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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 trabajados encontrados, precios en USD

    Hola necesito un bot telegram q me permita registrar usuarios y registrar direcciones de wallet soy trader y quiero contribuir a ganar a los demás

    $23 (Avg Bid)
    $23 Oferta Promedio
    1 ofertas

    Hi we need a CryptoCurrency & Blockchain Developer for our company work there two phases of this project first we will do simple phase 1 then move to phase 2

    $161 (Avg Bid)
    $161 Oferta Promedio
    14 ofertas

    I have the bones in place for this but cannot get it to compile under windows. I would need an expert in QT5 and C++ to take a look at my github repo and make the necessary changes to get this to work and compile under Windows, macOS, and [iniciar sesión para ver URL] transfering and compiling will be tested before payment is sent. You MUST have experience in QT networking and cryptocurrenc...

    $211 (Avg Bid)
    $211 Oferta Promedio
    6 ofertas

    A crash gambling site like [iniciar sesión para ver URL] - Bitcoin Deposits/withdrawals - Provably fair game - admin panel Want to know a price!

    $470 (Avg Bid)
    $470 Oferta Promedio
    21 ofertas

    We need JavaScript functions for creating EOS address, send EOS, RECEIVE EOS, and query EOS balance

    $101 (Avg Bid)
    $101 Oferta Promedio
    1 ofertas

    I need someone to install a fully functional waves paltform, a dex ( decentraliez exchange of [iniciar sesión para ver URL] and their gitub is [iniciar sesión para ver URL]) and if it’s necessarily to fork the waves blockchain No change no implementations, the design will be edited by one of our members, so just that there will be a new blockchain that will work over the dex, ...

    $297 (Avg Bid)
    $297 Oferta Promedio
    10 ofertas

    I have already posted this project previously also so those who have already worked in the past please don't ping me The person has to be good in the above mentioned platforms Also before starting the project the person has to perform sample demo trades for 2 days atleast and based on the win - loss ratio I will determine the best fit I am only looking for people who are consistent enough ...

    $1062 (Avg Bid)
    $1062 Oferta Promedio
    2 ofertas
    Fake BTC transaction generator 5 días left
    VERIFICADO

    We are looking for some developer to develop a bitcoin client, with the feature to send fake transactions to the chain. All we need is for the transaction to be shown in the [iniciar sesión para ver URL], obviously we don't expect them to ever get confirmed! Required: - Amount field - Bitcoin address field.

    $578 (Avg Bid)
    $578 Oferta Promedio
    4 ofertas

    I am an employee with Nova Ligna bvba but have my own business also D-zone... We are building snooker web site. Currently web site is almost done. We are looking a senior developer that know well how to process Ideal, bancontact, etc payments using Bitcoin, [iniciar sesión para ver URL],paypal, stripe, etc. I need simple test.

    $297 (Avg Bid)
    $297 Oferta Promedio
    20 ofertas

    Small project ( 2 to 3 pages ) about the idea of using Blockchain in the Egyptian banking sector , pros and cons and barriers .

    $34 (Avg Bid)
    $34 Oferta Promedio
    19 ofertas

    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...

    $533 (Avg Bid)
    $533 Oferta Promedio
    26 ofertas

    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...

    $189 (Avg Bid)
    $189 Oferta Promedio
    5 ofertas
    Fork Github Repo for New Crypto 4 días left
    VERIFICADO

    fork the Pivx githug repo [iniciar sesión para ver URL] set up testnet, make sure everything works properly hash new genesis block and start the blockchain on mainnet compile wallets with new logo and sync to new chain you just created

    $1219 (Avg Bid)
    $1219 Oferta Promedio
    19 ofertas

    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 Oferta Promedio
    8 ofertas
    mining BTC production 2019 : 2025 3 días left
    VERIFICADO

    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

    $26 (Avg Bid)
    $26 Oferta Promedio
    4 ofertas

    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.

    $506 (Avg Bid)
    $506 Oferta Promedio
    24 ofertas

    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...

    $9646 (Avg Bid)
    $9646 Oferta Promedio
    47 ofertas
    Arbitrage trading 2 días left
    VERIFICADO

    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 Oferta Promedio
    5 ofertas

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

    $820 (Avg Bid)
    $820 Oferta Promedio
    8 ofertas

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

    $2590 (Avg Bid)
    $2590 Oferta Promedio
    18 ofertas

    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 Oferta Promedio
    6 ofertas

    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 Oferta Promedio
    1 ofertas

    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 Oferta Promedio
    22 ofertas

    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.

    $945 (Avg Bid)
    $945 Oferta Promedio
    26 ofertas

    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...

    $13764 (Avg Bid)
    $13764 Oferta Promedio
    63 ofertas
    Create an altcoin 1 día left
    VERIFICADO

    Please quote for creation of an alt coin with block

    $626 (Avg Bid)
    $626 Oferta Promedio
    16 ofertas

    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 Oferta Promedio
    5 ofertas

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

    $95 (Avg Bid)
    $95 Oferta Promedio
    3 ofertas

    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 Oferta Promedio
    21 ofertas

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

    $861 (Avg Bid)
    $861 Oferta Promedio
    7 ofertas
    Marketing services Final left
    VERIFICADO

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

    $505 (Avg Bid)
    $505 Oferta Promedio
    51 ofertas
    Bitcoin tarzı coin sitesi 7 días left
    VERIFICADO

    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 Oferta Promedio
    2 ofertas

    Principales artículos de la comunidad Bitcoin