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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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    26 건 검색 완료, 금액 기준 - USD

    I need you to help fix some errors on software for me. I would like this software to be fixed.

    $147 (Avg Bid)
    $147 평균 입찰가
    19 입찰

    # all erc20 eth based coin are available # all masternode coin supported in our exchange # secqurity (google2fa for confirm withdraw) # user transer coin user to user # some extra factional talk to latter i have not enough time if u have previous experience and if r capable to show some demo then u can bit

    $1250 (Avg Bid)
    $1250 평균 입찰가
    10 입찰

    Purpose is to make a pool for mining cryptocurrencies on different algorithms. clients with personal computers or asic miner min on the pool and get payed according to the power of their hardware hash rates. This pool has to have a windows base software that makes clients without special computer knowledge able to connect to pool and start mining. Pool has to support different algorithm for gpu /c...

    $2727 (Avg Bid)
    $2727 평균 입찰가
    19 입찰

    My Previous devolper is faild to proivde what I asked so I need to make sure I will get what I am looking for and not just cookiecut work. You need to create a copy of NEO coin but with a new own Blockchain and own Explorer with our details and supply also some of changes which we will ask you to do. You need to clear and provide all points including: SUPERBLOCK Privatekey Core Specification Wal...

    $551 (Avg Bid)
    $551 평균 입찰가
    5 입찰

    Crear Criptonedas Digital y venderlas

    $20 / hr (Avg Bid)
    $20 / hr 평균 입찰가
    5 입찰
    Python telegram and ccxt 6 일 left
    확인

    Hello, I am seeking for a Python developer who can modify existing script that uses telegram client ([로그인하시면, URL을 확인하실 수 있습니다.]) and ccxt ([로그인하시면, URL을 확인하실 수 있습니다.]) modules. Happy bidding!

    $149 (Avg Bid)
    $149 평균 입찰가
    8 입찰

    Nuestra Empresa [로그인하시면, URL을 확인하실 수 있습니다.] necesita personas con conocimientos básicos y avanzados en bitcoin, ethereum, desarrollo en solidity y manejo de intercambios criptomonedas, ICO, IPO, Minería POW Y POS, FINTECH 2.0 y todo lo relacionado con economía digital. Se adjunta libro guía de conocimientos básicos en trading, blockchain y criptoeconomia. Nota:...

    $28 / hr (Avg Bid)
    $28 / hr 평균 입찰가
    5 입찰

    I am looking for python expert who is familiar with bitcoin trading like Bitmex. Details will be discussed over a chat.

    $68 (Avg Bid)
    $68 평균 입찰가
    8 입찰

    We are starting a cryptocurrency exchange platform. Here we are looking for team members who are well connected and can promote our platform in the following languages/countries. English Chinese Korean Hindi (india) Russian Spanish French German We are looking for people that can become more than just employees from upwork but people that can join our company and become shareholders.

    $50000 (Avg Bid)
    $50000 평균 입찰가
    9 입찰

    Need to develop a application with [로그인하시면, URL을 확인하실 수 있습니다.] API. 1. Bot has to automate setting advert prices to check / scrape every few seconds and automatically slightly beat the price (competitor advertisements) offered on selected pages and Minimum Bitcoin price and Maximum Bitcoin price option to be there (The advertisements has to run on between these prices). 2. Bot has to send a 3 c...

    $225 (Avg Bid)
    $225 평균 입찰가
    8 입찰
    Bitcoin Trader 5 일 left

    I need a bitcoin trader that I can use and trade with privately using national bank transfer. It will be on several different occasions with different amount. Be prepared to set up multiple banks etc for trading.

    $1595 (Avg Bid)
    $1595 평균 입찰가
    22 입찰

    Nuestra Empresa [로그인하시면, URL을 확인하실 수 있습니다.] necesita personas con conocimientos básicos y avanzados en bitcoin, ethereum, desarrollo en solidity y manejo de intercambios criptomonedas, ICO, IPO, Minería POW Y POS, FINTECH 2.0 y todo lo relacionado con economía digital. Se adjunta libro guía de conocimientos básicos en trading, blockchain y criptoeconomia. Nota:...

    $2283 (Avg Bid)
    $2283 평균 입찰가
    12 입찰
    Bitmex and python project 4 일 left
    확인

    Please bid if you are familiar with Bitmex python API. If you are expert, please write "I am a Bitmex python coder" at the beginning of your proposal. Details will be shared via private chat.

    $168 (Avg Bid)
    $168 평균 입찰가
    11 입찰

    I currently have a bot for regular Binance in Python, but need help converting it to the US version. More specifically I need help with: 1. example of getting market data 2. example of getting account data 3. example of submitting a market buy order I should be able to figure the rest out.

    $37 / hr (Avg Bid)
    $37 / hr 평균 입찰가
    31 입찰

    Do you have more than a year of bitcoin core development experience? Are you experienced with c++ and qt, and compiling chains for multiple platforms? Then this is the job for you. I have multiple projects for you to support me for long time. Please contact me. i want to start asap with the right person. Thanks and tell me what your favorite programming language is.

    $291 (Avg Bid)
    $291 평균 입찰가
    16 입찰
    Bitcoin ATM (3) 3 일 left
    확인

    Research on Bitcoin ATMs. Looking for someone highly knowledge able the technical side of Bitcoin ATMs, blockchain analytics, and cryptocurrency risk. Should be able to research (using blockchain public sources, etc.) and answer the following questions: 1) Bitcoin ATM operator wallets: Does an operator use the one wallet address per Bitcoin ATM? The same wallet address across multiple ATMs? Do o...

    $50 / hr (Avg Bid)
    $50 / hr 평균 입찰가
    11 입찰

    Hello, We looking for an dev for : daemon installation crypto on ubuntu server including build. ( time allowed to you : 1h ) web wallet installation ( time allowed to you 4 hrs ) api 2 installation ( time allowed to you 2hours ) - Total estimation time : 7h - 8h. - Budget allowed : $50 We are ready to hire you now. Thx you.

    $52 (Avg Bid)
    $52 평균 입찰가
    5 입찰

    Hello, We looking for an dev for : daemon installation crypto on ubuntu server including build. ( time allowed to you : 1h ) web wallet installation ( time allowed to you 4 hrs ) api 2 installation ( time allowed to you 2hours ) - Total estimation time : 7h - 8h. - Budget allowed : $50 When start ? Now. We are ready to hire you now. Thx you.

    $51 (Avg Bid)
    $51 평균 입찰가
    4 입찰

    Need Best BTC Miner software that works

    $180 (Avg Bid)
    $180 평균 입찰가
    10 입찰

    Need A Cryptocurrency Website FrontEnd Developer.....I want to redesign my Cryptocurrency exchange website!

    $214 (Avg Bid)
    $214 평균 입찰가
    22 입찰

    Hello, im searching to build a website to sell bitcoin for fiat. Bitcoin withraw will be done manualy . For more informations please contact me.

    $1343 (Avg Bid)
    $1343 평균 입찰가
    30 입찰

    I have a script that handles several payment methods for websites, after a few days the APIs stop working being blocked and throwing error. The problem of the APIs must be solved so that it works correctly with the domain or any other domain, you may have to do a job with a PHP Proxy to solve this.

    $192 (Avg Bid)
    $192 평균 입찰가
    12 입찰
    Build Crypto Wallet 1 일 left
    확인

    I need a lightweight multi-currency wallet. This wallet will NOT have to download the entire chain for all the currencies in this wallet. This wallet will run on Windows, IO, Android and Other Operating systems. The user should be able to switch between the coins and utilize the features of each wallet. 1. Bitcoin Private (BTCP) A. This wallet MUST be able to utilize both Transparent (b) and Shi...

    $876 (Avg Bid)
    $876 평균 입찰가
    21 입찰

    I need a bitcoin hardfork developed and set up as a mineable coin. Everything else will be exactly the same as the original bitcoin but larger blocks and it will be forked at a block just before segwit. Need it all set up and tested with Linux, windows and Mac wallets. It can be a Zcash hardfork as well so it need to be Bitcoin or Zcash, I mean we will decide it with the discussion. You are respon...

    $705 (Avg Bid)
    $705 평균 입찰가
    12 입찰
    Web dESIGNERS 1 일 left

    I need web designers. For a store / page system That I can accept card payments, but I receive in bitcoin or other cryptocurrencies.

    $386 (Avg Bid)
    $386 평균 입찰가
    50 입찰

    I am looking for engineer who can work with our team to develop the Bitcoin website... Must be good at Blockchain and website and DB.... Also, have got a good knowledge of AWS.

    $750 - $1500
    봉인
    $750 - $1500
    91 입찰

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