Blockchain jobs

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. Hire Blockchain Developers


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    867 jobs found, pricing in PHP

    Hello there, I need to decentralized web wallet. Features: - Login and register - 2FA auth (at the request of the user) - Deposit / Withdrawal, ethereum and erc20 tokens. - Tokens and all ether control with smart contract. (management has to be mine) - Logout

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    Ethereum Blockchain Fork 6 days left

    We need to do a fork of Ethereum and change contract fee. I uploaded the specification now. Thanks

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    We are running an MPOS pool installed on Ubuntu 14.04 LTS with MySQL 5.5.60 and PHP 5.5.9 with Memcache installed and enabled. Our ideal functionality is to use Memcache to handle requests for user hashrates and user and round shares in order to keep the frontend fast and to relieve query load to our MySQL database. What's happening instead is requests for such information are tying up our My...

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    This project is for the development of: A Low Budget Crypto Currency with POW2 (like [login to view URL]) This is straight forward power to the people crypto, no ICO 2 Different type of support programs, these must be, user friendly, one click, KISS solutions: - Wallets: Windows, Mac, Linux, Android, IOS, Paper - Miners: Windows, Mac, Linux, Browser Website with stockprice, buy/sell between users,...

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    I'm looking for a blockchain development expert, who can develop a decentralised chatting network. Please quote your price, and time duration.

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    I need a blockchain developer-teacher to provide tools and guides, and teach my programmer "how to blockchain": How to change generation algorithms (POS/POW[X11/Lyra/Xevan]/POW+POS-HYBRID) with Genesis block creation (POW) Difficulty adjustments How to change network parameters such as: Block generation time, Block weight Coin emission and distribution between MN/MINER/BUDGET BlockCount...

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    Change Genesis Block 5 days left

    I'm looking for someone who can create a new genesis block.

    ₱525 - ₱1574
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    0 bids

    source code: [login to view URL] site: [login to view URL] I need this script changed to included exchange erc20 tokens with ethereum. Wallet will work exactly the same as my ether wallet script it will just have the function to add tokens (already has this function) and you can exchange with ethereum. this will work in the way as a normal decentralized exchange except all will be done at the sa...

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    Hello i need to hire people who knows blockchain developing and coin creation,is a long term project,so you don't have to ask me money now,you must proof me that you like the cause and are able to continue developing of the [login to view URL] coin on own blockchain ,pos,wallet,no mining,similar to [login to view URL] and see globalpeoplecoin dot ga,when will start the project you will earn [...

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    i need Bitshares Developer 5 days left

    i m looking for only Bitshares core Developer. don;'t apply if you are not expert in Bitshares core, otherwise i will Report your bid.

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    I need people for create topic in bitcointalk about our ICO. And manage topic. For 1 month. And will paid every month. I need level member in bitcointalk with legendary or senior. Not newby.

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    If you have the needed amount just let me know so we can discouse for more ! thanks

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    2 entries
    Project for Quan Y. 8 days left

    Hi Quan Y., I noticed your profile and would like to offer you my project. We can discuss any details over chat.

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    Do not bid if you have not delivered a crypto exchange before Payments will be done on milestone delivery , NO ADVANCE PAYMENT You need to show that demo exchange have been delivered by you. Only bid the amount you are prepared to accept Read specs before bidding. Thanks

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    Ideally I am looking for solution which is already delivered in production and tested in production Hence with small new changes as per my specs and new UI it can be deployed in production See the specs with more details Do not bid without reading the specs Do not bid lower price that you are not willing to take .

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    i need a c++ Programmer with Crypto exchange knowledge. who can take open source exchange core code from git-hub and modify that as i want. only expert level apply here..

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    i know some opensource blockchain, i want to install that with some cusotm development, i need c++ programmer with blockchain expert. apply only u are c++ and blockchain development expert. more detail will via chat..

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    I am looking for an experienced developer to create a new Cryptonight heavy coin that is ASIC resistant. I will also need a Windows wallet created to support the new coin. I don't actually mind if this is a fork on Sumokoin as that is a great project and will be a good base for the start on this new coin. I will also need this coin to be compatible with cryptonote-nodejs-pool. Which is th...

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    Project for Alok Kumar B. 4 days left

    Hi Alok Kumar B., I noticed your profile and would like to offer you my project. We can discuss any details over chat.

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    I need a solidity developer to develop a Ethereum smart contract. More details on how the contract works if interested.

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    Hello Freelancers, I am looking for blockchain experts on ethereum based projects. I don`t want to tell you too much here on the public Project post. But I am looking for someone who wants to change the world and want to be a part from scratch of a new company. I do prefer peoples from the Ukraine and Russia because I know there work ethic and their mentality. Pls make sure to answer me These Qu...

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    Cryptocurrency 3 days left

    We are searching a programmer/developer for a new criptocurrency, ICO creation from the beggining, the new currency: 25% will be used in mining/masternodes divided as follows: 5% mining 20% more *this % can change The developer will help us to choose the best algorithm to use and justifying its advice telling us theme as: security Fast transaction factibility total of coins possible fork diffic...

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    I need to get a Crypto Currency Exchange developed with Fiat deposits and withdrawals. Something like Coinbase and Gdax. With additional features in it.

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    Build a distributed access and validation system using the Blockchain to replace centralized intermediaries that would also user Smart Contracts to act as an intelligent representation that links patients and providers to the addresses of existing medical records.

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    Project for Alok Kumar B. 6 days left

    Hi Alok Kumar B., I noticed your profile and would like to offer you my project. We can discuss any details over chat.

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    Community Manager: Essentia 3 days left

    Duty: manage the Japanese local Ess community telegram, organize local meetup. Local exchange contact, biz dev strategy for the local market.

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    We have a project thats going to be launched for seed funding in 2 months time. This project involves the expertise of many development fields, one of them been blockchain development in particular NEO platform. We looking for a full time blockchain head developer to help us with our project. In order to complete the crowd funding stage of seeds funds we need to present a prototype which is bee...

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    Blockchain engineers 3 days left

    Blockchain engineer to support a token launch on Ethereum

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    create coin XYZ (not token ) based on ethereum (i will use this coin to deploy smart contracts as transaction fee) using PoS mechanism and support masternode. each blocksize maybe max about 5MB and every 1 Minute/block 'mining' pool/nodes apps , blockchain explorer, desktop wallet. [Removed by Admin]

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    we are looking for someone who can help finish the metamask integration on our backend so people can buy our ERC20 tokens and they go to their meta mask wallet that they either import or create from within our back end.

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    Hi Alokumar, I noticed your profile and would like to offer you my project. We can discuss any details over chat.

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    Develop extension! I need google extension same as MetaMask. Thanks

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    I want someone who can fork Ripple. develop wallet Web wallet mobile wallet iOS, Android

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    errors from [login to view URL] 2018-05-23 16:19:59 [login to view URL]() = 1001 2018-05-23 16:19:59 [login to view URL]() = 0 2018-05-23 16:19:59 [login to view URL]() = 4 2018-05-23 16:19:59 init message: Loading addresses... 2018-05-23 16:19:59 torcontrol thread start 2018-05-23 16:19:59 ERROR: Read: Failed to open file /root/.atec/[login to view URL] 2018-05-23 16:19:59 Invalid or missing [...

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    -LoveChain- 3 days left

    Virtual and blckchain version of the locker you can find on the "pont des arts" in Paris. Simple App where you can put your name and the name of your lover, and write it in the ethereum blockchain forever. After validation you will receive a certificate with the block number. I want to have an iOS version for this app and accept Apple Pay as payment system. That will implied to wait for ...

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    Web development 3 days left

    I need a new website. I need you to design and build it. We need Crypto Exchange website , look a like binance , polinex with facilities like margin trading and lending

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    I want a website with latest graphics which also have a member login, admin login, and super admin login. I want a cryptocurrency payment gateway and automatic withdrawal system to customers account.

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    Blockchain Developer urgent 2 days left

    I want to make a decentralize exchange using a open source blockchain after that i want to do many custom thing there, only experience guy bid here, i will request your past working experience in this filed.

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    (1) A Trading & Exchange Platform for Buy/Sell/Exchange of Crypto Currencies. To be developed on Larval platform. (2) 5 Coin integration to begin with- BTC, ETH, LTC, BCH and Ripple (3) E-Wallet- Crypto & Fiat (4) Fiat Deposit & Withdrawal integration. Means Exchange/Trade between Crypto to Crypto as well as Fiat to Crypto. Fiat- 1 Currency. (5) UI/UX of the site has to be very Modern...

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    The blockchain is a wonderful thing. It’s only been around for ten years, and it’s already taking the world economy and shaking it by the roots. As it turns out, the economy isn’t the only thing the blockchain is set to transform. Cryptocurrency networks are being utilized on a variety of different fronts to do everything from saving the planet to choosing the nation’s nex...

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    PLEASE READ BEFORE BIDDING (NO ETHEREUM BASED BLOCKCHAIN) I wait from a blockchain developer to integrate this feature to the bitcoin fork: - Set sending limit (Anyone can set a send limit for a specific address using the private key, for example i set to my address to be able to send only 0.3 BTC under 24 hours, i can remove this condition with my private key, or modify it) - More information...

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    Fix a Bitcoin Fork - 1 day left

    All the specs for the coin are done. We just need someone who knows how to add the DNS seeds and make the fork to start mining (and visible to other peers). Please good budgets!

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    We are currently building a crypto exchange and we require assistance to create user wallets for ERC20 supported wallets with all transactions being linked to the eth network. We also require assistance to send transactions after trade success.

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    Watcher of Crypto wallets 1 day left

    local tool which can verify balance and transactions on cryptowallets: BTC, BCH, LTC, ETH, DAS, XRP - must communicate via api - return balance + transactions - bulk requests - dont want to use 3rd party service - ready to use open-source solutions - example insight for btc etc... - need bash script which will autoinstall the needed libraries, dependencies, clone git, settings etc on fresh ubuntu ...

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    Blockchain App 1 day left

    need to design blockchain application.

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    We would like to get a complete service for our special ICO project, please text us for details.

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    Only the developers who already executed similar work successfully can contact me and work on this project. Must be finished within 1 day.

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    Project for Cryptocurrency 1 day left

    We need to build our own digital currency.

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    I am looking for a professional mobile developer/team to design and create a bitcoin mobile application wallet similar to [login to view URL] wallet. Github link ([login to view URL]) and iOS link ([login to view URL]). This is a long term position and I am looking for a very smart developer/team who can take an idea and turn it into a complete app with high quality and professionalism. I will be ...

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