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.

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    34 trabalhos encontrados, preços em EUR

    We are looking for qualified developers/team to build the Blockchain application for an Enterprise company in Supplychain & logistics industry. Project Involves multiple phases - Technology Architecture, Smart contracts, Dapps development to track the product from the Manufacturing process till the consumer delivery Application maintenance.

    €19 / hr (Avg Bid)
    €19 / hr Média
    15 ofertas

    i need to desighn a system where two persons can make a contract between them just like using a phone to enter their details and frame an econtract like the given contract is valid for how many days ,and what are the things which can breach it (assumptions).these data get stored in such a way that blockchain can be implemented.

    €37 (Avg Bid)
    €37 Média
    1 ofertas

    We are an cryptocurrency exchange which want to expand our services with an API. The API user needs to register and authenticated through Laravel Passport (this also needs to setup) or on Lumen (please advise). The API needs to do the following: 1. Make a wallet for a cryptocurrency 2. Check the amount of coins available on orderbook 3. Taking buy/sell orders on the exchange 4. Check the balances...

    €554 (Avg Bid)
    €554 Média
    32 ofertas

    i need to create a token and integrate it to the website.

    €366 (Avg Bid)
    €366 Média
    17 ofertas

    Hi I am looking for someone to create an app on the ethereum network. Our app is complete already. We just need to add the eth smart contracts. Please have experience and be available to start doing work.

    €692 (Avg Bid)
    €692 Média
    19 ofertas
    ethereum developer 6 dias left
    VERIFICADO

    Hi I am looking for someone to create an app on the ethereum network. Our app is complete already. We just need to add the eth smart contracts. Please have experience and be available to start doing work.

    €572 (Avg Bid)
    €572 Média
    15 ofertas

    I have forked a dapp and turned into a similar game, but one of the functions is not working. It's developed on tron blockchain. I need you to see the smart contract and see what needs to be fixed.

    €145 (Avg Bid)
    €145 Média
    10 ofertas
    ICO Bounty Hunter Required 6 dias left
    VERIFICADO

    We need an experienced bounty and airdrop coordinator for our upcoming ICO. The successful applicant will have references of past work and evidence of the capabilities required. Full management of the process e2e required. Pre-ICO starts in May 2019. Please provide a high-level plan on what activities you will carry out to ensure a successful ICO bounty campaign and how long. The founders are...

    €11 / hr (Avg Bid)
    €11 / hr Média
    5 ofertas
    create a masternode coin! 6 dias left
    VERIFICADO

    i need to change my current erc20 token to a masternode token like dash i already have own erc20, just need to swap it.

    €443 (Avg Bid)
    €443 Média
    12 ofertas

    Need it done in 48 hours, the coin is a pow coin.. The developer that will do this must have it done in 48 hours.

    €1350 (Avg Bid)
    €1350 Média
    7 ofertas

    I am looking for a programmer to develop a birth registration application in solidity, can be a simple application

    €398 (Avg Bid)
    €398 Média
    7 ofertas
    Looking for crypto trader 5 dias left
    VERIFICADO

    We are a company based in Dubai and We are looking for experienced freelance traders, who can join our dynamic and dedicated team. Who are we? Teroxx is one of the first digital asset and digital currency trading houses in the world! Working closely with regulators, Teroxx is on its way to implement an international concept for cryptocurrency trading and investments in blockchain technology and i...

    €48 / hr (Avg Bid)
    €48 / hr Média
    15 ofertas

    Hello, We want to create a crypto-asset which here is the context: Our company FAZUP manufactures and markets a device that greatly reduces the amount of electromagnetic waves absorbed by smartphone users. It is an extra fine passive antenna, in the form of a patch, which is positioned very precisely on the back of the mobile phones, with respect to their main antenna location. The FAZUP patch r...

    €13 / hr (Avg Bid)
    €13 / hr Média
    21 ofertas

    Need turnkey solution with source code, training and support : Liquidity aggregator for own cryptocurrency exchange. REST API, WebSockets, minimal 3 platform: Binance, Bitfinex, Huobi Attach description and indicators

    €3802 (Avg Bid)
    €3802 Média
    30 ofertas

    The topic of the Blog is : What is blockchain (including its features) and types of blockchain (Public, Private, and Consortium blockchain) Notes: a)Content should be unique and professional b)The tone of the blog should be user-friendly and easy to understand c)It should not be copied/duplicate from any source on the internet d)Experience in this blockchain technology would be preferred e)Shou...

    €16 (Avg Bid)
    €16 Média
    3 ofertas

    We need an easy to understand video about what the blockchain can bring to enterprises and for private use. The length is maximum 90 seconds and it needs to explain: 1] What is the blockchain 2] What are possibilities on the blockchain 3] Assets/aliases on the blockchain 4] Exchanges and transactions on the blockchain. Example of the quality and look-feel we expect: [fazer login para ver a URL] ...

    €901 (Avg Bid)
    €901 Média
    38 ofertas

    Hello, I need to find someone who can create a Betting/Game Dapps based on the Tronx blockchain For example: [fazer login para ver a URL] [fazer login para ver a URL] You can provide me with game ideas, and I will choose. Regards

    €2621 (Avg Bid)
    €2621 Média
    26 ofertas

    We need to do penetration testing to our smart contract on Rinkeby and need to static analysis as well. We need to complete this static & dynamic analysis ASAP before you launch the contract on mainnet. The developer needs to have expertise in Solidity and have extensive experience in Solidity smart contract audit and penetration testing. Please follow up with portfolios.

    €640 (Avg Bid)
    €640 Média
    12 ofertas

    We have a running DEX but on running market [fazer login para ver a URL] tech spec we want. Specifically we want to build a [fazer login para ver a URL] like exchange. 1. Front end totally change (use react or any other tech) 2. Full source code need to be provided 3. Backend server 4. Token listing/integration process 5. Deploy on digital ocean 6. 2 color theme daymode and night mode ** Al...

    €1373 (Avg Bid)
    €1373 Média
    22 ofertas

    Hello, I need to find someone who can create a decentralized trading platform based on the Tronx blockchain For example: [fazer login para ver a URL]

    €2205 (Avg Bid)
    €2205 Média
    30 ofertas

    We need to do penetration testing to our smart contract on Rinkeby and need to static analysis as well. We need to complete this static & dynamic analysis ASAP before you launch the contract on mainnet. The developer needs to have expertise in Solidity and have extensive experience in Solidity smart contract audit and penetration testing. Please follow up with portfolios.

    €617 (Avg Bid)
    €617 Média
    11 ofertas

    We are looking for Blockchain Expert who can work on our various projects. There are so many tasks that you have to implement and if you are right person, it will be long term contract. I'm looking for Real Expert have at least 2 years of experience in this field. You are needed to show some previous works that you have done and explain about it. Must work on US timezone. There might be over...

    €19 / hr (Avg Bid)
    €19 / hr Média
    35 ofertas

    I need blockchain developers, for crypto games. Slots, roulette, dice

    €1519 (Avg Bid)
    €1519 Média
    21 ofertas

    Need developer that had done a Crypto virtual banking or ICO crowdfunding site that builds under ethereum blockchain technology ERC20. The developer needs to know code igniter or Laravel to start a project. A developer needs to know Linux server, Plesk. It's very important that the website needs to be able to accept cryptocurrencies like bitcoin, Eth, LTC, and other Token. A developer needs t...

    €1159 (Avg Bid)
    €1159 Média
    76 ofertas

    I need crypto marketing expert that can convert massive audience to my crypto project through airdrop and bounty tasks on Bitcointalk, telegram and other crypto related websites.

    €123 (Avg Bid)
    €123 Média
    8 ofertas

    hi I'm Faten I'm senior student CIS major I work on my senior project and I need a lot of help and someone have good experience in python and blockchain concept. the idea of my project is too simple I have already the most of important part of the code but just o want to add more features to the project. the project needs to build: - 2 web GUI and connect to the blockchain - generates...

    €177 (Avg Bid)
    €177 Média
    13 ofertas

    i am looking to customize peatio so that orders are settled onchain after trade has occurred with something like lamden clove , and deploy to AWS . the finished product will be a DEX

    €1117 (Avg Bid)
    €1117 Média
    16 ofertas

    Basic Simulation of Private Block-chain Environment. Concurrency & bitcoin not required. Simulate the basic definition of block-chain. Growing list of records, called blocks, which are linked using cryptography. Each block contains a cryptographic hash of the previous block, a timestamp, and transaction data. (an open, distributed ledger concept.) You may provide me already available implement...

    €7 - €19
    €7 - €19
    0 ofertas
    i want a masternode software 1 dia left
    VERIFICADO

    I need an expert to develop a masternode software for me. I would like this software to be developed for Windows using Java or any other compatible programming language. software features include coin, masternode, and staking. Interested developer is required to be well experienced in crypto-currency, masternode and blockchain technology in general.

    €443 (Avg Bid)
    €443 Média
    20 ofertas
    Edit UI of Block explorer and setup 21 horas left
    VERIFICADO

    We are looking for a blockexplorer similar to this [fazer login para ver a URL] There is open source code for this but needs a few ui changes [fazer login para ver a URL] [fazer login para ver a URL] Showing also network, top 100, api, movment.

    €160 (Avg Bid)
    €160 Média
    9 ofertas

    We are looking for a developer with proven knowledge in the installation/setup of BITEXCHANGE ([fazer login para ver a URL]) / crypto exchange The exchange script is installed, but we need some changes done, and hopefully have a long term relationship with a development team. If the work is satisfactory , we will continue with additional jobs for ERC-20 token integration, liquidity management mo...

    €183 (Avg Bid)
    €183 Média
    14 ofertas

    I am located in the United States. We have many regulations that make it difficult to do an ICO. Looking to establish an ICO from a cryptocurrency friendly Country. Helpful if you have experience marketing cryptocurrency ICO"s

    €627 (Avg Bid)
    €627 Média
    25 ofertas

    We are looking for blockchain developers to help us build or fork a blockchain for our new project.

    €2349 (Avg Bid)
    €2349 Média
    47 ofertas
    Build a CryptoCurrency Exchange. 14 dias left
    VERIFICADO

    we want to build a cryptocurrency exchange not token exchange not ICO website crypto exchange BTC BCH ETH LTC XRP NEO USDT TRX all coins should be able to trade with each other as pairs. *** you can download requirements document and read that in depth and word by word *** if you want to have a chance to choose as this project freelancer, you should read t...

    €5292 - €8820
    Destacado Secreto
    €5292 - €8820
    96 ofertas

    Artigos da Comunidade dos Principais Blockchain