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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 Gefundene Jobs, Preise in EUR

    we need someone to compile a new coin urgently may be hard fork from latest bitcoin version. Details in PM

    €138 (Avg Bid)
    €138 Gebot i.D.
    1 Angebote

    I need an Android app and mobile developer . I would like it designed and built.

    €1005 (Avg Bid)
    €1005 Gebot i.D.
    21 Angebote

    Hello, I'm currently working on an altcoin which is a fork of PIVX and we need some electrum servers to be setup for our coin. The algorithm is Quark. We'll ask you the following for this work. - Create a new Electrumx implementation supporting our coin - Test the implementation with us - Allow us an easy way to deploy more servers when needed (e.g. Documentation / Dockerfile)

    €154 (Avg Bid)
    €154 Gebot i.D.
    6 Angebote

    We need to create a fortnightly newsletter on the Cryptocurrency market for our company and need someone to write content for the same.

    €65 (Avg Bid)
    €65 Gebot i.D.
    9 Angebote
    Bitcoin mixer 5 Tage left

    Need a bitcoin mixing website that runs on both clearnet and tor. It must mix bitcoins and able to swap bitcoins for monero in an instant. Examples: [Zur Anzeige der URL Anmelden] [Zur Anzeige der URL Anmelden]

    €2324 (Avg Bid)
    €2324 Gebot i.D.
    32 Angebote

    We need our own cryptocurrency coin created for a new project. Needs to be POW and POS with masternodes. Ideally based on either Dash, PIVX or Zencash. If you can do project based on Loki or Zencash, Horizen let us know. You must have experience in creating similar coins before and show proof of work that you have done so. Share links to us and your github links. We need wallets for Linux, ...

    €1132 (Avg Bid)
    €1132 Gebot i.D.
    10 Angebote

    hi dear i want some one for setup and configure cryptocurrency systems my mean i want some open source project i founded in github send to him and he install and configure that for me or if i want some feature , he add on for me please just you know fully on cryptocurrency send bid in project if you don't know please don't send for now i want this system to installing : [Zur Anzeige d...

    €169 (Avg Bid)
    €169 Gebot i.D.
    7 Angebote

    Have a script that works on nuxt envoriment on node.js it trades with two crypto exchanges by restapi , it connects to exchanges with keys and can make trades following functions but somehow some of trades it should have done is missing, not always occuring but sometimes it misses trade orders, your job is to find why this is happening, fix codes and optimize workflow, exchanges are working well, ...

    €178 (Avg Bid)
    €178 Gebot i.D.
    16 Angebote

    Have a script that works on nuxt envoriment on node.js it trades with two crypto exchanges by restapi , it connects to exchanges with keys and can make trades following functions but somehow some of trades it should have done is missing, not always occuring but sometimes it misses trade orders, your job is to find why this is happening, fix codes and optimize workflow, exchanges are working well, ...

    €385 (Avg Bid)
    €385 Gebot i.D.
    19 Angebote

    Looking for blockchain and crypto developer who can work on current already developed blockchain and make some adjustments to it. You must also be expert in creating wallets out of blockchain code and it will be a big plus if you have created ICO and Cryptocurrency Exchange sites.

    €472 (Avg Bid)
    €472 Gebot i.D.
    18 Angebote
    Build a Bitcoin donation website 4 Tage left
    VERIFIZIERT

    Build a secured, mobile friendly Bitcoin donation website that will have a minimum daily traffic of over 100

    €138 (Avg Bid)
    €138 Gebot i.D.
    23 Angebote
    YEP COIN GATEWAY -- 2 4 Tage left
    VERIFIZIERT

    I am looking for a person to develop a Gateway for credit card and PayPal in order to pay a crypto currency. Communications with the wallet are done in RPC. The gateway will need to be integrated into a website.

    €557 (Avg Bid)
    €557 Gebot i.D.
    15 Angebote
    php bitcoin cit core API 4 Tage left
    VERIFIZIERT

    We are looking for bitcoin (bitcore api) developer to build simple code then to build a full node. We also are looking to add you to our team.

    €3 / hr (Avg Bid)
    €3 / hr Gebot i.D.
    9 Angebote

    Blockchain Developer needed to develop a secure and decentralized file transfer application.

    €446 (Avg Bid)
    €446 Gebot i.D.
    14 Angebote

    create and deploy erc20 token. Send ownership and tokens to me

    €35 (Avg Bid)
    €35 Gebot i.D.
    11 Angebote

    Need a very simple site where users can download an mp3 file. They will have the choice of bitcoin, Ethereum or an Ethereum token to download and once payment is received they will receive download automatically. This system will work similar to iTunes but with cryptocurrency. The site will have a stylish, modern index page where the download will be found and a couple simple sub pages such as pri...

    €282 (Avg Bid)
    €282 Gebot i.D.
    14 Angebote
    Token modeling 2 Tage left
    VERIFIZIERT

    For a token model for which I would to have critics and challenges, I am looking for someone with strong passion for blockchains/Token/Smart Contracts etc,, This is a job for someone who have passion than for someone who want to make money immediately.

    €11 / hr (Avg Bid)
    €11 / hr Gebot i.D.
    10 Angebote

    We are looking for a blockchain developer who will be responsible for designing, implementing, and supporting a distributed blockchain-based network. Primary responsibility will be analyzing requirements, designing blockchain technology around a certain business model, and the building and launching of a blockchain network. You'll be assisting a team (two full stack developers) that has a &q...

    €18 / hr (Avg Bid)
    €18 / hr Gebot i.D.
    24 Angebote
    Payment forwarder Cryptocurrencies 2 Tage left
    VERIFIZIERT

    Hi. make an API just for transfer money from an private key of {dogecoin(bitcoin(litecoin} to another address ( main wallet for us ) ? If you can make it under 10 hours massge me no more longer Thanks Telegram : [Zur Anzeige der URL Anmelden]

    €570 (Avg Bid)
    €570 Gebot i.D.
    17 Angebote

    Hi guys, i'm looking for a PHP charity script that looking similar to this website [Zur Anzeige der URL Anmelden], with Cryptocurrency donation features. contact me for me if you have something similar to this script. NOTE: Not looking for who to design similar site for me, i am only looking for the script and willing to pay OK.....Cheers

    €177 (Avg Bid)
    €177 Gebot i.D.
    4 Angebote

    Hi guys, i'm looking for a cryptocurrency PHP charity script that looking similar to this website [Zur Anzeige der URL Anmelden], contact me for me if you have something similar to this script. NOTE: Not looking for who to design similar site for me, i am only looking for the script and willing to pay OK.....Cheers

    €693 (Avg Bid)
    €693 Gebot i.D.
    3 Angebote

    BitCoin Functionality for PHP app I am looking for a skilled PHP Developer to help add BitCoin functionality to an e-commerce website I am working on. The project is being developed in PHP using the Code Igniter 3 framework so ideal would be to find a person with PHP, Code Igniter and BitCoin knowledge :) All registered members of the website will have their own pre-paid BitCoin account, this ac...

    €172 (Avg Bid)
    €172 Gebot i.D.
    19 Angebote

    I want a professional here who has developed a app for me that is online now that i can check,that is habing diffrent wallets for keeping 10 cryptocurrencies and custom currency, once i review the app,i would need edits to the design and a type of it handed to me in few days,i domt want work from scratch,and i domt fund before,i see admin and app with my designs first then i apprive anyother thing...

    €112 (Avg Bid)
    €112 Gebot i.D.
    9 Angebote

    I am looking to make a Multi Vendor market place for a dot com. This is not a simple word press website. I need an actual developer who can handle this. This is a huge project. I am looking to make this as a dot com and also a dot onion mirror. The dot com is more improtant to start. The features will be as followed. Multi Vendor marketplace with rating system and messages. Customer will send t...

    €6720 (Avg Bid)
    €6720 Gebot i.D.
    44 Angebote

    Hi, I need a simple matrix system. There is an example of the system I want. ([Zur Anzeige der URL Anmelden]) I just want a little change. * 2*4 matrix system will pass to a higher level that completes the Matrix * total 7 levels *each investor will join the system with 0.010 bitcoin and will not pay any further *payments will only be made by bitcoin *as shown in the picture, there will be no gai...

    €429 (Avg Bid)
    €429 Gebot i.D.
    13 Angebote
    Firebase function project 1 Tag left
    VERIFIZIERT

    MUST have good knowledge into firebase functions, firestore and storage. The developer will optimize the code already existing into firebase cloud functions and give support to future updates. The app is integrated with Coinpayments API. We are looking for someone that want to engage into the project. We want to start small and increase the amount paid to you as you are getting more involved int...

    €10 / hr (Avg Bid)
    €10 / hr Gebot i.D.
    19 Angebote

    I need a blockchain developer to develop [Zur Anzeige der URL Anmelden]

    €4054 (Avg Bid)
    €4054 Gebot i.D.
    18 Angebote

    Multi vendor marketplace escrow script that runs using bitcoind. Sellers list items for sale in exchange for bitcoin. Buyers deposit bitcoin to their bitcoin wallet on their market account. They then buy products from sellers on the market using the bitcoin. Buyer clicks buy > Bitcoin transfers to market central escrow wallet hosted on server > Buyer confirms goods have been received and ...

    €259 (Avg Bid)
    €259 Gebot i.D.
    10 Angebote

    Hi freelancers, We would like to get similar website to [Zur Anzeige der URL Anmelden] with ALL the existing features on it. (Buy/Sell/Wallet/PaymentProcessing/Plugins/API/multilanguages/etc...etc...) Nothing is going to be provided by us. You have to do it all. Please list your real best price and timeline. We will not contact you to negociate as we believe the project is already very clear. ...

    €3545 (Avg Bid)
    €3545 Gebot i.D.
    10 Angebote

    Hi freelancers, We would like to get similar website to [Zur Anzeige der URL Anmelden] with ALL the existing features on it. (Buy/Sell/Wallet/PaymentProcessing/Plugins/API/etc...etc...) Nothing is going to be provided by us. You have to do it all. Please list your real best price and timeline. We will not contact you to negociate as we believe the project is already very clear. Moreover, to a...

    €3796 (Avg Bid)
    €3796 Gebot i.D.
    13 Angebote

    Hi freelancers, One of client want to launch bitcoin selling and buying with trading. Please reply if you already done similar. We are looking experienced freelancer who already worked similar project. We know this is little big project budget will discuss. Cheers DCS

    €156 (Avg Bid)
    €156 Gebot i.D.
    4 Angebote

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

    €6 - €62
    Versiegelt
    €6 - €62
    48 Angebote

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