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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

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, 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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    910 jobs found, pricing in NZD

    Preciso de desenvolver scripts api para um site que irá comprar e vender criptomoedas. Funcionalidades: Enviar ordens de compra e venda para várias exchanges; Enviar conultas de book de negociação para várias exchanges; Tratamento de retorno destes envios. O profissional deverá conhecer o mercado de criptomoedas.

    $38 - $313
    $38 - $313
    0 bids

    I am looking for a coder who can code a simple tool (an Android app) - to: . Sign *offline* a *specific* bitcoin raw unsigned transaction - imported via its QR code; . Generate the QR code of the resulting signed raw transaction.

    $272 (Avg Bid)
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    4 bids

    Need a blockchain development company to maintain a project. Should be expert in solidity, etheruem and truffle. No newbies please. Should have done block chain projects before I want to see your previous work and I want to see your staging instance. Apply only if you are for real. I am a tech person so I no tricks.

    $3284 (Avg Bid)
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    6 bids

    Looking for a backend developer with experience in Blockchain to create a cryptocurrency exchange that tracks digital assets to hedge investor's positions in this very volatile market. Please contact me to discuss about the project.

    $5840 (Avg Bid)
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    32 bids

    I need some changes to an existing website. My website is built on yii framework amd mysql. Im looking to improve performance of image structure when uploading new images on items - add pricr convert and insode ui in product page to show bitcoin and litecoin price to USD price And improve and bugs and improments in old framework to improve security and performance. [url removed, login to view] yi...

    $750 (Avg Bid)
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    40 bids

    Ripple connects banks, payment providers, digital asset exchanges and corporates via RippleNet to provide one frictionless experience to send money globally. Since 2012, Ripple has methodically sold XRP and used it to incentivize market maker activity to increase XRP liquidity and strengthen the overall health of XRP markets. To alleviate concerns surrounding XRP supply, Ripple has placed 55 bi...

    $1807 (Avg Bid)
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    10 bids

    Hello everyone, I want to make an investment site for bitcoin and ethereum, in fact this site will be a joke for my friends. Could you do the same thing on the site I give you? Reference website: [url removed, login to view] (you will add an ethereum section on this site)

    $501 (Avg Bid)
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    34 bids

    We need a blockchain developer for various tasks for our ico. Will need to be experienced and willing to be part of the team

    $456 (Avg Bid)
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    32 bids

    Hi, I want to develop new crytocurrency based on ERC20 or better solution (please suggest) with DAICO like The new coin will be used in our game portal (purchase item in games..). The new coin can be exchanged on the market like others. I'm looking forward great team can provide solution for our ideas.

    $54667 (Avg Bid)
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    48 bids

    I need a pos gateway without third-party services where it will be possible to accept bitcoin ethereum dash litecoin monero this pos must be developed in responsive mode with my administrative side where I will activate new users with login and password will serve the premises as pos to receive payment then the merchant will have to log in and add the price with the products he will usually u...

    $288 (Avg Bid)
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    5 bids

    Am looking for a bot for LocalBitcoins for buying Bitcoins, not selling. but to buy. it should always be on top of other traders. please note it should be automated. i would prefer if you know crypto, and if you have done this before.

    $567 (Avg Bid)
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    17 bids

    hello i want to implement erc20 token to an exchange website which is built in php , need a person who can implement that erc20 token to exchange

    $1365 (Avg Bid)
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    12 bids

    i need bitaddress changed so i can generate address´offline on my own drawing of a paper wallet, rather than theirs... the drawings done, then i can then print out multiples instead of having to copy paste each address.

    $831 (Avg Bid)
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    3 bids

    We are looking for a coder who can build us a basic ERC-20 Smart Token with a few specifications: 1. Ethereum Based ERC-20 Token 2. Airdrop + Bounty Distributions 3. x% reserved in a wallet while the rest goes towards ICO 4. Pre ICO and ICO with different tiers and deployment dates. The code does not need to be minable or fancy looking forward to working with someone with a strong technical...

    $1357 (Avg Bid)
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    30 bids

    Looking for a developer experienced in PHP Laravel framework to complete an existing Cryptocurrency exchange web app. Need to integrate 3rd party wallet service like Bitgo and process buy/sell orders. Please reach back for more information.

    $18 / hr (Avg Bid)
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    47 bids

    Hi, I need to launch my own coin on a private blockchain with smart contract, ICO, etc if anyone with these skills ping me My budget is MAX INR 80,000 /-, If you are flexible in doing this thing in the given amount then only bid. Preferred Location: Pune, India

    $1995 (Avg Bid)
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    8 bids
    local intercambiador bitcoin 3 days left

    Una web administrable con toda las características de [url removed, login to view], y que tenga una sesión de afiliados que ganen comisiones

    $3260 (Avg Bid)
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    15 bids

    Dear All , we are looking for a person who is experienced in crypto currency exchange websites making. we will pay on an hourly basis. we need a person who can help in different issues. Thank you

    $14 / hr (Avg Bid)
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    14 bids

    deseo un proyecto igual con las mismas características de [url removed, login to view] y un programa de afiliados.

    $10975 (Avg Bid)
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    14 bids

    I have my own coin now. i want Blockchain Expert for long term

    $1832 (Avg Bid)
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    34 bids

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