valor investido, sera feito pagamentos automaticos na carteira de bitcoin do mesmo, todo dia, site precisa ter um painel de API da [увійдіть, щоб побачити URL] para mostrar os depositos e pagamentos recentes no site. nao precisa de area do cliente.<br />site para referencia [увійдіть, щоб побачит...

    $200 (Avg Bid)
    $200 Сер. заявка
    5 заявки

    Hello, im looking to Receive by Autoview or Profilview alert from Tradingview by API request.

    $20 (Avg Bid)
    $20 Сер. заявка
    1 заявки

    Bitcoin Exchange Site. Who can build similar platform at low cost: [увійдіть, щоб побачити URL]

    $507 (Avg Bid)
    $507 Сер. заявка
    15 заявки

    Need a woodpress theme/UI built and integrated with a wordpress plugin [увійдіть, щоб побачити URL] [увійдіть, щоб побачити URL]@[увійдіть, щоб побачити URL]

    $143 (Avg Bid)
    $143 Сер. заявка
    40 заявки
    Write ANN project description for Bitcointalk (based on our WhitePaper) Закінчується left
    ПІДТВЕРДЖЕНО

    We're seeking someone who has already written ICO-related ANN documents for Bitcointalk, or similar online groups. The documents will need to follow all recommendations and guidelines outlined at [увійдіть, щоб побачити URL] Our WhitePaper, and ICO is ready - thus specs about the project/details will be available to you. We simply need someone who is experienced in writing an ANN on these ...

    $226 (Avg Bid)
    $226 Сер. заявка
    38 заявки
    Bitcoin tarzı coin sitesi 10 дні(-в) left
    ПІДТВЕРДЖЕНО

    My website which allows you to create your own currency like Bitcoin purchase and sell with wallet system can contact any of the existing admin panel customer panel etc. NOTE: I'm not looking for a freelancer. Bitcoin alım satım benzeri kendi para biriminizi oluşturup cüzdan sistemli alım satım yapmanızı saglayan web sitem mevcut admin paneli müşteri paneli vb hazır durumda isteye...

    $140 (Avg Bid)
    $140 Сер. заявка
    4 заявки