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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    853 jobs found, pricing in USD

    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...

    $104 / hr (Avg Bid)
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    Blockchain engineers 6 days left
    VERIFIED

    Blockchain engineer to support a token launch on Ethereum

    $40 / hr (Avg Bid)
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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 Freelancer.com 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- 6 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 6 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 5 days left
    VERIFIED

    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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    Don't bid if you don't know and have not experienced building crypto exchange. I hired one company here and then I have wasted over 120 days here. They were a scammer and they did not finish my project. no update over three weeks. and so I am finding new company and decentralized exchange with new method using 0x protocol. This exchange needs all functions and so if you quit or stop maki...

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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 - 5 days left
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    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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    Blockchain project assistance 5 days left
    VERIFIED

    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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    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 4 days left
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    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 4 days left
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    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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    I wrote a Medium article yesterday and want to advertise and market it so that it starts to gain traction. I'll provide you with the link to the Medium article, the link to my Reddit post, and the link to my twitter post for that same article. Please let me know how you can help promote this article of mine. Thank you!

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    Smart contract auditing 4 days left
    VERIFIED

    Looking for someone to audit my smart contract. Erc20 token Must have experince auditing smart contract before

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    Purpose: The purpose of Goldrium is to introduce a fastest PCI compliant coin which incorporates Ripple and Etherum main functionalities. Process payments, settle bank transaction, and people can create ICO on your platform. The coin should be self-reliant with its own algorithm and ecosystem. These are initial features but we will be constantly adding new features to compete with all coins includ...

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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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    I want a simple website with latest graphics with public site page, member login, admin login, superadmin login, this site should also accept cryptocurrency payments.

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    Looking for a Programmer for an indie Block-chain Venture. Prior experience is preferred in e-commerce along with crypto-currency programming .

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    github service about ico 3 days left
    VERIFIED

    I need service in github about my ICO

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    You will need to write a short report/proposal on improving the traditional supply chain with Blockchain technology. For example any ONE of these: 1. Blockchain in Pharmaceutical supply chain to prevent counterfeit drugs supply. 2. Blockchain based Port logistics 3. Food safety and traceability using Blockchain: Meat traceability, Sea food traceability etc. 4. Blockchain based garment products ...

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    We need a list with blockchain/crupto currency companies, who offers users coins/payments for simple services like, user-tracking, data-storing etc. The list must contain - Company Name - Web Url - Type of service - Coin Type - Company Status (ICO/Active) - Founded Date - Country Origin

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    i want design website like [login to view URL] intergration bitgo...usd 200. or negoticiateble price.

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    Live and offline courses by experienced tutors

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    We are working on Blockchain technology and want to add a highly motivated Engineer to our team in Kuala Lumpur, Bangkok and Singapore office. Work on emerging technologies, building POC’s leveraging internal infrastructure and data, partnering with Product on implementation strategy. Work with technology teams to understand the business demand and ensure design and build of solutions create...

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    I need someone to write whitepaper for my already created token. Whitepaper need to have 10-20 pages with graphs and text etc. Need finish in 1-2 days full.

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    Trophy icon Adult Webcam Mockup UI 3 days left

    READ THE ENTIRE DESCRIPTION! IF YOU SUBMIT RANDOM WORK, YOU WILL BE REPORTED! I need web designed UI of webpage Members Panel, Model Panel and Cam Viewing Page. Members Panel: This is the area for members once they are logged into the site. This page should have tabs to the left side and dashboard in the middle. Stationary Top: Members Name, Token Amount Tabs: Dashboard (Home), Wallet, Fav...

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    Guaranteed
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    We want our coins registered in crypto exchange for trade / exchange. Listing in Bittrex/Binance/BitHumb/HitBTC/Luno Only those who have experience in registering cryptocurrency in crypto exchange and received by crypto exchange. We only pay if it works. For more information please contact us!

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    complete development of fishing business to blockchain and getting the product to ICO stage , Existing model with source code of an finance project is there which need to be customised and get working for fishing business client at asia . All the datas and the flow would be shared by business analyst , implementation of existing finance model source code to fishing business for customised flow .

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    We are looking for article writers and bloggers to make overviews of our project. Its awesome if you know best IT blogs and column to post it free. You can choose the target audience and style of your articles (geeks/simple users/investors) Our project could be described from different sides (as any ICO project) [login to view URL] "Mira is an easy and convenient way to buy, store and sen...

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    Write a smart contract 2 days left
    VERIFIED

    A tenant wants to rent an apartment from a landlord. To maximize efficiency, I want to use a smart contract for this. The tenant would transfer the deposit to a third address (escrow account), and the landlord transfers a non-fungible token to this address. Then, on an agreed upon date, the token is transferred to the tenant and the deposit to the landlord. This token would act as a key, used to...

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    IM LOOKING FOR BLOCKCHAIN DEVELOPER FOR APPS AN WEB

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    We want to add our cryptocurrency on crypto exchange. Bittrex/Binance/BitHumb/HitBTC/Luno Only have registered cryptocurrency in crypto exchange and received. We only pay if it works. For more information, please contact us!

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    I am looking for someone with hyperledger experience. I need to create a blockchain based on hyperledger and I want it to be updated via web form. Web form will be very simple. Just name, age, country and submit button. But it will update the ledger and transactions can be seen from web interface. A blockchain that can be updated and query via web form. So on the website, there will be 1 form to s...

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    Database performance 2 days left
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    I need write an artical that describe to tune the performance of some area in database

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    ERC20 Smart Contract 2 days left
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    Develop an ERC20 token on Ethereum Create a wallet and test on ETH testnet This is new for me and I will need some guidance on best practices, so good communication skills are important.

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    Im looking for freelancer can create a new crypto currency with my idea! have anything about new coin and new function, I want to see your proposal before take a chat, please write it and give me your last coin are you created. Thank You

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    we want talented blockchain developer able to create on javascript based coins, or c/c++ coins XVG, ARK, LISK,ETH. who have done project like this before. need new own coin with web, create decentralized exchange wallet hosting desktop exchange and trading app for our coin. We finding team or freelancer not in company to join our time as a head developer. Who able to work in a partnership mode pl...

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