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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. Contratar a Blockchain Developers

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    49 trabajados encontrados, precios en EUR

    We are looking for someone that can do a full wallet re-design of a qt wallet to look something similar to the below. It should be done asap and also requires skills to be able to add a real-time graph like the example that will be getting the price of the coin and an option to see how much your coins were worth over a certain period of time. [iniciar sesión para ver URL]

    €155 (Avg Bid)
    €155 Oferta Promedio
    3 ofertas
    €9
    0 participaciones

    Just quite a simple task. The problem is I need to implement it with segwit to receive coin. The wallet can't receive coin ( not showing up in wallet for incoming coin ) but shows up in blockchain. Once you are done fixing, you will send me apk file to testnet before sending me the source code.

    €153 (Avg Bid)
    €153 Oferta Promedio
    19 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 ***

    €180 (Avg Bid)
    €180 Oferta Promedio
    6 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 ***

    €16 / hr (Avg Bid)
    €16 / hr Oferta Promedio
    6 ofertas

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

    €1185 (Avg Bid)
    €1185 Oferta Promedio
    7 ofertas
    hyperledger fabric+APP 6 días left
    VERIFICADO

    区块链-hyperledger fabric+APP开发: 开发一个基于区块链技术的区域能源自交易 APP

    €1889 (Avg Bid)
    €1889 Oferta Promedio
    5 ofertas
    blockchain project 6 días left
    VERIFICADO

    区块链-hyperledger fabric+APP开发: 开发一个基于区块链技术的区域能源自交易 APP

    €21 / hr (Avg Bid)
    €21 / hr Oferta Promedio
    4 ofertas

    Dear Freelancers, We’re looking for a Frontend developer and a BackEnd developer, to help startup our idea of an Egame/Gamble platform by using cryptocurrencies and the blockchain. What are we searching for? -English speaking -Experience with Blockchain/Crypto integration -Experience with Egames/casino development -Telegram or Discord user (to stay in contact with us) Our platform must c...

    €2401 (Avg Bid)
    €2401 Oferta Promedio
    33 ofertas

    We are going to build a decentralized exchange until Nov 30th. We want to choose true freelancers who have experience in Decentralized Exchange Platform. Please start your proposal with "I can do" and share your built DEX platform. Automatic bids or copy & pasted bids will be rejected. Regards.

    €1745 (Avg Bid)
    €1745 Oferta Promedio
    38 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.

    €20 (Avg Bid)
    €20 Oferta Promedio
    1 ofertas

    Hi, we are looking for freelancers who can help us customize certain open-source security solutions to use elements of blockchain ledgers and fit into our larger set of products and services. We might be interested in both project-based and pay-per-hour long term cooperation. The key requirements: - skilled at golang - experience with information security and ideally development of security prod...

    €19 / hr (Avg Bid)
    €19 / hr Oferta Promedio
    21 ofertas

    Cryptocurrency exchange startup is looking for senior php developer. Your responsibilities as a member of dev. team would be to write from scratch the cryptocurrency exchange platform. Your key contribution to the team would be to bring the technical knowledge about cryptocurrency/blockchain technology and security best practices. Technical requirements - familiarity with *nix ecosystem is mandat...

    €2145 (Avg Bid)
    €2145 Oferta Promedio
    50 ofertas

    We develop the game system separately. Please create a system that can purchase cards like the current Gods Unchained. Please collect all 10 packs and turn on the function which can display only rare. Please be sure to replace graphics. [iniciar sesión para ver URL]

    €907 (Avg Bid)
    €907 Oferta Promedio
    15 ofertas

    I need a coin for ICO. It should be listed on exchange

    €815 (Avg Bid)
    €815 Oferta Promedio
    18 ofertas

    I know about cryptocurrency, but I am making no profit from it So I am in need of someone to teach me more about cryptocurrency Investments and al I need to know so as to make profit from it

    €682 (Avg Bid)
    €682 Oferta Promedio
    16 ofertas
    Develop a paper wallet generator 4 días left
    VERIFICADO

    We want to develop a paper wallet generator for use in Cryptoart ([iniciar sesión para ver URL]). Specifically, we want to fork the code from [iniciar sesión para ver URL], then slightly modify the results page to fit our needs. More information found here: [iniciar sesión para ver URL]

    €1021 (Avg Bid)
    €1021 Oferta Promedio
    26 ofertas

    We need a smart contract developed with the ERC721 token. An API or SDK will need to be developed as well to communicate with the smart contract to develop our Real Estate Dapp. See below for the Dapp functionality for our MVP. This could be a long term engagement for our full Dapp, if the MVP developed is up to our standard. *1.* Information Architecture - create a database that houses the UUI...

    €9979 (Avg Bid)
    €9979 Oferta Promedio
    61 ofertas
    I NEED A FORKED EOS 4 días left
    VERIFICADO

    Fork the EOS block chain for this project

    €3445 (Avg Bid)
    €3445 Oferta Promedio
    21 ofertas

    I am looking for blockchain expert who can change design and integrate NEO into existing site built by Ruby on Rails. Here is the git repo of script. [iniciar sesión para ver URL] And I need to integrate btc, ETH, ERC20 and NEO. I have design ready. Please only apply only when 1. you have portfolio of exchange platform you created. 2. you are expert in Ruby on Rails. Budget:3000 Timeline: ...

    €2296 (Avg Bid)
    €2296 Oferta Promedio
    25 ofertas

    I need an experienced blockchain developer to develop a Decentralised Exchange like [iniciar sesión para ver URL] Presently the exchange allows ETH to ERC20 Tokens. I want One particular Token to ERC20 Tokens. Please bid.

    €827 (Avg Bid)
    €827 Oferta Promedio
    23 ofertas

    1. We are a Cryptocurrency Exchange based out of Lithuania 2. We are currently working on serving European Clients 3. We are in need of a Blockchain Developer who can support us for development and maintenance of our website/server and services 4. The Person should be well conversant with Website/Blog Creation, Server Set-Up, Blockchain Development 5. The Person would be hired as a Partner in the ...

    €11 / hr (Avg Bid)
    €11 / hr Oferta Promedio
    9 ofertas
    Waves platform expert 3 días left
    VERIFICADO

    I need a person who have worked on waves platform as a developer. I need some modification in waves platform open source mobile wallet application.

    €376 (Avg Bid)
    €376 Oferta Promedio
    4 ofertas

    Por favor, regístrate o inicia sesión para ver los detalles.

    Sellado Acuerdo de Confidencialidad

    we need a platform which can be used to share files over blockchain (Metadata) . files encrypted and print them using a verified/trusted printer on blockchain to make sure copyrights of founder/designer are secured and his file is not leaked . more details could be found here : [iniciar sesión para ver URL]

    €4805 (Avg Bid)
    €4805 Oferta Promedio
    17 ofertas

    we need a platform which can be used to share files over blockchain (Metadata) . files encrypted and print them using a verified/trusted printer on blockchain to make sure copyrights of founder/designer are secured and his file is not leaked .

    €2531 (Avg Bid)
    €2531 Oferta Promedio
    7 ofertas
    Finish a PHP project 3 días left
    VERIFICADO

    Add these to my current project: - Comprehensive guide of how to run all commands in ubuntu to create, delete, set passwords to wallets. (create new wallet, balance of each wallet master and clients, log file of all transactions, get seed password from wallets, etc.) - error message if there’s not enough funds in the admin wallets (example: sorry maximum amount to exchange right now is 0....

    €380 (Avg Bid)
    €380 Oferta Promedio
    24 ofertas

    I am more into crypto and developed an ecomerce store and had a coin developed from a dev before. I want to integrate that coin with my ecommerce store, I know basic knowlege but want to learn more technically in detail. Looking forward for a good teach in crypto. Thank you

    €543 (Avg Bid)
    €543 Oferta Promedio
    5 ofertas

    Multi coin mining portal development Looking developer from Chennai only

    €391 (Avg Bid)
    €391 Oferta Promedio
    9 ofertas
    Masternode ranking website 3 días left
    VERIFICADO

    I am looking for someone to create masternode ranking website similar to: [iniciar sesión para ver URL] [iniciar sesión para ver URL] [iniciar sesión para ver URL]

    €165 (Avg Bid)
    €165 Oferta Promedio
    13 ofertas

    We are looking for bidders on virtual currency bank in Philippines Projects: 1. ERC-20 Coin creation 2. Coin white paper writing 3. VC-PHP Exchange core 4. Mobile app for the exchange 5. Web app for the exchange. Note: Should be in Philippines. Should be a legitimate entity [iniciar sesión para ver URL]

    €2617 (Avg Bid)
    €2617 Oferta Promedio
    31 ofertas

    Hello, there is a platform called Flixxo. Flixxo is a decentralized video sharing platform where people can earn tokens called "Flixx" by uploading videos or watching videos. I need help creating a smart contract to split the revenue earned between content creators and myself. I need you to set a smart contract as a withdrawal address And set the splitting of flixx tokens within that s...

    €551 (Avg Bid)
    €551 Oferta Promedio
    21 ofertas
    i need changes for my ICO website 2 días left
    VERIFICADO

    website is built in lavarel, ubuntu make it mobile and iPAD responsive + deploy tokens (truffle) on mainnet.

    €157 (Avg Bid)
    €157 Oferta Promedio
    13 ofertas

    I need Bitcoin wallet with good features

    €710 (Avg Bid)
    €710 Oferta Promedio
    22 ofertas

    We are looking for someone that can do a full wallet re-design of a qt wallet to look something similar to the below. It should be done asap and also requires skills to be able to add a real time graph like the example that will be getting the price of the coin and a option to see how much your coins were worth over a certain period of time. [iniciar sesión para ver URL]

    €890 (Avg Bid)
    €890 Oferta Promedio
    19 ofertas

    I need you to develop some software to store bitcoin

    €16 / hr (Avg Bid)
    €16 / hr Oferta Promedio
    17 ofertas

    I need you to develop desktop crypto currency wallet

    €47 / hr (Avg Bid)
    €47 / hr Oferta Promedio
    32 ofertas
    Decentralized Exchange Platform 1 día left
    VERIFICADO

    We are going to build a decentralized exchange until Nov 30th. Front-end is done. You need to work with back-end . You only need to add BTC, ETH, SKX (our coin) as trading pairs. Please share your DEX experiences on the proposal or bids will be rejected. Regards.

    €908 (Avg Bid)
    €908 Oferta Promedio
    23 ofertas

    - I need detail how to make etc & eth mining pool by using open source ([iniciar sesión para ver URL]) in unbutu 16.04.

    €163 (Avg Bid)
    €163 Oferta Promedio
    6 ofertas
    Evaluation AD 1 día left
    VERIFICADO

    Helps with daily calendar management, scheduling of meetings, correspondence, and note-taking. Scheduling & communications between staff and company members, screening calls and emails and responding when appropriate. There will be some items of personal and business assisting in order to alleviate stress and time restraints from the owner so he can focus on direction of the spaces and c...

    €112 (Avg Bid)
    €112 Oferta Promedio
    2 ofertas

    I am looking to hire a team of individuals that have experience working on cryptocurrency projects. This project is mostly coded in Golang. I need the following: Developers that is familiar with Golang Developer that is experience with javascript (knowledgeable in Node.js and electron framework) Familiar with building executables for windows, linux and mac. Should know CI/CD as well Speed and ac...

    €7067 (Avg Bid)
    €7067 Oferta Promedio
    40 ofertas
    Create a new Crypto Currency 45 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.

    €2996 - €4993
    Destacado Sellado Acuerdo de Confidencialidad
    €2996 - €4993
    58 ofertas
    €95 Oferta Promedio
    18 ofertas

    I need you to develop a software for bitcoin transaction

    €49 / hr (Avg Bid)
    €49 / hr Oferta Promedio
    24 ofertas

    Looking for a team to build back-end modules for an cryptocurrency wallet application. This is part of bigger overarching project and repeat business will happen on completion of each module. Using QT5.11. Please contact us for further information.

    €20 / hr (Avg Bid)
    €20 / hr Oferta Promedio
    17 ofertas

    Hi! I need a website developed regarding crowd funding platform. You can develop that on WordPress, Laravel, PHP whatever you wish. I have attached a doc file named project_details. Check that & send me your best quote, time frame & any other details you may need. I need this project to be started asap. So, if you can complete within 14 days that will be perfect. You also have know about b...

    €13 / hr (Avg Bid)
    €13 / hr Oferta Promedio
    15 ofertas

    i m looking for a c++ expert with blockchain knowledge, i have all source and now just need to customize and setting the ui to core. if you are not expert this area don;t bid here. This is for learning purpose.

    €20 / hr (Avg Bid)
    €20 / hr Oferta Promedio
    18 ofertas
    Build a Decentralized Exchange 6 horas left
    VERIFICADO

    We are going to build a decentralized exchange that provides fast transaction speed. We will use our "proxy blockchain" idea. Please check document. Is it possible idea? It should be finished until 30th Nov. If you read document and confident, please start your proposal with three dashes. It is ongoing project and we hope long term relationship with you.

    €1953 (Avg Bid)
    €1953 Oferta Promedio
    31 ofertas

    We are blockchain company based on Los Angeles and open new blockchain project now. Looking for Ethereum blockchain developer who has 4 years experience at least. Don't bid agency, only bid developer. We will have test.

    €19 / hr (Avg Bid)
    €19 / hr Oferta Promedio
    28 ofertas