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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    87 jobs found, pricing in USD

    I need a 7777 NFT collection (pixel art) 100-120 traits. Plus the full minting site (only one page) and contract on ethereum. I already have the domain and hosting. Message me for full details and discussion

    $601 (Avg Bid)
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    31 bids

    Hello, i need an artist for a web3 gaming NFT project . we're a new gaming company, playmint @ We need 3 base arts of 3 different characters and 6,000 variations each. Please link your past nft projects in the proposal so we can screen for a proven track record before contacting, Thanks.

    $14718 (Avg Bid)
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    6 bids

    Looking for blockchain based developers. Unmarshal API's are perfect solutions to the blockchain related data issues

    $9 - $16 / hr
    $9 - $16 / hr
    0 bids

    Hello, As title states, you will work ALONGSIDE with me to create an API to interact with blockchain. I will handle the interacting with blockchain and you will need to create the API interaction. Prefer NODEJS Please only bid if you are available to start working now. Need to finish this ASAP

    $173 (Avg Bid)
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    15 bids

    I already have a blockchain project now. but this have 3 bugs, so I need talented developer. This is made with react. So the developer need to know well in react, web3 integration. If you are interested, please bid with "web3 integration" on topline. After select the freelancer, I will share more details.

    $30 - $250
    Sealed
    $30 - $250
    20 bids

    Please use node.js to write a simple script to: 1. Generate infinite numbers of BTC address which is belong to one parent address by using Hierarchical Deterministic wallet Please conduct a transfer test in testnet of Bitcoin. Please also let me know that whether the transfer of bitcoin to any one of the BTC addresses will be consolidated to one BTC parent address.

    $185 (Avg Bid)
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    15 bids

    Secure IoT blockchain base Application Implement and test security architecture For IoT blockchain base using Edge& fog computing and defined software networks ( SDN ) These architectures are divided into the following: • Blockchain Cloud contains a holistic view of all managed IoT that have occurred to the cloud layer.. Blockchain technology enables to provide cryptographically validated transactions and data. and context-aware attributes-based CP-ABE encryption. It receives the user’s authentication & encrypt the data * IoT devices & IoT gateway * Application Analytics •Edge: composed of devices responsible for ensuring access control, secure data communication, and the application with security rules for managing local area networks. •Fog: compos...

    $255 (Avg Bid)
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    10 bids
    Trading expert 6 days left
    VERIFIED

    I am looking for an experienced blockchain and trading expert

    $498 (Avg Bid)
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    38 bids

    The pool already running and config as PROP Auto generator for all coins: Need to BTC Bitcoin Only Config and Set PPS+ or FPPS to at YIIMP POOL . Its not VPS Server. Team viewer remote for doing project require. If you have done it before please massage me and we talk about it. Requirement: ****Experience Done it before - Must be Expert in YIIMP mining pool.**** Please Don't Bid if you had no experience in YIIMP. ***Enable to start project in12hour. **** No milestone **** Full Payment after checking project. ****Max budget : 30$**** Higher BID & Auto bot BID will be removed. If you BID Don't ask for Higher BID in private, your Bid will be removed & and You will get Block by our company. ***

    $45 / hr (Avg Bid)
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    2 bids

    The pool already running and config as PROP Auto generator for all coins: Need to BTC Bitcoin Only Config and Set PPS+ or FPPS to at YIIMP POOL . Its not VPS Server. Team viewer remote for doing project require. If you have done it before please massage me and we talk about it. Requirement: ****Experience Done it before - Must be Expert in YIIMP mining pool.**** Please Don't Bid if you had no experience in YIIMP. ***Enable to start project in12hour. **** No milestone **** Full Payment after checking project. ****Max budget : 30$**** Higher BID & Auto bot BID will be removed. If you BID Don't ask for Higher BID in private, your Bid will be removed & and You will get Block by our company. ***

    $40 (Avg Bid)
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    4 bids

    We want to build a blockchain network on Hyperledger Fabric, a permissioned blockchain, so that it can be implemented for healthcare purposes. We want to build a network on the cloud preferably. And then evaluate its performance in terms of the scalability.

    $2662 (Avg Bid)
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    8 bids

    The pool already running and config as PROP Auto generator for all coins: Need to Add and Set Ethereum Coin PPS+ or FPPS to Existing YIIMP POOL . coind-geth & stratum & payments (FPPS or PPS+) need to configure Its not VPS Server. Team viewer remote for doing project require. If you have done it before please massage me and we talk about it. Requirement: ****Experience Done it before - Must be Expert in YIIMP mining pool.**** Please Don't Bid if you had no experience in YIIMP. ***Enable to start project in12hour. **** No milestone **** Full Payment after checking project. ****Max budget : 30$**** Higher BID & Auto bot BID will be removed. If you BID Don't ask for Higher BID in private, your Bid will be removed & and You will get Block by our company. *...

    $25 (Avg Bid)
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    1 bids

    We are looking for an experienced React developer to join our team, who is excited about our mission to bring Defi primitives to Millions of users. They will be responsible for helping the team in building the most secure, seamless, and high-performance protocol that offers our customers an easy-to-use application for lending and borrowing in the Kadena ecosystem. Responsibilities You will work directly with the core team, where your experience will help the team to build an innovative lending and borrowing platform dapp. You will work to implement new features end to end. Collaborate closely with the team around both the designs and the implementation of the designs. Sense checking with the team and prioritizing work from our backlog. Requirements ‚óŹ Proven background working as a React ...

    $33 / hr (Avg Bid)
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    28 bids

    I have an Ethereum EVM compatible type of Blockchain programmed with Proof of Authority (PoA) algorithm and which works very fine but since yesterday my chain suddenly stopped confirming transactions. I would like a blockchain expert to check it for me and fix the issue. Here is one the transaction I made that never got confirmed till now. Please bid only if you are truly blockchain expert otherwise don't waste my time and do not come to break down my service.

    $22 / hr (Avg Bid)
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    15 bids

    For our upcoming presale Marketing, we need an expert in presale and a good influencer

    $1244 (Avg Bid)
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    19 bids

    Need to build an API to interact with Hashgraph SDK for an NFT collection Please get familiar with Hashgraph SDK and Hashconnect. It is built on Hedera Hashgraph chain. Steps: Steps: 1. User Click button and it sends a transaction to my account of 10 HBAR using Hashgraph SDK/HTS 2. Backend api detects that it was successful and that it was 10 HBAR 3. My account ints nft[i] with CID[i] using hashgraph sdk then removes that CID[i] from the array 4. My account sends the NFT[i] to the user who sent the transaction through the use of Hashgraph SDK/ HTS

    $163 (Avg Bid)
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    17 bids
    Hashgraph SDK NFT API 5 days left
    VERIFIED

    Need to build an API to interact with Hashgraph SDK for an NFT collection Please get familiar with Hashgraph SDK and Hashconnect. It is built on Hedera Hashgraph chain.

    $135 (Avg Bid)
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    11 bids

    The pool already running and config as PROP Auto generator for all coins: Need to Add and Set Ethereum Coin to Existing YIIMP POOL - PPS+ or FPPS payment. coind-geth & stratum & payments (FPPS or PPS+) need to configure Its not VPS Server. Team viewer remote for doing project require. If you have done it before please massage me and we talk about it. Requirement: ****Experience Done it before - Must be Expert in YIIMP mining pool.**** Please Don't Bid if you had no experience in YIIMP. ***Enable to start project in12hour. **** No milestone **** Full Payment after checking project. ****Max budget : 20$**** Higher BID & Auto bot BID will be removed. If you BID Don't ask for Higher BID in private, your Bid will be removed & and You will get Block by our c...

    $15 (Avg Bid)
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    We're in the planning phase of a new Token which will be connected to hardware in the real world. In our project we have people with experience from Finance, Web development, Hardware development and Design. We are now looking for an expert on developing on the blockchain. Your work will consist of everything from designing the product together with the founding team to deploying a final smart contract. We are looking for someone with experience from real world cases, show us previous smart contracts you've developed and deployed. Looking forward to chat!

    $24638 (Avg Bid)
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    15 bids

    Two parts to this request. 1). I need a magic eden sniper bot, web based. Preferably on-chain with wallet connection. A uto Buy/Sell based on Floor price. Magic eden $SOL integration. Rarity based listing and how much for. Search Function Search by X trait. List of Rarities based on NFTs listed. Dynamic buy price based on the floor price. Ex: “50” will buy the listings listed for 50% below the floor price! Auto-sell snipes – you can instantly list for sale in multiple ways! Auto buy when Floorprice reaches X - EX: “0.10” will buy listings for 0.10 or below! Auto Sell when Floorprice reaches Y - EX: “0.10” will sell listings for 0.10” 2). Minting bot that supports Magic Eden + launchmynft. PLEASE NOTE WEB BASED NOT desktop applicati...

    $6105 (Avg Bid)
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    27 bids

    I need a working prototype of a private blockchain concept using the hyper ledger, solidity, or other relevant tools which I can demonstrate with real participants and collect some data to include in my dissertation.

    $748 (Avg Bid)
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    19 bids
    ICO token page setup 4 days left
    VERIFIED

    Hello, I have an ICO page and need help with connecting my token to the page. If you have experience please bid to help me. It takes few minutes of your time. This is urgent.

    $23 / hr (Avg Bid)
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    43 bids

    I wanna support of miners who can help me my crypto bot

    $465 (Avg Bid)
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    10 bids

    Like the title says : I need someone to build an Identity management system on blockchain

    $2947 (Avg Bid)
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    34 bids

    Hi we want to develop Android and IOS app using the Api of our crypto exchange we have ux ui designs ready

    $5497 (Avg Bid)
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    48 bids

    Project: NFT Lending Site Fork READ FIRST BEFORE BIDDING!!! Please read the entire project description. We will not entertain low bids that are used to kick off conversations and negotiations to increase the price in the project. Please bid on the entire project, and take into consideration your bid price that could focus on profitability for you while staying competitive against other bidders. Also, note that we will be using milestones, and expectations for this project. Bidding: Please bid the total cost of the project, and the timeframe. Also, please take your bid and add 10-15% to the project to allow for a buffer of odds and ends. Project Summary: We are looking to fork a specific crypto project. DM me, and I will share with you the exact project name, website, and smart cont...

    $1703 (Avg Bid)
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    70 bids
    Mint Smart Contract (ERC-721) 4 days left
    VERIFIED

    Hey I need to mint out a 777 supply no traits all the same NFT 777 tokens on the ETH blockchain

    $830 - $1170
    Sealed
    $830 - $1170
    88 bids

    Hi freelancers. I need an experienced Rust developer with strong working knowledge and excellent familiarity with blockchain technologies. I have some bugs in project developed by Rust. Budget TBD. Requirements: - Rust developer, ideally 2 years+ - Crypto experience: creation of smart contracts, wallet interactions, code audits. - Specific experience with Rust development for NEAR protocol.

    $170 (Avg Bid)
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    12 bids
    Lead blockchain engineer 4 days left
    VERIFIED

    Full stack engineer with experience in Rust programming needed for a long term projects. Should be able to work on independent projects and overseeing other development work. Represent the project as technical lead and communicate with other projects when needed. Extensive knowledge of blockchain needed.

    $54 / hr (Avg Bid)
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    13 bids

    AYRA ECOSYSTEM APP: AYRA BEP20 TOKEN: I need a withdrawal method for tokens earned by users. They must be able to withdraw Ayra token both in Metamask and in trust wallet as a minimum.

    $763 (Avg Bid)
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    37 bids

    We have the following token: We have a Metamask removal method implemented but it is failing. We need a valid withdrawal method for all bep20 dapp wallets. Or at least compatible with Metamask and Trust Wallet working 100% for this app:

    $44 (Avg Bid)
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    We are looking to hire a Lead Solidity Engineer who is self-motivated, goal-orientated, and a strong team player. The perfect candidate takes pride in their work and knows what it means to deliver high-quality products. This position will oversee both internal and external smart contract developers. Responsibilities: Lead development of all of the company’s smart contracts Manage and grow a team of smart contract developers Develop, test, and deploy new smart contracts using Solidity Work with product and design for continued enhancements Keep smart contracts in-sync with developed protocol(s) Monitor the ongoing health of our smart contracts and ensure their security Build and maintain core smart contract technologies ...

    $45 / hr (Avg Bid)
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    60 bids

    Bitcoin transaction generator app needed for educational purposes.

    $595 (Avg Bid)
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    26 bids

    The pool already running and config as PROP Auto generator now: FPPS or PPS+ auto generator payments method configure and setup Its not VPS Server. Team viewer remote for doing project req. If you have done it before please massage me and we talk about it. Requirement: ****Experience Done it before - Must be Expert in YIIMP mining pool.**** Please Don't Bid if you had no experience in YIIMP. ***Enable to start project in12hour. **** No milestone **** Full Payment after checking project. ****Max budget : 80$**** Higher BID & Auto bot BID will be removed. If you BID Don't ask for Higher BID in private, your Bid will be removed & and You will get Block by our company. ***

    $80 (Avg Bid)
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    7 bids

    Hi, I am looking for a Blockchain / solidity developer to Create a Bot to execute Flash loan operations. Looking for a long-term working relationship. Regards

    $718 (Avg Bid)
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    52 bids

    Being a part of UpRizeNow, you will be able to aligned to get niche skills technology projects at anytime. While our mobile application facilitates sometime extras that increase extra earning: • Avail IT projects faster and at your rates • Communicate more effectively with company • Share real-time information & timesheet for faster approval • Get Instant payments & ratings That being said, if I can provide more insight or support on how to leverage UpRizeNow to get into new way of work, I am happy to help. Do you mind taking 20 seconds time to download our app? Explore Mobile App Now: App Store: Play Store: Register through Web: I look forward to talking with you.

    $39 / hr (Avg Bid)
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    5 bids

    I want to mine eitherium with Google colab python script in free

    $14 / hr (Avg Bid)
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    12 bids
    NeoEden´s Realm 4 days left

    NeoEden´s Realms origins are inspired from a utopic fantasy world, brought to life with a modern twist involving tangible blockchain solutions, each NFT asset is carefully hand drawn and programed by our brilliant world wide team! Born from fantasy, brought to reality, Neo Edens Realm aims to be a standard for future communities by having impactful decisions driven by its members through NFT technology & DAO solutions, having the project a life of its own thanks to the members that compose and support it. Owners of each Neocard will be able to claim 5 lovely $Roses a day for a period of 5 years , bringing with it new era of “Rosenomics” to the Realm. These $ROSES will be used for various utilities, such as NFT breeding, onchain metadata changes or implemented DAO vot...

    $675 (Avg Bid)
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    20 bids

    Looking for a good NFT developer who holds good experience in NFT development especially from India

    $669 (Avg Bid)
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    19 bids
    Crypto Content Writer 4 days left
    VERIFIED

    I'm looking for a writer with a passion for crypto to write articles for a new blog project... This will be focusing on just one new area of blockchain only, a new protocol that could revolutionalize the industry. This is very much a testbed opportunity and time would be dedicated to researching and writing blog posts on just one up-and-coming protocol This would be an entry-level position that could turn into something long-term and pretty lucrative for the right candidate. Required is a high-level understanding of blockchain and the ability to explain technical complexities. PLEASE ONLY APPLY - If you have a good understanding of blockchain as this particular protocol is so new it will go over your head. On the other hand, if you have a passion for web3 and the future of block...

    $4 / hr (Avg Bid)
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    A Cryptocurrency technical advisor for my BEP20 Token - I need general assistance to learn how to build and implement : - Reflections - How token holders are issued these reward tokens 4% is Redistributed to all existing holders - Liquidity Pool Acquisition 3% is added to liquidity -Token Burn 2% of tokens are burned -Growth Fund 1% is added to the SafeMoon Ecosystem Growth Fund - You need to advise how my new BEP20 token will build and implement these requirements. No coding is required.. Just technical advise.

    $14 / hr (Avg Bid)
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    I want to make a lotto game and users can play with picture below is just a rough design, just to explain the principle of how to play. If you are interested in doing this project, please contact me.

    $3145 (Avg Bid)
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    28 bids
    Complete my NFT marketplace 3 days left
    VERIFIED

    I would like to finish developing my NFT marketplace which was left undone.

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    I need a smart contract expert to build a smart contract similar to another existing smart contract's decompiled bytecode. Let me know if you previously have worked woth decompiled bytecode.

    $225 (Avg Bid)
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    I am looking for a blockchain developer who can code smart contracts, web3 ability and is able to create valid APIs

    $169 (Avg Bid)
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    63 bids

    I am interested in developing a project( real estate ) tokenization platform and decentralized, send me a message if you have experience and can handle the smart contract.

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    Solutions to some significant challenges of payment transactions for electric batteries, charging points queuing, and charging process;

    $256 (Avg Bid)
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    The project is to build a simple betting website in which users can register with their MetaMask wallet and bet on available sports events. After an event outcome is decided by admin, users who predicted the result correctly get rewards proportional to their betting amount and the house gets 5% of the total sum. -Events are created by admin. Each event has two competing teams each with its own photo. There can be 4 possible outcomes for each event (win, loss, draw, cancelled). - Each user can have simple profile (avatar and bio and showing his betting history) - User also have settings options to be notified about their betting outcomes and newly published bets. - Each event has a deadline to bet, amounts betted on each result and the list of participants on each event. Each event also ...

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    We have a ERC-20 based token, which needs a pre-launch audit. Scope of work - code accuracy - proof of stake readiness - code fulfills development requirements -correction of errors -confirm launch readiness We assume 2-3days work the max. Please share previous experience

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    A configured and functional blockchain infrastructure based on Hyper-ledger or ethereum , demonstrates the traceability of transactions and the conversion of points into a kind of currency that can be used within the platform. VM , code sources , documents....etc will be provided . i need an expert that can do that quick. ( two developers failed on this project for lack of competency, if you don't know anything about Blockchain ,there's no reason to contact or to accept this job) . Reach out to me if you have the necessary skills and please stop asking me to increase the budget !

    $282 (Avg Bid)
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