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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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    33 trabajados encontrados, precios en USD

    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)
    $438 Oferta Promedio
    4 ofertas

    Please look at the attached document and contact us to discuss the work! The exchange needs to built in C++. You need to know security, block chain and how to work with it. Up to 10 market parings (BTC, ETH, LTC, XRP, BCHSV and, USDC or other ERCtokens / List an option for favorites pairings for customers.) May add more coins Connecting the 10 API from foreign Exchanges such as: Binance / [inic...

    $2135 (Avg Bid)
    $2135 Oferta Promedio
    20 ofertas
    Cryptocurrency Arbitrage Bot -- 3 6 días left
    VERIFICADO

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

    $23 / hr (Avg Bid)
    $23 / hr Oferta Promedio
    4 ofertas
    Ethereum - Solidity help 6 días left
    VERIFICADO

    I need help with a lottery dapp -can I generate an array of 15 random numbers to create a ticket for the buyer -generate 40 random numbers for the game round. Can I return a dynamic array with all the numbers and does it cost a lot of gas to call the function to generate each of every time

    $9 (Avg Bid)
    $9 Oferta Promedio
    1 ofertas

    i need a cryptocoin bot that can handle arbitrage between cryptoexchanges. recently a developer worked for this project but he had health issues and left the project Bot %60 finished but not completed, frontend is nearly complete, all codes are in Digital ocean droplet server and it works partly, have 3 cryptocoin exchanges and 15 coins integrated. - job description and details are here [iniciar ...

    $468 (Avg Bid)
    $468 Oferta Promedio
    15 ofertas
    Customized Cryptocurrency Exchange 6 días left
    VERIFICADO

    Hello, We are interesting in launching a Cryptocurrency Exchange feature our own ERC-20 listings that would not be listed on our exchanges. As such we need our own Order Management System that could support our own network of market makers. We also need to support some of the major coin trading pairs and integrate with a major exchange for liquidity. However, this is our secondary requirement, n...

    $16429 (Avg Bid)
    $16429 Oferta Promedio
    36 ofertas

    developer required to teach basic things on bitcoin. you should know and have developed crypto currency. I will take one hour session to clear some logics and tech support. thanks

    $570 (Avg Bid)
    $570 Oferta Promedio
    3 ofertas

    A coin with its own block-chain (not a ico!) Ripple like: - Fast and fully anonymous - All coins are pre mined - You provide me with a panel that i can set coin symbol, Name, Amount of total coins and ect.. - you train me to any future maintenance if there is any. - You provide me with an explorer to the coin block chain. - Wallet (Desktop not Cloud) for pc windows that can store also other coins.

    $1018 (Avg Bid)
    $1018 Oferta Promedio
    21 ofertas

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

    $15122 (Avg Bid)
    $15122 Oferta Promedio
    31 ofertas

    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 - [iniciar sesión para ver URL] - [iniciar sesión para ver URL] - [iniciar sesión para ver URL] - [iniciar sesión para ver URL] - [iniciar sesión para ver URL] - [iniciar sesión para ver URL] I need support to do this, ...

    $3041 (Avg Bid)
    $3041 Oferta Promedio
    13 ofertas

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

    $1709 (Avg Bid)
    $1709 Oferta Promedio
    12 ofertas

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

    $137 (Avg Bid)
    $137 Oferta Promedio
    7 ofertas

    I need bitcoin mining hardware with very TH per hour

    $6174 (Avg Bid)
    $6174 Oferta Promedio
    18 ofertas

    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.

    $858 (Avg Bid)
    $858 Oferta Promedio
    17 ofertas

    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.

    $1445 (Avg Bid)
    $1445 Oferta Promedio
    35 ofertas
    Master Node Complete Project! 4 días left
    VERIFICADO

    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!

    $996 (Avg Bid)
    $996 Oferta Promedio
    23 ofertas
    Cryptocurrency Arbitrage Bot -- 2 4 días left
    VERIFICADO

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

    $143 (Avg Bid)
    $143 Oferta Promedio
    3 ofertas

    I'd like to build a trading engine with using REST API. These are the optional api service what I am thinking of. - [iniciar sesión para ver URL] - [iniciar sesión para ver URL] - [iniciar sesión para ver 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 ...

    $700 (Avg Bid)
    $700 Oferta Promedio
    15 ofertas

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

    $997 (Avg Bid)
    $997 Oferta Promedio
    33 ofertas
    Bitcoin/blockchain vendor shop 3 días left
    VERIFICADO

    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.

    $201 (Avg Bid)
    $201 Oferta Promedio
    14 ofertas

    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)
    $137 Oferta Promedio
    14 ofertas

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

    $1714 (Avg Bid)
    $1714 Oferta Promedio
    14 ofertas

    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)
    $31 Oferta Promedio
    1 ofertas
    Mining machine 2 días 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 Oferta Promedio
    2 ofertas
    Mining machine 2 días 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 Oferta Promedio
    4 ofertas

    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.

    $652 (Avg Bid)
    $652 Oferta Promedio
    15 ofertas

    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 Oferta Promedio
    13 ofertas

    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 Oferta Promedio
    8 ofertas

    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 Oferta Promedio
    7 ofertas
    Cryptocurrency Arbitrage Bot 1 día left
    VERIFICADO

    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 Oferta Promedio
    20 ofertas

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

    $1333 (Avg Bid)
    $1333 Oferta Promedio
    8 ofertas

    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)
    $23 Oferta Promedio
    1 ofertas
    Create a new Crypto Currency 39 días left
    VERIFICADO

    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.

    $3436 - $5727
    Destacado Sellado Acuerdo de Confidencialidad
    $3436 - $5727
    59 ofertas

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