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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    77 jobs found, pricing in USD

    To create a governance token[Tokenomics] with stake and farm, the farm will have two types, normal and premium and their automatic reward distribution, and referral reward function up to 21 levels.

    $2276 (Avg Bid)
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    5 bids
    build me an entire DEX -- 2 6 days left
    VERIFIED

    i want a dex to be built similar to pancakeswap/uniswap

    $834 (Avg Bid)
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    6 bids
    build me an entire DEX 6 days left
    VERIFIED

    i want a dex to be built similar to pancakeswap/uniswap

    $777 (Avg Bid)
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    5 bids
    Trading Pro 14 hours left

    I m looking for a pro trader who can help me in my journey in trading

    $442 (Avg Bid)
    Featured Urgent
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    17 bids

    I am looking for a decentraland c lone script. I have been scammed many times in the Facebook marketplace or Fiverr. I lost almost 2000 USD. I am looking for an honest seller who can show me the work first on live. I will provide the server and domain. If you can show me the work first on live, then message me.

    $1383 (Avg Bid)
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    9 bids

    I am looking for a decentraland c lone readymade script. I have been scammed many times in the Facebook marketplace or Fiverr. I lost almost 2000 USD. I am looking for an honest seller who can show me the work first on live. I will provide the server and domain. If you can show me the work first on live, then message me.

    $1235 (Avg Bid)
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    5 bids

    Hi there, We want to build up the NFT website. Also want to build a website reference site But we don't ask for games, just the same structure Need blockchain technology. Also, want to create a Block Chain shopping mall. In one year we will build 200 websites. It’s only changed the language and little designs. Could you tell me your budget range, how long it will take,and send some projects to me according to list below: 2. B2B, B2C block chain shoppingmall block chain flatform market place exchange flatform 9. NFT collection After that we can go to the next step about the details. Thanks

    $2600 (Avg Bid)
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    38 bids

    Setup , develop and deploy a Crypto Casino

    $3336 (Avg Bid)
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    94 bids

    Urgent work, please bid you can accomplish the task soon.

    $103 (Avg Bid)
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    20 bids

    implement a ethereum smart contracts based blockchain system we will need a simple front end and a backend to do smart contracts for an academic project, please start bid with "electronic health record"

    $114 (Avg Bid)
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    12 bids

    Need to build a crypto exchange platform with functionality like converting exchange rates, making payments via api calls, trade, lottery, cross chain transferring, creating nft's, farming, pools. Blockchain experience is a must. The site will start on the BSC and Avax chains. Examples: Please start your reply with the answer to (4 x 2) - 3 =

    $8595 (Avg Bid)
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    89 bids
    Crypto portfolio site 5 days left
    VERIFIED

    Needed is a website with a crypto tracker and portfolio, a modern and fresh design, to be able to build and track your own portfolio on the website, and add a subscription option. Example is Please start your reply with the answer to (4 x 2) - 3 =

    $181 (Avg Bid)
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    65 bids
    Lottery Smart Contract 5 days left
    VERIFIED

    Looking for a experienced developer to build lottery contract on ERC-20 Chainlink VRF code and infrastructure will be used and for this contract UI will be designed for our website. Budget is 600 USD

    $571 (Avg Bid)
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    108 bids

    Gathering data from collections, particularly all data needed for the chart analysis on the Figma -general collection of information -listing history -sales history -volume history -floor price history -holder distribution -mints and mint distribution I'll send Figma link to hired developer

    $30 - $250
    Sealed
    $30 - $250
    26 bids

    We need an app for selling an online course . The App needs to be for both iphone and android. The most important features should include: - Registration for getting details from customers - A unique design for the videos (course) - TOP security especially featuring preventing download and screen recording of the videos - Payment method through cryptos Thanks

    $1930 (Avg Bid)
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    95 bids

    I am building a DeFi project and it's almost completed. In order to complete quickly, I need to hire an excellent solidity and dapp developer who is professional in Solidity, Smart contract, Web3, React.js, DeFi, and so on. List your experience and skills with example links. This is big project for long-term relationship so I need to test simple task first then decide to hire for long-term. Test task will be paid too. Candidates without sample projects will be ignored.

    $338 (Avg Bid)
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    30 bids

    I need some UI & some backend code in JS to my blogging site. All frontend UI design graphic elements have been created. The backend code is done but isn't properly configured for the website. (So, I have the code but just need to add it to the website. Features Development List: - Comments on Blogs - Should display: How many comments, reply functionality, Liking Comments and username as the shortened wallet address. - Likes on Blogs Functionality: - Should display amount of likes on blog cards and inside blogs at the bottom after clicking. (1 Like per user) - Sharing Feature: - Sharing link. ( This website uses IPFS & NFT's to get blogs content so sharing is hard because not everyone has IPFS configured. Need a better w...

    $25 (Avg Bid)
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    27 bids

    Gathering data from collections, particularly all data needed for the chart analysis on the Figma -general collection of information -listing history -sales history -volume history -floor price history -holder distribution -mints and mint distribution I'll send Figma link to hired developer

    $174 (Avg Bid)
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    39 bids

    Criação de Token (14.000.000) de unidades rodando em Servidor Blockchain na rede Ethereum. O Token sera vinculado a capital social de uma empresa e informará Latitude e Longitude referencia de localizaçao de imovel. Smartcontratct regulara vinculo com empresa e localidades. Precisará estar em Wallet propria e pronta para venda online + futura colocação em Coibase e Binance.

    $610 (Avg Bid)
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    61 bids

    Looking for someone with good experience with - Creating API documentation - Postman - Creating flow diagrams Also, we want the person should understanding crypto projects and smart contracts. Please mention some of your past work related to this project in the bid. Please share documentations you wrote in the past. I want to see how detail do you write documentation. The work is only about writing documentation.

    $1135 (Avg Bid)
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    29 bids

    build a simple app to search for NFTs from OpenSea API. Following are the steps to follow: - Connect to a Web3 Wallet, using - Display your wallet's balance for two currencies namely, ETH and USDC - Build a Search component, which uses OpenSeaAPI in order to fetch data - Have interactive filters such as Cost, Date etc. to filter data - Lastly make the layout mobile responsive and performant. Note: This task has a 50% weightage towards Engineering and 50% weightage towards Design Aesthetics. Original Designs will be preferred, compared to out of the box UI library components. Tech Stack: Use React.Js or , alongside Material UI for components. Please submit your project on Github, with the app being hosted on Netlify, Vercel or any hosting provider of your choice. Revert back if ...

    $47 / hr (Avg Bid)
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    Mobile App with crypto wallets of the major coins, database of users and a few simple algorithms presenting the functionality of the app

    $750 - $1500
    Sealed NDA
    $750 - $1500
    61 bids

    I am looking for NFT developer to work on a project.

    $812 (Avg Bid)
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    40 bids
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    Im looking for someone that wants to get paid lightly and then get paid on going in my dao system Ill send you the system and how it works, just need you to build it and make it work around our coin, it will be burning our token and creating a stable token system all at once. If you are ready to partner and take small upfront money let me know thanks. Im willing to pay like 250- 500 up front, if you understand say, :"Im ready for partnership" we have famous people ready to back this dao and make us good money.

    $250 - $750
    Sealed
    $250 - $750
    39 bids

    the ipfs infura uplod function is dubrected and i need update it with new endpoint, check this link also see teh file at attached

    $11 / hr (Avg Bid)
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    Unity Based Metaverse 4 days left
    VERIFIED

    Looking for an expert designer / developer to create a large Unity based metaverse

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    53 bids

    hello i am looking for an expert who can help me designing a crypto Tokeomics for a new project

    $60 (Avg Bid)
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    14 bids
    Develop wallet 4 days left
    VERIFIED

    Develop an eWallet. DeFi and cryptocurrency experience Contact me for more info

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    EXPLANATION SCHEMA PAYMENT APPLICATION FOR TERMINAL PAYMENT 1. The customer makes a purchase, opens his payment application and scans his QR code on the payment terminal of the merchant who has previously entered the amount of the purchase to be paid. 2. The amount of the transaction is displayed on the customer's screen and can click on "validate". 3. When the transaction is validated by the customer, the amount of the purchase is transferred immediately from the customer wallet to the merchant wallet, a confirmation that the amount of the transaction is available is sent through a green pop-up on the customer application and on the merchant's terminal validating the compliance of the transaction. 4. The amount is then converted into FIAT currency and transferred to th...

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    Looking for motivated self starter who have basic knowledge of cryprocurrency to join one of our upcoming big NFT project Job has 3 fixed milestone payments, core tasks: - join the team, can be active in TG - Help comment and feedback website & whitepaper - Take part in AMAs - Be ready for KYC - Bonus pmt at launch depending on success Anybody interested, kindly reach out with your picture and name, looking forward to hearing from you

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    URGENT - Simple NFT Create function fix i hvae project yasterday worked normal but today dont work and i think the proplem because the page source code at attached

    $9 / hr (Avg Bid)
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    Hello I need a smart contract programmer for tokens to do a special course to teach me all the details and how to develop contracts Our maximum budget is $500, please pay attention

    $366 (Avg Bid)
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    24 bids

    URGENT - Simple NFT Create function fix i hvae project yasterday worked normal but today dont work and i think the proplem because the page source code at attached

    $44 (Avg Bid)
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    14 bids

    We require a person who can integrate UI with NFT and contracts for: • Landing page with email and wallet collection etc • Option to buy the token with crypto, fiat and upi also. We have to design a model accordingly. • UI and page for NFT buyers should be able to buy music. • Revenue minting dashboard • Streaming revenue UI pages Draw Figma UI will be provided for 70% pages

    $10 / hr (Avg Bid)
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    15 bids

    Our team needs to develop a Crypto wallet (Bitcoin) similar to Exodus but with an enhanced wallet recovery capability, with layered searches for a limited number of recovery words. The base application would need similar core functionality as standard bitcoin wallets (e.g., receiving and sending Bitcoin, a wallet recovery process, preferably allowing for multiple simultaneous wallets). The wallet recovery process would need the standard base functionality as well (e.g., similar to Exodus' recovery process, allowing for entry of 12 security words, checking they are bip39, and if they are, proceed to sync with the Blockchain). However, the innovative function needed is to allow for iterative recovery attempts cycling through combinations of recovery words, with multiple word entries, fo...

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    hello everyone i am looking for software architect writer who can help me doing a document for my system so the developers can follow its in blockchain

    $10 - $30
    Featured Sealed NDA
    $10 - $30
    3 bids

    Hi, everyone. I have several problems relating NFT smart contract. I need to write NFTs smart contracts on the Binance Smart chain, and also for these NFTs, I need APIs to implement in our project for selling the NFTs directly from my website. Also, I need to implement the APIs for the wallets so users can connect their wallets and buy the NFTs from our website. Please reply with a proper solution & only an experienced developer.

    $14 / hr (Avg Bid)
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    Blockchain based in cosmos 3 days left
    VERIFIED

    Create the blockchain Upload in a server Create a cryptocurrency Create the documentation

    $280 (Avg Bid)
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    37 bids
    Build me a code 3 days left

    Build a code for me to use to do flashloans with out to much hassle just copy and paste it abd choose how many units i want to buy abd the name of them then thats about it and use it thru remix can u help me? I want a great sucess rate from this too or else for it not to work .

    $150 (Avg Bid)
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    10 bids
    Metaverse Development -- 3 2 days left
    VERIFIED

    I'm looking for metaverse development Below 4,5 Functionality we are looking for Dynamic Environment Avatar Movement Chat - Voice Chat, Text Video Playing Area, User Footprints - Analytics

    $1704 (Avg Bid)
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    12 bids
    Metaverse Project Development 2 days left
    VERIFIED

    I'm looking for metaverse development Below 4,5 Functionality we are looking for Dynamic Environment Avatar Movement Chat - Voice Chat, Text Video Playing Area, User Footprints - Analytics

    $3716 (Avg Bid)
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    8 bids
    Solidity Smart Contract Fix 2 days left
    VERIFIED

    This is a Solidity Smart contract fix project. If you are in the middle of another project please ignore this This is a two hour job at the max, I know because I am a developer myself This is the audit report. Critical error has already been fixed. These are the points need to be fixed. All are minor logic issues probably one or two lines fixes. BLC MAL MTS L01 L02 L07 L09 L13 those issues I need to be fixed Contract -

    $22 / hr (Avg Bid)
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    Hello, my name is Shubham. I want a small project using Hyperledger fabric. Basically I want a project that can demonstrate a permissioned network or blockchain. And Hyperledger fabric is known for permissioned blockchain. 1. Please suggest me a topic that solves a problem using Hyperledger fabric in university environment. Like you can build a course or online assignment sharing network etc. 2. I want latency and throughput tests done on the Hyperledger fabric network. 3. Basically I want it for my research purpose so I want to test the permissioned blockchain and screenshots of all the testing done. 4. It should solve a real life problem. 5. I just need a working prototype not a industrial level software 6. I want more of technical literature and analysis

    $1216 (Avg Bid)
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    ICO/IEO Landing Page 2 days left
    VERIFIED

    We need a landing page to launch a fund raising via ICO/IEO. Initially we are interested in a landing page where: • Provide details of the DAO and ERC20 token • Links for the website and Whitepaper etc • Social media support • Progress counter and statistics • Users can deposit ETH in exchange for our token • Connect to Metamask or other wallets for the ETH transfer • Record details for token distributions • Record contact details of subscribers • This landing page should be simple and clean, without bright graphics • Not interested in Wordpress templates • Preference for a node.js or similar solution • Preference for a solution that can also assist with graphics and branding • The ERC20 Smart Contract for the...

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    I need simple website to mint nft to phantom wallet.

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    I need cplex software for rent as its free for students and academics .

    $20 / hr (Avg Bid)
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    Solidity Contract fix 1 day left
    VERIFIED

    I have another project and bnb contract need some issues to be fixed after the audit my dev is travelling so it might be delayed I need to fix this sooner BLC MAL MTS L01 L02 L07 L09 L13 those issues I need to be fixed

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    Create an API to fetch order value of the Coin to place order on Kucoin FUTURES for MARKET ORDER. Current kucoin futures Api for market order doesn't have the parameter of order value of the coin. Below is the current API def create_market_order(self, symbol, side, lever, clientOid='', **kwargs): """ Place Market Order Functions :param symbol: interest symbol (Mandatory) :type: str :param side: place direction buy or sell (Mandatory) :type: str :param lever: Leverage of the order (Mandatory) :type: str :param clientOid: Unique order id created by users to identify their orders, e.g. UUID, Only allows numbers, characters, underline(_), and separator(-) (Mandatory) ...

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    I wanna you add the vesting: basically I need to give 50% Immediately the presale is released and 25% every 30 days, but leave those public variables so that the Owner can change the percentages, and the number of days freely after But once the pre-sale has started, these values ​​cannot be changed, only the Owner of the contract will be able to make settings before starting the pre-sale, this is for security for the Investors You should be able to provide the sourcecode without bugs. If you pass this test i could provide you my agency works: costum contracts,dapps evm chains, uniswap forks. Please tell me your price for: Uniswap forks wnd other samples so i can understand your pricing and timeframe. Sourcecode where add the vesting code:

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