Blockchain is a distributed register that is used to maintain a continuously growing list of records, called blocks. It has revolutionary applications in finance (such as cryptocurrencies like Bitcoin) and decentralized applications like online voting.

Πρόσλαβε Blockchain Developers

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    40 δουλειές που βρέθηκαν, με τιμές EUR

    I want ERC20 tokens developed, if you can do that, please place a bid.

    €984 (Avg Bid)
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    Blockchain/Crypt and Exchange Developer 6 μέρες left
    ΕΠΙΒΕΒΑΙΩΜΕΝΟ

    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.

    €389 (Avg Bid)
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    Basic Messaging Application using Hyperledger Fabric. 6 μέρες left
    ΕΠΙΒΕΒΑΙΩΜΕΝΟ

    I want to have a very basic application created to demonstrate basic usage of Hyperledger fabric. I want an application that allows users to send each other messages. 1. Needs to use Hyperledger Fabric 2. Every message that is sent would be an Asset 3. Ability to retrieve messages sent to you or sent by you 4. You only have access to the messages that are sent to you or you sent yourself I am ...

    €375 (Avg Bid)
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    YEP COIN GATEWAY -- 2 6 μέρες left
    ΕΠΙΒΕΒΑΙΩΜΕΝΟ

    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.

    €551 (Avg Bid)
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    I am looking for a person to build the back-end of a portal that allows me to integrate my current clients and new clients, users, investors and companies to launch new STO's native to the platform. Similar to polymath. Currently I have the front-end with wordpress @ Http://[κάνε είσοδο για να δε&iota...

    €1244 (Avg Bid)
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    Create a cryptocurrency (coin) 5 μέρες left
    ΕΠΙΒΕΒΑΙΩΜΕΝΟ

    Hi, I need a crypto coin. People should help to promote the coin and run the ICO successful. Payment will be released only after the ICO gets completed. Purpose of the coin will be discussed privately. I m planning to list that in YOBIT,i think it is free of cost. But not sure.(Please check). White paper also required. Please suggest ur designs and ideas to successfully run the ICO and to get list...

    €766 (Avg Bid)
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    I have the source code for the project. Also it was completed almost. but I need to fix some bugs in there. If you have many experiences in iOS blockchain wallet app, please bid in here. I will discuss about it over chat.

    €286 (Avg Bid)
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    block chain development 5 μέρες left
    ΕΠΙΒΕΒΑΙΩΜΕΝΟ

    need to hire a block chain developer to assist us on a project. we are building a website with many functionalities however we need to develop some apis that require knowledge in blockchain. Please note that if you get awarded this project expect to be occupied with us till the end of 2019

    €503 (Avg Bid)
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    [Removed by Freelancer.com Admin] Only Looking for Blockchain Developers here. I AM NOT LOOKING FOR PEOPLE WHO BUILT WORDPRESS WEBSITE FOR BITCOIN. I AM LOOKING FOR AN ACTUAL BLOCKCHAIN DEVELOPER HERE. === Bid this project ONLY IF YOU HAVE ACTUALLY BUILD A PROJECT ON BTC NODE, ON SOLIDITY BEFORE. I don't need a WORDPRESS NULLED TEMPLATE FAKE DEVELOPER.

    €21 / hr (Avg Bid)
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    Blockchain Development 5 μέρες left
    ΕΠΙΒΕΒΑΙΩΜΕΝΟ

    Startup project Development of financial service on Rust Requirements: Blockchain expert Rust development experience

    €30 / hr (Avg Bid)
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    Translate blockchain files from English to Korean. 5 μέρες left
    ΕΠΙΒΕΒΑΙΩΜΕΝΟ

    I have two files which will be translated from English to Korean. The content is about blockchain. I am looking for a Korean translator. Please note that the translator must be Korean. For more information, welcome to contact me.

    €72 (Avg Bid)
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    In this android app I want to integrate a reward program based on a Crypto Currency ([κάνε είσοδο για να δεις το URL]). The reward program would drive more engagement as it is based on crypto currency and users will have complete ownership of rewards as it is based on blockchain. ...

    €527 (Avg Bid)
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    Blockchain Developer needed to develop a secure and decentralized file transfer application.

    €448 (Avg Bid)
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    Create simple erc20 toke and deploy 4 μέρες left
    ΕΠΙΒΕΒΑΙΩΜΕΝΟ

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

    €37 (Avg Bid)
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    Simple cryptocurrency music download site for one song 4 μέρες left
    ΕΠΙΒΕΒΑΙΩΜΕΝΟ

    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...

    €240 (Avg Bid)
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    Token modeling 4 μέρες left
    ΕΠΙΒΕΒΑΙΩΜΕΝΟ

    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)
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    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...

    €17 / hr (Avg Bid)
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    Contribution to blockchain projects 4 μέρες left
    ΕΠΙΒΕΒΑΙΩΜΕΝΟ

    Multiple Blockchain developers needed to contribute to various blockchain projects on repositories like github. We are a new blockchain company and are looking for developers. Payment will be based on hourly efforts, and prominent developers could be offered full time contracts. General terms: The developer is required to join the organization on github The submitted code must consist of clean ...

    €15 / hr (Avg Bid)
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    Good experience in monero or fork of monero is vital. Particularly interesting is experience of building and extending the std monero wallet (all versions - Linux/Mac/Windows)   Experience of testing and releasing hard (upgrade) forks, gitian builds and CI.

    €218 (Avg Bid)
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    Node: We need one team/company 4-10 people for work this project Fullstack experence about Cryptocurrent and Revenue system. - Fund Bitcoin, Ethererum, USDT, BCH, TUSD ... - Requairement: + Complete this project on time deadline 2-3 week. + Design UI/UX Cyberpunk style, another better for crypto. + Whitepaper (Writer, Infographic ...) + Building Website (Lending page) + Building App (An...

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    A Blockchain Developer : Blockchain project collaboration offer ([κάνε είσοδο για να δεις το URL]) ================================== The team leading the Wastechains project ([κάνε είσοδο για να δ...

    €7 / hr (Avg Bid)
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    We need a blockchain experienced for a long-term project

    €2293 (Avg Bid)
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    18 προσφορές

    If you are a great writer able to provide engaging content on cryptocurency, blockchain, please feel free to place bid in this project. please don't bid without any prior experience on cryptocurrency, blockchain as well as lack of highly skilled writing ability. Paying INR 120 for each 600 words article. Thanks and regards.

    €3 / hr (Avg Bid)
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    Sync Woocommerce with Cryptocurrency Asset Transfer 3 μέρες left
    ΕΠΙΒΕΒΑΙΩΜΕΝΟ

    Looking for a cryptocurrency experience web developer to sync our woocommerce store with a blockchain wallet to deliver items as orders are completed.

    €1112 (Avg Bid)
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    Chat app in blockchain 3 μέρες left
    ΕΠΙΒΕΒΑΙΩΜΕΝΟ

    My client would like to build chat app in blockchain. We need fast delivery so only those have done before to bid here. You have to show me what you have done with screenshots as proof. You may hide your client logo and name. Here is the detail (build in iOS and Android). Phase 1: Basic - Chat in text and audio message - Group chat (public and private) - IBM Watson Translator (API) - Chat m...

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    Build me a telegram refferal system.. 3 μέρες left
    ΕΠΙΒΕΒΑΙΩΜΕΝΟ

    PM me for details. The system checks if participants is not a fake telegram account, tells them to perform some task and saves their tron address.

    €137 (Avg Bid)
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    If you are a great writer able to provide engaging content on cryptocurency, blockchain, please feel free to place bid in this project. please don't bid without any prior experience on cryptocurrency, blockchain as well as lack of highly skilled writing ability. Paying INR 120 for each 600 words article. Thanks and regards.

    €4 / hr (Avg Bid)
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    Необходимо создать смарт контракт на базе Ethereum для проведения ICO подобное Ice Rock Mining ([κάνε είσοδο για να δεις το URL]), разработка сайта ICO с кабинетом инвестора, все вопросы пишите мне

    €409 (Avg Bid)
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    Blockchain developer 3 μέρες left

    I need a blockchain developer to develop [κάνε είσοδο για να δεις το URL]

    €4075 (Avg Bid)
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    Deploy Multi Org Hyperledger Fabric network with Kafka orderers (2 orderers, 3 Orgs - Each org has 3 peers) - Configure CA and MSP, etc...

    €203 (Avg Bid)
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    8 προσφορές

    If you are a great writer able to provide engaging content on cryptocurency, blockchain, please feel free to place bid in this project. please don't bid without any prior experience on cryptocurrency, blockchain as well as lack of highly skilled writing ability. Thanks and regards.

    €3 / hr (Avg Bid)
    €3 / hr Μέση Προσφορά
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    Digital bank simulate 1 μέρα left

    I need an app for Android. I already have a drawing for it, I just need it built. I would like an application that only simulates transactions, as presented in the link. [κάνε είσοδο για να δεις το URL] we want to find the right team for the development of this system in blockch...

    €199 (Avg Bid)
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    Hard fork of existing altcoin 1 μέρα left
    ΕΠΙΒΕΒΑΙΩΜΕΝΟ

    Want to hard fork existing altcoin. Want to make a few simple changes. Need windows, Mac and Linux wallets. GitHub set up and open source explorer set up.

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    Blockchain cryptocurrency web wallet 1 μέρα left
    ΕΠΙΒΕΒΑΙΩΜΕΝΟ

    I need a new web wallet of single cryptocurrency. I need you to design and build it. blockchain

    €191 (Avg Bid)
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    Hyperledger Fabric - Use cases wanted 1 μέρα left
    ΕΠΙΒΕΒΑΙΩΜΕΝΟ

    Hi there, I am willing to buy any completed blockchain solution (hyperdledger, ethereum, quorum, corda). I need the use case explanation and cost. Please post me any solution you have developed and you have the rights to sell. Thanks

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    A Blockchain Developer : Blockchain project collaboration offer ([κάνε είσοδο για να δεις το URL]) ================================== The team leading the Wastechains project ([κάνε είσοδο για να δ...

    €7 / hr (Avg Bid)
    €7 / hr Μέση Προσφορά
    12 προσφορές

    Blockchain project collaboration offer ([κάνε είσοδο για να δεις το URL]) ================================== The team leading the Wastechains project ([κάνε είσοδο για να δεις &...

    €483 (Avg Bid)
    €483 Μέση Προσφορά
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    ERC20 tokens programming, professionals only. 12 ώρες left
    ΕΠΙΒΕΒΑΙΩΜΕΝΟ

    -Programming ERC20 tokens -Programming smart contracts -Programming stake rewards with monthly increases -Potentially adding to a existing wallet -Must have plenty of experience -References of project required non negotiable

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    I need crypto currency instant converting website similar as coinswitch with some customizations Integrate with multiple crypto exchanges and can provide best price to user for exchanging crypto currencies The web application should be developed on Django/Python The applicants must and should have done the similar type of application will be given prority The application should be completed the p...

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    Get data on wallet detention and sales of 30 ICOs 9 ώρες left
    ΕΠΙΒΕΒΑΙΩΜΕΝΟ

    Hi we are looking for data regarding crypto investors in ICOs. We are interested by any detailed information concerning the profile of investors in 10 of the biggest ICOs in 2017, in 2018, in 2019. The idea is, for each ICO, to compile data concerning the wallets detention. More precisely, create a databasis with: - the list of addresses that owned tokens during the initial sale (ICO) - the amou...

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    Κορυφαία Blockchain Άρθρα Κοινότητας