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. Zaměstnat Blockchain Developers

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    53 zakázek nalezeno, ceny v EUR

    Hi, Damian. I am Eugene for PokerTRON app. It seems we can work with this account.

    €1718 (Avg Bid)
    €1718 Průměr. nabídka
    4 nabídky

    I need a programmer that can handle a project with confidentiality assurance. Necessary skills include (but not limited to): Django, MySQL DB and Blockchain.

    €1964 (Avg Bid)
    €1964 Průměr. nabídka
    13 nabídky

    I need you to develop crypto currency wallet

    €31 / hr (Avg Bid)
    €31 / hr Průměr. nabídka
    28 nabídky

    I need someone who will get me an ABI that will work for my smart contract verification on Etherscan and if possible other details. the smart contract code can be found here [pro zobrazení URL se přihlaste]

    €41 (Avg Bid)
    €41 Průměr. nabídka
    5 nabídky

    My team need needs help setting up a mining pool for a cryptocurrency project. You will need experience with nodejs, golang, cryptocurrency, p2p, stratum web servers and yiimp.

    €18 / hr (Avg Bid)
    €18 / hr Průměr. nabídka
    7 nabídky

    Since upgrading to ethOS 1.3.3 when I try to connect to our pool using stratum I get the error. "Could not subscribe: code:-3 message:Method not found" We need to be able to connect with new versions of ethOS 1.3.3. I don't know what changed. Did stratum finally standardize? Can the pool be modified to work with stratum now? I did not see anything about stratum in the release ...

    €177 (Avg Bid)
    €177 Průměr. nabídka
    2 nabídky
    Bitcoin Vendor Shop for TOR 6 dní left
    OVĚŘENÉ

    I want btc vendor shop where i can sell stuff 100% anonymous hidden on tor. You will setup the website and hosting on TOR.

    €117 (Avg Bid)
    €117 Průměr. nabídka
    5 nabídky
    Create an airdrop smart contract 6 dní left
    OVĚŘENÉ

    Looking for a freelancer who can create a smart contract which allows to bulk send airdrop bounty from and existing database.

    €170 (Avg Bid)
    €170 Průměr. nabídka
    16 nabídky
    Smart Contract Security Audit 6 dní left
    OVĚŘENÉ

    Perform a security audit for an ERC721 smart contract. Details about the project, including the white paper, can be found in the following website: [pro zobrazení URL se přihlaste]

    €1408 (Avg Bid)
    €1408 Průměr. nabídka
    17 nabídky

    I need ERC20 Token creation in ethereum mainnet and an ICO website for that token.

    €477 (Avg Bid)
    €477 Průměr. nabídka
    12 nabídky

    Design and develop a Blockchain layer between the existing Recruitment & HR System. Creating the smart contract based on the business logic. Multiple smart contract development required.

    €468 (Avg Bid)
    €468 Průměr. nabídka
    11 nabídky
    Ethereum - Solidity help 5 dní left
    OVĚŘENÉ

    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

    €15 (Avg Bid)
    €15 Průměr. nabídka
    2 nabídky

    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...

    €14322 (Avg Bid)
    €14322 Průměr. nabídka
    40 nabídky
    Setup Yiimp Mining Pool Website 5 dní left
    OVĚŘENÉ

    I need someone to help me setup my own mining pool, preferably Yiimp using open source github code. I need it does as soon as possible. Please bid if you are sure that you can do it and done this before. The cheaper price will win this project. Thanks all in advance.

    €26 (Avg Bid)
    €26 Průměr. nabídka
    1 nabídky
    Build a Mining Pool Website 5 dní left
    OVĚŘENÉ

    Build a Mining Pool Website Like [pro zobrazení URL se přihlaste] [pro zobrazení URL se přihlaste]

    €135 (Avg Bid)
    €135 Průměr. nabídka
    11 nabídky

    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.

    €1058 (Avg Bid)
    €1058 Průměr. nabídka
    23 nabídky
    Develop ICO Website 4 dní left
    OVĚŘENÉ

    Develop the ICO website with full function. You must have to have previous project source code. We need immediately so if you want to start from scratch don't bid. Submit your ICO website I'll check all function and send you a private message. Thanks!

    €398 (Avg Bid)
    €398 Průměr. nabídka
    17 nabídky

    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 - [pro zobrazení URL se přihlaste] - [pro zobrazení URL se přihlaste] - [pro zobrazení URL se přihlaste] - [pro zobrazení URL se přihlaste] - [pro zobrazení URL se přihlaste] - [pro zobrazení URL se přihlaste] I need su...

    €2669 (Avg Bid)
    €2669 Průměr. nabídka
    13 nabídky

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

    €1513 (Avg Bid)
    €1513 Průměr. nabídka
    13 nabídky

    Hi, Iam interested in learning Block chain technology. I want practical exposure on languages or tools like Solidity, Ethereum, Smart contract, Golang etc.. Looking for a professional who is currently working on Block Chain technology.

    €141 (Avg Bid)
    €141 Průměr. nabídka
    3 nabídky

    Hi, We have a website in Drupal and I would need an expert to integrate coingate or coinbase Bitcoin payment on the website. I can share the API keys with the developer.

    €121 (Avg Bid)
    €121 Průměr. nabídka
    6 nabídky

    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.

    €808 (Avg Bid)
    €808 Průměr. nabídka
    18 nabídky
    Master Node Complete Project! 3 dní left
    OVĚŘENÉ

    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!

    €1081 (Avg Bid)
    €1081 Průměr. nabídka
    24 nabídky

    I want to launch a US Corporation that will churn out Apps and Software Products, one every few weeks and ultimately becomes one of the Major Software companies and can compete with CA/Microsoft/Oracle/IBM etc. I am looking for partners/co-founders/ who can contribute their work to this project and make it a success. My role will be to bring every contributor to the project together and invest the...

    €19 / hr (Avg Bid)
    €19 / hr Průměr. nabídka
    9 nabídky

    I'd like to build a trading engine with using REST API. These are the optional api service what I am thinking of. - [pro zobrazení URL se přihlaste] - [pro zobrazení URL se přihlaste] - [pro zobrazení URL se přihlaste] 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 Engi...

    €614 (Avg Bid)
    €614 Průměr. nabídka
    15 nabídky

    Key features For Coin Development 1 Setting up of Cryptocurrency node servers 2. Set up coin parameters 3. Generation of Blockchain 4. Coin Generation 5. Pool mining 6. Web Explorer 7. Web Wallet 8. Admin Wallet 9. Exchanger Connectivity API

    €1519 (Avg Bid)
    €1519 Průměr. nabídka
    18 nabídky

    Hi I have a ERC 20 Smart Contract with very basic functionality that I need to get audited Thanks

    €142 (Avg Bid)
    €142 Průměr. nabídka
    6 nabídky

    I need a professional blockchain developer to setup my ERC20 wallet app for Android, iOS and web within 7days if possible. My budget is $200 but I can consider increasing it if you impress me

    €573 (Avg Bid)
    €573 Průměr. nabídka
    18 nabídky

    I want you to read this paper from chapter 5-8 to understand the concept... I need you to take the Use cases from the white paper ( chapter 6&7) and make them in to Yellow paper meaning, write how it will be done technically... All I need is just the technical write up of how these use cases can be achieved I want to write a yellow on the project.. What I need is just the write down of the te...

    €436 (Avg Bid)
    €436 Průměr. nabídka
    10 nabídky

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

    €1504 (Avg Bid)
    €1504 Průměr. nabídka
    14 nabídky

    Dear Readers, We’re looking for a blockchain specialist with experience in building Dapps. A freelancer that can build a simple, basic but safe cryptowallet for the Tronplatform. ([pro zobrazení URL se přihlaste]) We want to be able to integrate this wallet with our future gameplatform. It should be able to function as a payment system for our platform. The product we’re looki...

    €754 - €1508
    Doporučené Zapečetěný
    €754 - €1508
    30 nabídky

    We are an ICO looking for a community manager. We need to build a community on different platforms: Facebook, Instagram, Linkedin, Reddit, Zendesk etc. The proficiency level of english is required and a photoshop knowledge is appreciated. Previous experience in ICO projects is required.

    €15 / hr (Avg Bid)
    €15 / hr Průměr. nabídka
    20 nabídky

    Sell my domain name ( [pro zobrazení URL se přihlaste]) if you can get be best proposal we can close the deal also apart from fees and feedback i will pay you a commission

    €38 (Avg Bid)
    €38 Průměr. nabídka
    4 nabídky
    ICO whitepaper writing 1 den left
    OVĚŘENÉ

    I need someone to write White paper for my upcoming Decentralized news Platform which consume Blockchain technology to Broadcast and censor news items through Smart Contracts.

    €18 (Avg Bid)
    €18 Průměr. nabídka
    9 nabídky

    we need a blockchain developer to fix an issue in our network. What should be fixed: - Unstable Network  - Upgrade Coin Wallets ( this mean upgrade servers and explorer and everything connected with our coin node ) We are looking for a long-term relationship, when everything is done!

    €138 (Avg Bid)
    €138 Průměr. nabídka
    7 nabídky

    the supply chain in the FCMG industry is currently trying to develop itself with the high trendiness of blockchain, due to that, it is required to make an academic research (thesis like) about what are the current practices used in the supply chain for the FCMG industry and what are the voids in those practices or issues that blockchain could solve. please keep in mind that the references should b...

    €238 (Avg Bid)
    €238 Průměr. nabídka
    37 nabídky

    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.

    €28 (Avg Bid)
    €28 Průměr. nabídka
    1 nabídky

    Need some expert writers who are experienced in cryptocurrency industry and blockchain technology. Technical writing experience is preferred. We need in-depth and well-researched articles.

    €78 (Avg Bid)
    €78 Průměr. nabídka
    26 nabídky

    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

    €384 (Avg Bid)
    €384 Průměr. nabídka
    4 nabídky

    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.

    €576 (Avg Bid)
    €576 Průměr. nabídka
    16 nabídky
    Bitshare core Development 1 den left
    OVĚŘENÉ

    I want to build my own blockchain using Bitshare Core. If you have experience in Bitshare core blockchain, please contact me. I want to hire true developer. Regards.

    €531 (Avg Bid)
    €531 Průměr. nabídka
    22 nabídky

    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.

    €362 (Avg Bid)
    €362 Průměr. nabídka
    14 nabídky
    digital currency based on bitcoin 22 hodiny left
    OVĚŘENÉ

    I need a professional to program a digital currency based on bitcoin. 1 - Change the reward rule by mining. 2 - Start the coin mining process through my miners.

    €483 (Avg Bid)
    €483 Průměr. nabídka
    19 nabídky
    QT wallet UI update and adding graph 22 hodiny left
    OVĚŘENÉ

    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. [pro zobrazení URL se přihlaste]

    €183 (Avg Bid)
    €183 Průměr. nabídka
    8 nabídky

    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.

    €161 (Avg Bid)
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    23 nabídky

    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 ***

    €181 (Avg Bid)
    €181 Průměr. nabídka
    8 nabídky

    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 Průměr. nabídka
    7 nabídky

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

    €1170 (Avg Bid)
    €1170 Průměr. nabídka
    8 nabídky
    hyperledger fabric+APP 5 hodiny left
    OVĚŘENÉ

    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

    €1933 (Avg Bid)
    €1933 Průměr. nabídka
    6 nabídky
    blockchain project 5 hodiny left
    OVĚŘENÉ

    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

    €20 / hr (Avg Bid)
    €20 / hr Průměr. nabídka
    6 nabídky

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