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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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    29 znalezione projekty, cennik w USD
    I need a MD6 Hex Hash Crypto App 6 dni left
    ZWERYFIKOWANY

    ๏קรςz)))(()| well it goes like this im using a sophisticated system to operate my life with [zaloguj się, aby wyświetlić URL][zaloguj się, aby wyświetlić URL][zaloguj się, aby wyświetlić URL]ResearchDevelopment ๏קรςz)))(()| so i need someone who knows the coding and formula to do this correctly and I WILL KNOW i see the prototype for the MD6 comes in 3 strengths 128...

    $1389 (Avg Bid)
    $1389 Średnia Oferta:
    17 składanie ofert
    Smart contract on Blockchain 6 dni left
    ZWERYFIKOWANY

    Hello I am looking for developer that will help to create smart contract that will be sending some amount of tokens by specific amount of cryptocurrency. Please, send me information in which blockchain do you have experience. It would be nice to hear something about you past projects with blockchain technology.

    $13 / hr (Avg Bid)
    $13 / hr Średnia Oferta:
    19 składanie ofert

    Bonjour, Je gère un site Woocommerce et je cherche à me passer des gateways traditionelles. Le problème : mes clients voudront toujours payer avec des monnaies normales (FIAT) comme le dollar ou l'euro. L'idée serait donc de mettre en place un système où : - Le client paye en FIAT (a un broker tiers) - L'argent est converti en crypto p...

    $494 (Avg Bid)
    $494 Średnia Oferta:
    11 składanie ofert

    We need to fix the wallet:transactions:send is limited $1.00/day per user limit, but cannot get in touch with coinbase support so looking for someone that knows this error and can let us know what the issue is and how to remove this. Here is a screenshot: [zaloguj się, aby wyświetlić URL] We have created oauth2 applications on multiple accounts all giving the same results of the $1.00/day per u...

    $51 / hr (Avg Bid)
    $51 / hr Średnia Oferta:
    16 składanie ofert

    Plataforma en donde funcione una casa de intercambio de criptomonedas, iniciando con Bitcoin, Ethereum y Dash y luego ir incorporando mas criptos. Desarrollo en python, manejo de API. Esta plataforma iniciara operando en Colombia, luego se ira expandiendo a toda América Latina

    $834 (Avg Bid)
    $834 Średnia Oferta:
    13 składanie ofert

    Build Bitcoin Wallet website In php

    $7188 (Avg Bid)
    $7188 Średnia Oferta:
    68 składanie ofert

    Hi! I need people who can track bitcoin transactions and so on...!

    $231 (Avg Bid)
    $231 Średnia Oferta:
    10 składanie ofert

    Dear All, I want to add API to our website to accept cryptocurrency via [zaloguj się, aby wyświetlić URL] Simple page required to call api and get response, no database required. Should be in PHP and should be very simple Please if you do not have any experience with blockchain do not bid. Please if you did not do project like this do not bid. Please do not bid over our budget, if you do not like ...

    $156 (Avg Bid)
    $156 Średnia Oferta:
    10 składanie ofert
    Blockchain Fork Particl.io 4 dni left
    ZWERYFIKOWANY

    Looking for someone who can fork and build a chain with Particl.io. Need to implement full chain and custom code as well premine, explorer building. [zaloguj się, aby wyświetlić URL]

    $352 (Avg Bid)
    $352 Średnia Oferta:
    4 składanie ofert
    Wallet for cryptocurrenct 4 dni left
    ZWERYFIKOWANY

    wallet for cryptocurrency like bitcoin, bitcoin cash, etc transaction charge/ commission deduction as profit. quick internal transfers (instant)

    $702 (Avg Bid)
    $702 Średnia Oferta:
    5 składanie ofert
    Blockchain on WordPress 4 dni left
    ZWERYFIKOWANY

    Hi, I am looking for someone who can help me with blockchain storage of documents with timestamp through WordPress and Gravity forms.

    $159 (Avg Bid)
    $159 Średnia Oferta:
    13 składanie ofert

    Hello, We are a team at the Moskow. We need your support for a long time. Who can answer to this bitcoin problem that appear when broadcast hex? Problem: "An error occured: Missing inputs. Code:-25" Here is the code snippet for getting the hex. ...... [zaloguj się, aby wyświetlić URL]("c0fb6a0a31fd60c952afda1184a5e309a9337f843b624a0744f02abe447bbc55", 0); [zaloguj się, aby wyś...

    $933 (Avg Bid)
    $933 Średnia Oferta:
    7 składanie ofert

    Hey! I have a ERC20 token and need to list our ICO on some exchanges for fundraising . In your bid please provide examples of how it could look from your previous jobs with ICO projects . I will only hire you if you have experience with ICO or IEOs. payment based only on success after token listed and ICO / IEOs got officially listed . we add a performance bonus that will be calculated by : 10%...

    $476 (Avg Bid)
    $476 Średnia Oferta:
    9 składanie ofert

    I need JSON RPC Web Api for Send and Receive Ethereum .Net

    $241 (Avg Bid)
    $241 Średnia Oferta:
    4 składanie ofert

    Hello, we are a team working on the crytocurrency site. We need a bitcoin & nodejs expert urgently. You should support or handle the main difficult part in our project. How can we choose you right now? Please send us the correct answer for the below test. Here is a simple bitcoin problem: namely, the bitcoin transaction code snippet. 1- Question: The below code is wrong or right? 2-Question: ...

    $1220 (Avg Bid)
    $1220 Średnia Oferta:
    26 składanie ofert

    Build Ico website In eth, btc payments

    $2652 (Avg Bid)
    $2652 Średnia Oferta:
    77 składanie ofert
    blockchain 2 dni left

    I am looking for a blockchain and python expert. best regards. NO ASIAN!!!

    $3875 (Avg Bid)
    $3875 Średnia Oferta:
    16 składanie ofert

    I need easy script page with bitcoin payment. - Selection of product - Mail form of client - Buy button ---> details for payment idwallet ( idwallets set by me, more address) -Page feedback PM me for example page. Tor network project

    $177 (Avg Bid)
    $177 Średnia Oferta:
    15 składanie ofert

    Hello, I'm looking for someone for my project to help me start a smaller monthly income using cryptocurrencies

    $37 (Avg Bid)
    $37 Średnia Oferta:
    6 składanie ofert

    We are working with the City of London and Renewable energy resource providers in the UK to create a cost efficient Bitcoin Mining Farm. We are looking for experts in the Bitcoin industry who have expertise at setting up and running a Bitcoin Mining Farm. We are looking for about 4 experts to be part of the panel who advice our company The Bitcoin Mining Company Limited based in London England...

    $35 / hr (Avg Bid)
    $35 / hr Średnia Oferta:
    13 składanie ofert

    Functionalities include: User creating a Wallet, generate Keys, Save Keys, etc, Mining Process,

    $1321 (Avg Bid)
    $1321 Średnia Oferta:
    24 składanie ofert
    USDT Omni HD Wallet 2 dni left
    ZWERYFIKOWANY

    1. Generate many usdt address for deposits in a simple web application 2. All usdt are consolidated in one main address for transfer to other usdt address 3. Verify deposits completion for the many usdt addresses

    $1170 (Avg Bid)
    $1170 Średnia Oferta:
    11 składanie ofert

    Want a very simple exchange via smart contract and extremely simple interface. The project is one token to be exchanged with ethereum. Price of token is always 0.01eth the price can’t be changed but people will list tokens to sell or buy on order book and you can take those orders. The price is the same but people can list % over or under the price only within 5% of the price of 0.01eth (ove...

    $552 (Avg Bid)
    $552 Średnia Oferta:
    8 składanie ofert
    crypto affiliate website 1 dnia left
    ZWERYFIKOWANY

    i have a client would like to build a crypto affiliate website. it should allows visitors to buy major coins like BTC, ETH and altcoins with fiat, credit card, debit card, crypto-to-crypto. upon successful, my client will earn affiliate from the transaction. visitors do not earn any but to provide them the website to buy and sell. we only shortlist those has done this before. happy bidding. ...

    $1352 (Avg Bid)
    $1352 Średnia Oferta:
    24 składanie ofert

    Dear Freelancer, We are looking for an trading algorithm which via API can be connected to cryptocurrency exchanges. The software will be used for MarketMaking services. Please only experienced freelancers with a track record.

    $34 / hr (Avg Bid)
    $34 / hr Średnia Oferta:
    16 składanie ofert

    Multi-language users must create an account and charge their wallet then can select game and use its own zheton to play ! So need User account Control and Database for it ! There are some payment methods : PerfectMoney - WebMOney - Digital Cyrrency (like BitCoin, Litecoin (LTC), Ethereum (ETH), Ripple (XRP), Monero (XMR), Bitcoin Cash (BCH) ... etc.) so need appropriate Wallet for it ! and a...

    $1201 (Avg Bid)
    $1201 Średnia Oferta:
    15 składanie ofert

    I need ready to upload centralized crypto exchange, that will mainly support ETH & TRX Tokens. the following features wil be acknowledged: Investbox, IEO Launchpad, Trading Competition, Airdrops and Swaps functions. Note, i need already made script not to build from scatch, cant wait for [zaloguj się, aby wyświetlić URL]

    $1140 (Avg Bid)
    $1140 Średnia Oferta:
    15 składanie ofert

    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
    Ukryte
    $750 - $1500
    47 składanie ofert

    I need a Crypto expert for my current projects. If you have knowledge please bid. Details will be shared in message with the freelancers.

    $7 - $68
    Ukryte
    $7 - $68
    53 składanie ofert

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