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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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    34 jobs found, pricing in USD

    I want to develop virtual currencies like Bitcoin. I want proven sources that have been developed. (Full Solution)

    $14778 (Avg Bid)
    $14778 Avg Bid
    23 bids

    Hi my company is about to start an ICO within 2 weeks (30th of November 2018) I need to list my ICO on token exchange platforms, such as - [login to view URL] - [login to view URL] - [login to view URL] - [login to view URL] - [login to view URL] - [login to view URL] I need support to do this, with a special attention over the issue of KYC and AML

    $4160 (Avg Bid)
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    9 bids

    I want to start a company for ASIC mining chips...need engineers and software developers.

    $1684 (Avg Bid)
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    10 bids

    I am looking for someone who can come up with an idea to increase the trading volume on a cryptocurrency exchange.

    $130 (Avg Bid)
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    6 bids

    I need bitcoin mining hardware with very TH per hour

    $6409 (Avg Bid)
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    15 bids

    I want to develop a proof of stake cryptocurrency with masternode probably a fork of PIVX including a qt wallet and develop an API for merchant to receive payments.

    $628 (Avg Bid)
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    9 bids

    Female Programmer is needed for a block chain App project more info will be given after a short interview on chat, email, Skype call

    $1312 (Avg Bid)
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    4 bids

    We are looking to purchase source code for an ICO platform. We are not interested in developing a platform ourselfes, we just want to buy source code for a platform, that is already finished and fully functional.

    $1372 (Avg Bid)
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    28 bids
    Master Node Complete Project! 5 days left
    VERIFIED

    Master node coin Developer! I'm looking blockchain developer who can fork DASH. You must have to have experience! Submit your previous project link! Without a link, I won't reply to your message whatever you submit!

    $953 (Avg Bid)
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    15 bids

    I need some Python developer experience with CCXT to help me finish automatic buy of my arbitrage cryptocurrency bot and speed it 40%.

    $140 (Avg Bid)
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    2 bids

    I'd like to build a trading engine with using REST API. These are the optional api service what I am thinking of. - [login to view URL] - [login to view URL] - [login to view URL] I wish to develop a trade engine based on rest api preferrably, I have to develop and plug/play existing module to existing backend system. Trading Engine Specs - Node.js as api server - Mongo as database Pleas...

    $478 (Avg Bid)
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    15 bids

    I need a develop to develop a cryptocurrency exchange website for me details will be sent to you via inbox

    $734 (Avg Bid)
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    29 bids

    We are looking for someone to create an API similar to below: [login to view URL] The API will be updated every second to ensure the correct data is passed to coinmarketcap. - PHP and Laravel experience needed - Bitbucket experience necessary, you will need to use git commands - Experience with coinmarketcap integration - Sample API creation (for bitcoin exchange) - You will need to provide you ...

    $157 (Avg Bid)
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    15 bids

    I need a vendor shop that uses PGP encryption, bitcoin block chain. I can list items for sale and people may purchase via bitcoin. Then host this on the tor where i can enter onion URL and access website. Admin features and client feature aswell.

    $243 (Avg Bid)
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    14 bids

    I've been tasked with writing a detailed piece for a major online publication on Bitcoin and cryptocurrency users, and am seeking two current users of Bitcoin for interview. Pay is fixed at 100USD via Freelancer for successful candidates. Interview is in three parts; 1) Qualifying questions 2) Preliminary discussion 3) Main interview task Questions will include ones similar to this; Do you...

    $137 (Avg Bid)
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    14 bids

    I want to build smart contract of erc 20 token with all pre mined token.

    $1433 (Avg Bid)
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    11 bids

    The PoC is already developed for a healthcare organisation, the authority of data provided by the patient is to be set. Only who has worked on Hyperledger fabric shall bid.

    $31 (Avg Bid)
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    1 bids
    Mining machine 3 days left

    from Antminer A3 to ObeliskSC1 firmware version update , or A3 to Lyra or quirk or Scrypt , as successful to do if you can than please do as soon as possible

    $9166 (Avg Bid)
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    2 bids
    Mining machine 3 days left

    from Antminer A3 to ObeliskSC1 firmware version update , or A3 to Lyra or quirk or Scrypt , as successful to do if you can than please do as soon as possible

    $5472 (Avg Bid)
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    4 bids

    I need a fully secure Cryptocurrency exchange open for customers in India with a few currencies already listed on it and should be equipped with full KYC.

    $673 (Avg Bid)
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    16 bids

    Looking for a core wallet system for Ethereum, XRP, and ERC token system. The wallet will need to generate new address for users and it must be installed and tested correctly with no security flaws. It would be preferred if you know C++. and have solid security background.

    $432 (Avg Bid)
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    13 bids

    The requirements are been attached and bid only after reading the document ! The entire project is been already opensource where you need to run the opensource git and then customize few changes. *** Again Bid only those whom really can work on this ***

    $206 (Avg Bid)
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    8 bids

    Hi, I thus need only experts who have already with with mining pools ! The requirements are been attached and bid only after reading the document ! The entire project is been already opensource where you need to run the opensource git and then customize few changes. *** Again Bid only those whom really can work on this ***

    $18 / hr (Avg Bid)
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    7 bids
    Cryptocurrency Arbitrage Bot 2 days left
    VERIFIED

    I need some Python developer experience with CCXT to help me finish automatic buy of my arbitrage cryptocurrency bot.

    $53 / hr (Avg Bid)
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    19 bids

    I'm looking for DAG expert. will discuss more via FL.

    $1333 (Avg Bid)
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    8 bids

    I need someone to help with gitian builder. It keeps failing with an miniupnpc checksum error. I need someone to fix my code so that i dont get this error and to fix any other errors that i might get after the miniupnpnc thing.

    $23 (Avg Bid)
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    1 bids

    I know about cryptocurrency, but I am making no profit from it So I am in need of someone to teach me more about cryptocurrency Investments and al I need to know so as to make profit from it

    $739 (Avg Bid)
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    23 bids
    Develop a paper wallet generator 20 hours left
    VERIFIED

    We want to develop a paper wallet generator for use in Cryptoart ([login to view URL]). Specifically, we want to fork the code from [login to view URL], then slightly modify the results page to fit our needs. More information found here: [login to view URL]

    $1190 (Avg Bid)
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    27 bids

    Hello ! We are looking some one or company who can build us mobile app for both platforms android/ios. We are looking for simple product thats represents safe and easy mobile application of ethereum wallet similar to imToken ( check if you can) Wallet should be able to transfer funds beetwen whole etherum network. People after sms verification can send and recevie ethereum and tokens. Admin can...

    $2608 (Avg Bid)
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    55 bids

    I need someone experienced in crytocurrency to suggest the best cryptocurrency to invest and that is the most profitable at the moment and to then guide me through the process of buying and selling the bitcoin or altcoin, depending on what you suggest. Im not wanting to get into cryptocurrency at the moment and to go too much into it, but just to buy and sell sone cryptocurrency. The amount im...

    $251 (Avg Bid)
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    9 bids
    Fresh cryptocurrency leads 5 hours left
    VERIFIED

    I am looking for a list of 1500 opt-in and fresh cryptocurrency leads from Australia, Singapore and New Zealand. Details wanted: First name Last name Mobile number/landline The list has to be fresh and opt in.

    $50 (Avg Bid)
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    7 bids
    Create a new Crypto Currency 41 days left
    VERIFIED

    Create a new Crypto Currency by Improving open source existing codes and ensure its reliability to connect to external environments, and implement sepcific specs and deliverables and high level security.

    $3426 - $5710
    Featured Sealed NDA
    $3426 - $5710
    58 bids

    Quisiera Vender mi proyecto ya Finalizado de una App que ayuda a vender o comprar BTC ya Operativo envia Notificaciones en base de los parametros que se le coloquen, Solo necesito saber si hay alguna persona interesada para Venderlo o Asociarnos.. Es importante señalar que este Sistema ya esta en uso Por un grupo de Trader lo cuales comprar suscripcion por el uso

    $438 (Avg Bid)
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    4 bids

    Hola, deseo conectar la Api de localcitcoin a mi página web, que esta hecha en wordpress, deseo que sólo yo pueda publicar avisos de compra y venta a mis clientes, me gustaría que el diseño de la Api quedara con los colores que ya cuenta mi sitio web.

    $490 (Avg Bid)
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    13 bids

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