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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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    32 jobs found, pricing in USD

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

    $250 (Avg Bid)
    $250 Avg Bid
    1 bids

    We are in the home security alarm business. Similar to ADT and Brinks that has also expanded to include smart home technology such as controlling your lights, opening the door, raising the garage door and controlling the thermostat. The system now works by being installed DIY and is connected by wi-fi. There is a motion detector, window sensors and the option to have a video camera added. There ...

    $92 (Avg Bid)
    $92 Avg Bid
    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...

    $456 (Avg Bid)
    $456 Avg Bid
    12 bids

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

    $593 (Avg Bid)
    $593 Avg Bid
    22 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 ...

    $156 (Avg Bid)
    $156 Avg Bid
    10 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.

    $263 (Avg Bid)
    $263 Avg Bid
    11 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...

    $138 (Avg Bid)
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    12 bids

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

    $1512 (Avg Bid)
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    9 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 5 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)
    $9166 Avg Bid
    2 bids
    Mining machine 5 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)
    $5472 Avg Bid
    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.

    $718 (Avg Bid)
    $718 Avg Bid
    14 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)
    $432 Avg Bid
    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)
    $206 Avg Bid
    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)
    $18 / hr Avg Bid
    7 bids
    Cryptocurrency Arbitrage Bot 4 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)
    $53 / hr Avg Bid
    19 bids

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

    $1333 (Avg Bid)
    $1333 Avg Bid
    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

    $772 (Avg Bid)
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    18 bids

    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...

    $241 (Avg Bid)
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    10 bids
    Fresh cryptocurrency leads 1 day 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

    I am more into crypto and developed an ecomerce store and had a coin developed from a dev before. I want to integrate that coin with my ecommerce store, I know basic knowlege but want to learn more technically in detail. Looking forward for a good teach in crypto. Thank you

    $616 (Avg Bid)
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    5 bids

    Multi coin mining portal development Looking developer from Chennai only

    $443 (Avg Bid)
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    9 bids
    Masternode ranking website 23 hours left
    VERIFIED

    I am looking for someone to create masternode ranking website similar to: [login to view URL] [login to view URL] [login to view URL]

    $201 (Avg Bid)
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    12 bids
    Betting Site 17 hours left
    VERIFIED

    One of my client required betting site like [login to view URL] with crypto currency all money transaction by bitcoin or alt coin

    $2416 (Avg Bid)
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    16 bids

    website is built in lavarel, ubuntu make it mobile and iPAD responsive + deploy tokens (truffle) on mainnet.

    $179 (Avg Bid)
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    15 bids

    I need Bitcoin wallet with good features

    $845 (Avg Bid)
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    24 bids
    Create a new Crypto Currency 42 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
    59 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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