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.

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    37 搜到的工作,价格货币为 HKD

    I need a tool for CLC smart contracts or open source blockchain technology DLTs I want to register the hash on public blockchain and track shipments and keys. I want to use blockchain technology to share and validate personal documents and signatures of digital content validation. I need to ensure that it is recorded on the blockchain so that it is public and no one can change or dispute it. A...

    $3101 (Avg Bid)
    $3101 平均报价
    1 个竞标

    Send me a dm of some previous apps you have developed on the blockchain and if you are a real dev and not a scammer, I will respond with my software requirement document..

    $75252 (Avg Bid)
    $75252 平均报价
    20 个竞标

    We are building a ICON-Network based DApp platform and looking for a developer with previous experience of building a DApp Game - Texas Holdem. It would be better if you already have built the same game before and already have the resources. Knowledge/Expertise in ICON network is preferred but not mandatory as long as you are able to deliver a fully functioning Texas Holdem. I will be guiding yo...

    $5698 (Avg Bid)
    $5698 平均报价
    6 个竞标

    Note: Out budget is upto 15 USD per hour We have smart contracts deployed in Ethereum's testing network as Ropsten. Using the smart contract a user will be able to create her account. Also an ENS domain will be created created for the user e.g. [登录来查看链接] against her address. Requirement is to create rest api accepting Ethereum address and domain name, so that users account will be created b...

    $140 / hr (Avg Bid)
    $140 / hr 平均报价
    13 个竞标

    We are crypto currency trading firm and we are looking to develop a crytpo arbitrage and market making software for our current business. - we are looking for developers experience in developing /coding and coding also catering to clients in crypto currency field. - this is an on going project and we will be needing support after completion of project.

    $279 / hr (Avg Bid)
    $279 / hr 平均报价
    13 个竞标

    I want a web script where I upload the private key txt file of bitcoin and the result will be shown that key bitcoin address, compares address with balance. For more information check the attached private key txt file format and script format

    $194 (Avg Bid)
    $194 平均报价
    2 个竞标

    this project is to fork monero and design our own blockchain + web wallet + explorer

    $5969 (Avg Bid)
    $5969 平均报价
    12 个竞标
    Build a Crypto Exchange 5 天 left
    已验证

    I need a crypto exchange to buy and sale crypto

    $121324 (Avg Bid)
    $121324 平均报价
    54 个竞标
    Bug fix react native app -- 2 5 天 left
    已验证

    Must be expert in ecommerce , designed and crypto currency exchange . Bugs in posting product, and crypto exchange

    $4140 (Avg Bid)
    $4140 平均报价
    23 个竞标

    Developing one supply chain finance platform, and provide finance service to supplier, need use block chain, for example, corda, hyperledger, BCOS or Tencent blockchain.

    $41312 (Avg Bid)
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    16 个竞标

    I need you to develop some software for me. I would like this software to be developed using Javascript.

    $1016 (Avg Bid)
    $1016 平均报价
    1 个竞标

    I need an Android app. I would like it designed and built. It will be an earning app for people for every user the joining fees will be 200 and for every next referral he will get 100. This is the most simple description if you are interested I will explain you further.

    $690 (Avg Bid)
    $690 平均报价
    2 个竞标

    [登录来查看链接] code :[登录来查看链接] [登录来查看链接] logo [登录来查看链接] 32and64bit wallet,ubuntu 16.04and18.08 server wallet , mac OSX wallet [登录来查看链接] and IOS wallet [登录来查看链接] UI explorer [登录来查看链接] 7:Address initial: X 8:Total amount: 84000000 9:Pre excavation: 5000000 10:POW stage: 2 ~ 259200 / blocks value = 100 coins, 259201~518400 / blocks value= 50 coins, 11:POS stage: 518401 ~ 1036800 / blocks vault = 25 coins...

    $17117 (Avg Bid)
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    6 个竞标

    hi looking for someone who is familiar bcoin and [登录来查看链接] we want to develop something similar to it you must be familiar with bcoin repo and you must familiar with blockchain

    $4969 (Avg Bid)
    保密协议
    $4969 平均报价
    8 个竞标

    Need a blockchain developer/consultant to add blockchain technology to our Workforce Management App.

    $341 / hr (Avg Bid)
    $341 / hr 平均报价
    19 个竞标

    I need to consume this product's API The Web Content Authenticity Test solution makes a complete copy of the content being viewed in your browser and generates a proven report on its existence. It is possible to register an authenticity of content published on the web, whether on websites, blogs, social media or portals. In addition, from the report generated by the plug-in, a hash is create...

    $155 (Avg Bid)
    $155 平均报价
    2 个竞标

    We need a developer who can create api ipn system for blockcypher to accept bitcoin and ethereum on our [登录来查看链接] is to generate address for btc and eth and fetching payment with [登录来查看链接] should be in php

    $698 (Avg Bid)
    $698 平均报价
    3 个竞标

    I need an API to transfer Eth from one Main wallet to many different wallets and also to transfer Token balances from many wallets to one Main wallet.

    $4845 (Avg Bid)
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    10 个竞标

    Upload data from php laravel and storing it to Hyperledger Fabric blockchain. Display blockchain history in PHP web.

    $1233 (Avg Bid)
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    7 个竞标

    Build a blockchain app to share Training certificate information on Blockchain (Ethereum or Algorand). Functionalities: - Issue certificate on blockchain - Verifiy Cerificate Development: - Token development - UI Web development - Testing

    $4768 (Avg Bid)
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    19 个竞标
    Blockchain Explorer 4 天 left
    已验证

    Hello, we are searching for a skilled developer in order to work on our Blockchain Explorer.

    $1636 (Avg Bid)
    $1636 平均报价
    13 个竞标

    I need someone who is experienced with bitcoin trading (preferably from the UK) to guide me and help me trade BITCOIN.

    $21443 (Avg Bid)
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    7 个竞标
    I need an investment app 3 天 left
    已验证

    I need an Android app. where users can make deposits and earn daily rewards or interest to their account based on their deposits

    $3698 (Avg Bid)
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    19 个竞标

    Hello. There is a hotel management app. I want to integrate Bitcoin payments into this app. Check the following URL. If you are proficient in blockchain technology and can realize Bitcoin payments, we will pay. More information will be shared through charting. [登录来查看链接]

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    19 个竞标

    Hi, I am Michalis Agapiou, CEO of Syndeseas Integrated Solutions Ltd a Cyprus based startup. We have a diverse team of Naval Architects and IT experts managing our own integrated software for ships fuel & emissions monitoring, reporting and verification regulatory compliance and performance optimization. We are looking to upgrade our software by utilizing blockchain and we are searching for re...

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    27 个竞标
    Blockchain/gps/banking 3 天 left
    已验证

    I am looking for an app developer to create an app which combines data from satellite and geo-tagging. With a user interface built on blockchain. Each user will have a profile on which they can bank geotags.

    $13070 (Avg Bid)
    保密协议
    $13070 平均报价
    21 个竞标

    I am looking for someone to help me with setting up a GraphQL server on a VPS i have which is currently running a rest api server for a chain. I have forked this project [登录来查看链接] and because I am modifying it to run on a different chain, we need to create graphql backend for it to query. - Fork & Install the bitsong explorer with all npm modules it requires. - Fork & install the graph...

    $519 (Avg Bid)
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    5 个竞标

    I need online lessons from who is master of Bitcoin coding guru . - Creating wallet and securing them - Bitcoin mainnet transactions tracking - wallets balance tracking ( unspent BTC ) - secp256k1 - private keys - multiple signature - advanced security - NodeJS uses - Like that other details

    $1923 (Avg Bid)
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    6 个竞标

    1. We are in urgent need of Blockchain Ethereum Developers specializing in Golang with a minimum of 5 years experience. 2. Candidates should extensive knowledge of concepts pertaining to the same. 3. Hiring is for a long term project. 4. Apply only if your have the desired experience in the mentioned technology. 5. Candidates need to share their work portfolio in Blockchain-Ethereum to take this f...

    $17970 (Avg Bid)
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    11 个竞标

    I’m looking for a proof of concept website where people can buy PDFs via bitcoin. 1. They can enter their details such as name, email, etc. 2. We show them a QR code with the bitcoin address. 3. When payment has been validated, we send them an email with the PDF. Design isn’t important. This is just a proof of concept.

    $853 (Avg Bid)
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    3 个竞标

    I'm looking for a developer who have experience working with IPFS/Skynet or BTFS. My goal is to customize a decentralized video streaming website based off of [登录来查看链接] (which is built with Meteor and available on [登录来查看链接]), and customize it to load videos from my own servers. Currently, [登录来查看链接] loads videos from [登录来查看链接] API. I'm open to other strategies for retrieving videos. ...

    $426 / hr (Avg Bid)
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    16 个竞标
    Ride sharing app 1 天 left
    已验证

    Looking for a dev who can developed a ride developed a ride sharing app with basic functions like Distance calculation between driver and passenger using google API Price estimation Accept & cancel rides Wallet balance

    $11458 (Avg Bid)
    $11458 平均报价
    68 个竞标
    Need Blockchain developer 1 天 left
    已验证

    *CANDIDATES FROM KARNATAKA OR TAMIL NADU PREFERRED Good experience in ethereum Knowledge in Golang, Apollo GraphQL

    $8458 (Avg Bid)
    $8458 平均报价
    12 个竞标
    Develop Cryptocurrency -- 2 1 天 left
    已验证

    This project is to develop a BTC fork cryptocurrency. Must have extensive experience with cryptocurrencies and blockchain development. Complete delivery in up to 6 days.

    $4450 (Avg Bid)
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    14 个竞标
    Online auction 22 小时 left

    its an online auction system based on blockchain. Its complete in that aspect ,what I want is to add some encyption algorthim to my existing code to make it more secure.

    $946 (Avg Bid)
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    4 个竞标
    Hyperledger Indy 13 小时 left
    已验证

    We require a team of 4 people to work on a blockchain project. The timeline for the project is 45 days. We would prefer full stack developers.

    $114239 (Avg Bid)
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    31 个竞标
    Add asicboost on yiimp stratum 7 小时 left
    已验证

    Hello, I own a pool for personal use and I would like to add asicboost on my stratum server. I know stratum source and if possible I prefer to have modified source code with explanation Also a good addition will be equihash algo. Regards Zagorxx

    $3132 (Avg Bid)
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    2 个竞标

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