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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    248 работ(-а,-ы) найдено, цены указаны в USD
    Блокчейн проект 3 дней(-я) left

    Нам нужен специалист по блокчейн на постоянную работу.

    $170 (Avg Bid)
    $170 Ср. заявка
    2 заявок(-ки)
    c# backend developer 2 дней(-я) left

    Требования: C#, API integration (REST, WebSocket), Github, Nuget API интеграция блокчейн проектов Тестовое задание: Ответить, какие необходимы входные параметры метода, чтобы успешно отработала транзакция при вызове [войдите, чтобы посмотреть URL](..) [войдите, чтобы посмотреть URL]

    $2 - $8 / hr
    $2 - $8 / hr
    0 заявок(-ки)
    Smart Contract Development 6 дней(-я) left
    ПОДТВЕРЖДЕН

    Hello, I am in need of help developing a smart contract on Binance Smart Chain. You will be discussing the tokenomics, roadmap, and other aspects of running a smart contract. More specifically, you will need to be familiar with [войдите, чтобы посмотреть URL]'s vault & buyback rewards mechanism. This will be the main topic of discussion and where my confusion lies. Task: 30min - 1hr di...

    $39 / hr (Avg Bid)
    $39 / hr Ср. заявка
    8 заявок(-ки)
    Cold wallet development 6 дней(-я) left

    Hello, I am looking for company how can develop cold wallet

    $1500 (Avg Bid)
    $1500 Ср. заявка
    1 заявок(-ки)
    BSC Scanner 6 дней(-я) left

    BSC Scanner needed. [войдите, чтобы посмотреть URL] It has to scan bsc every X minutes for new coins/tokens that has already liquidity added and check if the value of Y addresses is reached. Then it should send email with: - link to bscscan - contract address (optional) eg. [войдите, чтобы посмотреть URL] X minutes & Y addresses are variables that I want to be able to change. Bid what you...

    $250 (Avg Bid)
    $250 Ср. заявка
    2 заявок(-ки)
    BTC Flashing software 6 дней(-я) left

    We want the software to do the below stuff: It should generate Btc Fake Transaction(flash btc) with the below features: - -Defined the time that the transaction can remain in the wallet - -Defined the charges of the blockchain networks for a quick confirmation - -VPN and TOR options included with proxy - -Can check the blockchain address before transaction - -Transaction can get full confirm...

    $13584 (Avg Bid)
    $13584 Ср. заявка
    1 заявок(-ки)

    We are a group of 4 people and we are looking for potential partnership with blockchain developer to help us finish our project and grow together. Requirements: ---Web3 -- Binance Tokens -- Ethereum Tokens -- Wallets -- Worked with Blockchain Protocols / API

    $1276 (Avg Bid)
    $1276 Ср. заявка
    23 заявок(-ки)
    Ethereum smart contract! 6 дней(-я) left
    ПОДТВЕРЖДЕН

    Hi- I need a small help. I have a smart contract, I connect with infura to write my data into Ethereum, when I do it by metamask, after each transaction that I submit, it goes to pending transactions, but when I do it through the api and infura, I still have to wait for the previous transaction to be completed and then I can submit a new transacation. Can you please help? Please share me your...

    $11 / hr (Avg Bid)
    $11 / hr Ср. заявка
    4 заявок(-ки)
    Golang developer 6 дней(-я) left

    Looking for a senior Golang developer for our blockchain project This position will last for the next several months, it's not a short term job, not small job. So, if you are looking for only small/short-term jobs, please don't apply Excited to work with you guys

    $21 / hr (Avg Bid)
    $21 / hr Ср. заявка
    2 заявок(-ки)
    CREAM FINANCE FORK 6 дней(-я) left

    Somos un equipo que trabaja para dar vida a un proyecto blockchain defi en binance smart chain. En esta etapa, estamos construyendo nuestra comunidad y trabajando en el desarrollo de nuestro protocolo central, sistema de gobierno y contratos de crowdpooling. Decidimos agregar una nueva característica (protocolo de préstamos) además de nuestro protocolo. Para esta nueva carac...

    $1789 (Avg Bid)
    $1789 Ср. заявка
    7 заявок(-ки)

    We want to implement SOCKS proxy support in the Nethermind project, from the source code at version 1.9.53. The objective is to fully contain a node behind TOR.

    $29 / hr (Avg Bid)
    $29 / hr Ср. заявка
    5 заявок(-ки)
    create a crypto token and list on exchange, write whitepaper 6 дней(-я) left
    ПОДТВЕРЖДЕН

    write white papper need to create Ethereum based token list on exchange

    $488 (Avg Bid)
    $488 Ср. заявка
    11 заявок(-ки)
    Make me a erc 20 token 6 дней(-я) left

    I want my own erc 20 token. It will just be a fun token based on dogecoin. Just want it for purchasing and tipping people

    $450 (Avg Bid)
    $450 Ср. заявка
    8 заявок(-ки)
    eth expert and specialist 6 дней(-я) left
    ПОДТВЕРЖДЕН

    Dear freelancer, Im trying to focus on investing in cryptocurrencies and i think that eth is a good one to start with , and i want someone who can be a provider, if you can please contact me

    $1123 (Avg Bid)
    $1123 Ср. заявка
    21 заявок(-ки)
    THE TAW PROJECT 6 дней(-я) left

    I'm seeking someone who can provide an architectural design for a software system for a BlockChain API for a coin project should be under 300 hrs [Removed by Administration; Terms and Conditions : 13. Communication With Other Users]

    $4500 (Avg Bid)
    $4500 Ср. заявка
    2 заявок(-ки)

    I am interested in establishing a exchange trading platform for cryptocurrency and ICO. I would like to obtain more information about what you can offer and create, for now will be only the backend in golang developed in API's, the idea is offer and add every new crypto currency to the platform I am looking for a very similar platforms as the platforms listed below. [войдите, чтобы посмотрет...

    $20 (Avg Bid)
    $20 Ср. заявка
    2 заявок(-ки)
    I need ICO's created for potential Cryptocurrencies 6 дней(-я) left
    ПОДТВЕРЖДЕН

    Looking for someone who can create ICO's for 2 potential cryptocurrencies will pay for this and also offer a part of founders share (5%) should it become successful. This job is more of a collaboration so we could go back and fourth with ideas and would also need your advice on certain parts, communication must be key and you must have a strong background in to the cryptocurrency world.

    $532 (Avg Bid)
    $532 Ср. заявка
    14 заявок(-ки)
    Looking for a erc20 token developer. 6 дней(-я) left
    ПОДТВЕРЖДЕН

    i am looking for a experienced developer to build a erc20 token, reference - [войдите, чтобы посмотреть URL] its a financial token, would also be able to develop a exchange platform, ico. share your profile on related work. add erc20 to your bid.

    $6624 (Avg Bid)
    $6624 Ср. заявка
    2 заявок(-ки)
    Whitepaper DeFi blockchain 6 дней(-я) left
    ПОДТВЕРЖДЕН

    I need you to write a whitepaper (light paper) for DeFi project. It should include my main statements which I will forward to you. It should have high-end design. You have to be native english-speaker (US or UK only)

    $914 (Avg Bid)
    $914 Ср. заявка
    14 заявок(-ки)
    Need blockchain developer 6 дней(-я) left

    I have website developed by React.js. I need to change something. Requirements: +5 years of React.js +2 years of blockchain

    $250 - $750
    $250 - $750
    0 заявок(-ки)
    Block Chain Developer - 4+ years 6 дней(-я) left
    ПОДТВЕРЖДЕН

    We, are offering innovative and effective artificial intelligence solutions to helps our client’s business be agile & smart. Emerging as a leading artificial intelligence solution providers, we deliver cost effective services for natural language processing, text-to-speech, machine learning, knowledge virtualization, and more. Our team uses the best AI technologies and deliver AI power...

    $14 / hr (Avg Bid)
    $14 / hr Ср. заявка
    3 заявок(-ки)
    Looking for a blockchain developer - 1 year experience 6 дней(-я) left
    ПОДТВЕРЖДЕН

    Job Description We are looking for a blockchain developer who will be responsible for designing, implementing, and supporting a distributed blockchain-based network. Your primary responsibility will be analyzing requirements, designing blockchain technology around a certain business model, and the building and launching of a blockchain network. You will be asked to work on various blockchain t...

    $13 / hr (Avg Bid)
    $13 / hr Ср. заявка
    1 заявок(-ки)
    Help with Setting a blockchain node in AWS 6 дней(-я) left
    ПОДТВЕРЖДЕН

    Help with Setting a blockchain node in AWS

    $290 (Avg Bid)
    $290 Ср. заявка
    4 заявок(-ки)
    GraphQL expert needed 6 дней(-я) left
    ПОДТВЕРЖДЕН

    Hi, I need a GraphQL expert to help me out with minimum 10 queries. All data exist, in a blockchain [войдите, чтобы посмотреть URL] website, need to fetch the correct data with different variables and parameters.

    $137 (Avg Bid)
    $137 Ср. заявка
    5 заявок(-ки)
    looking for someone who can develop bep20 token 6 дней(-я) left
    ПОДТВЕРЖДЕН

    Hello, So i am looking for someone who can develop a currency depending on following parameters 1% liquidity, 4% holders, 4% burn, 1% charity

    $50 (Avg Bid)
    $50 Ср. заявка
    1 заявок(-ки)
    $13 Ср. заявка
    7 заявок(-ки)
    Binance Smart Chain Developers needed 6 дней(-я) left
    ПОДТВЕРЖДЕН

    ONLY FREELANCERS CAN BID. NO AGENCIES AND NO PROJECT MANAGERS. I want a BSC smart contract where one BEP20 Token is swaped to another BEP20 Token at current price. Price for both BEP20 Token will be provided by me. Please bid only if you know what to do. Please don't waste my time and yours.

    $19 (Avg Bid)
    $19 Ср. заявка
    2 заявок(-ки)
    Create ERC 1155 / ERC 20Token 6 дней(-я) left
    ПОДТВЕРЖДЕН

    Need to create a Token for a Upcoming Revolution in Real estate industry

    $2824 (Avg Bid)
    $2824 Ср. заявка
    6 заявок(-ки)
    electronic health record 6 дней(-я) left

    hello we are small company we need electronic health record website

    $1112 (Avg Bid)
    $1112 Ср. заявка
    44 заявок(-ки)

    I want to create a platform on top of the steem blockchain that can facilitate creation of smart contracts / smart media tokens . i want to create a solution-based platform where users can create smart contracts, these contracts can be anything, btc pegged tokens, smart media tokens which are stakeable, and NFT'S . using our platform's API users shall also be able to create their own ...

    $1216 (Avg Bid)
    $1216 Ср. заявка
    9 заявок(-ки)
    Blockchain_IIOT project Modification 6 дней(-я) left
    ПОДТВЕРЖДЕН

    Want a certain research paper on Blockchain IIOT modified.

    $15 (Avg Bid)
    $15 Ср. заявка
    4 заявок(-ки)

    Create BEP-20 Token and Edit a ready template website for the token

    $155 (Avg Bid)
    $155 Ср. заявка
    4 заявок(-ки)

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    Избранный Соглашение о неразглашении

    We need an outside perspective of a specific existing blockchain: What is good, what is bad, how good is the overall competitive strength? How unique is it? Background: We are thinking about building project on top of this specific blockchain. However, before we invest ressources we like to get a second opinion on the quality of the software. The result should be a detailed "audit paper&quo...

    $100 (Avg Bid)
    $100 Ср. заявка
    14 заявок(-ки)
    Tron Smart Contract Fix 6 дней(-я) left

    I am building a Tron smart contract , my current developer is inefficient and did 80% job done. Would like to have an experienced Tron developer to fix issues. 1) Smart Contract Correction 2) Front end redesign 3) Functionality Check

    $213 (Avg Bid)
    $213 Ср. заявка
    3 заявок(-ки)
    Smart Contract creation using Solidity 6 дней(-я) left
    ПОДТВЕРЖДЕН

    I need to create smart contract using solidity. More than 5 years of experience, will be selected. Type five on the top of your proposal.

    $485 (Avg Bid)
    $485 Ср. заявка
    14 заявок(-ки)

    Im an investor in a defi platform called NRGY. Their coin NRGY is an erc-20 coin on eth blockchain. If you want info on it their website is [войдите, чтобы посмотреть URL] Im wanting a dapp developed that is very similar to wink.org. Https://[войдите, чтобы посмотреть URL] Even though that dapp is on the tron blockchain. Players on [войдите, чтобы посмотреть URL] use [войдите, чтобы посм...

    $2861 (Avg Bid)
    $2861 Ср. заявка
    18 заявок(-ки)
    CRYPTO WALLET APPS 6 дней(-я) left

    I need a blockchain developer for my project. I need apps something like [войдите, чтобы посмотреть URL] with swap and staking feature. Can integrate my own bep20 token. i need something like [войдите, чтобы посмотреть URL] or [войдите, чтобы посмотреть URL] wallet. i need a real blockchain developer so they can give me the latest feature in crypto

    $7361 (Avg Bid)
    $7361 Ср. заявка
    14 заявок(-ки)
    Develop a cryptocurrency 6 дней(-я) left

    Hello i would like someone to make and develop my own crypto coin

    $1900 (Avg Bid)
    $1900 Ср. заявка
    14 заявок(-ки)
    Trading website and app -- 2 6 дней(-я) left

    Hello. I will like to know the strategy you using for the bot. Can you tell me how profitable is in term of percentage in daily basis?

    $2625 (Avg Bid)
    $2625 Ср. заявка
    2 заявок(-ки)
    Solidity/Smart Contract Developer on Ethereum/Binance chain 6 дней(-я) left
    ПОДТВЕРЖДЕН

    Looking for expert solidity and defi/dapps developer or blockchain developer who can create tokens and contracts and also defi apps on blockchain Must show your old work too

    $13 / hr (Avg Bid)
    $13 / hr Ср. заявка
    5 заявок(-ки)

    I need someone with good background in smart contract programming, especially ERC20 token programming. I have created a token I need somebody to assist me to finish it. Please in your bids mention your experience in terms of smart contract programming. Thank you

    $112 (Avg Bid)
    $112 Ср. заявка
    4 заявок(-ки)
    Caladex (DEX part of www.calahex.com) 5 дней(-я) left
    ПОДТВЕРЖДЕН

    We suggest anyone interested in this project to completely review what is required before even making a bid. The CEX part of Calahex is already in development but we are searching for a developer to give functionality to our UI/UX designs for the DEX part. 1. Attached you will find the samples of our UI/UX designs (not all are required but most of them are). 2. A simple basic DEX is required with ...

    $8690 (Avg Bid)
    $8690 Ср. заявка
    7 заявок(-ки)
    Sistema de gestión de Criptos 5 дней(-я) left
    ПОДТВЕРЖДЕН

    Se utilizará la plataforma BITVAVO: [войдите, чтобы посмотреть URL] A través de su API: [войдите, чтобы посмотреть URL] La API tiene una serie de limitaciones que no creo que lleguemos a superar, 1000 peticiones por IP o por API key por minuto y 100 peticiones de pedido (compra o venta) por segundo y un total de 100.000 por día. Donde si vamos a tener un pequeño ...

    $1448 (Avg Bid)
    $1448 Ср. заявка
    16 заявок(-ки)
    ETH Specialist 5 дней(-я) left

    Hello dear freelancer Im planning to focus on cryptocurrencies and someone who already expert in eth and can somehow provide me , if you're interested please contact me.

    $1100 (Avg Bid)
    $1100 Ср. заявка
    33 заявок(-ки)
    Whitepaper writing blockchain 5 дней(-я) left
    ПОДТВЕРЖДЕН

    Hi, I need someone that has already written some whitepaper for the crypto and blockchain. We are looking for a scriptwriter that will write one whitepaper based on the different documents and explanation we will share. We need a scriptwriter that has some passed work already.

    $369 (Avg Bid)
    $369 Ср. заявка
    24 заявок(-ки)
    White paper Blockchain Content writing 5 дней(-я) left
    ПОДТВЕРЖДЕН

    Hi, I need someone that has already written some whitepaper for the crypto and blockchain. We are looking for a scriptwriter that will write one whitepaper based on the different documents and explanation we will share. We need a scriptwriter that has some passed work already.

    $109 (Avg Bid)
    $109 Ср. заявка
    14 заявок(-ки)

    Energy trading system for buyers and sellers

    $553 (Avg Bid)
    $553 Ср. заявка
    13 заявок(-ки)

    Топ-статьи сообщества Blockchain