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    29 jobs found, pricing in USD

    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.

    $20 / hr (Avg Bid)
    $20 / hr Avg Bid
    2 bids

    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!

    $28105 (Avg Bid)
    $28105 Avg Bid
    9 bids

    Client looking for coin listing website like as client reference - Listing of cryptos - Search engine with filters such as volume, kyc, market cap, percentage change. Access to the platform will be free with limited functionality. You have an example with which gives limited free access. Access to the platform must be possible for investors holding a certain number of tokens if they do not have tokens that have limited features and to use more features they need to buy a subscription. Below you will find the answers to your questions: 1. How many blockchains should you use? For example, see the image below. To start with, it is best to integrate the following blockchains: NBB Smart Chain, Ethereum, Cronos, Solana, Avalanche and Polygon. 2. What type of wallet integration is needed to do ...

    $250 - $750
    Sealed
    $250 - $750
    29 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.

    $676 (Avg Bid)
    $676 Avg Bid
    17 bids

    Need to get a smart contract done in Hedera Hashgraph for NFTs

    $127 (Avg Bid)
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    23 bids

    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)
    $45 / hr Avg Bid
    59 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

    $722 (Avg Bid)
    $722 Avg Bid
    49 bids
    Smart Contract using Rust 5 days left
    VERIFIED

    Hello, If you have any experience with Rust, please let me know. We need help with one task. It is a part of a large project. In addition, after finishing, we will be glad to continue the development of other modules. Orders (protocol example - ): - Create an order - Order cancellation - Order filling - Getting information about the current price for a pair Requirements to task: - The environment must be configured for testnet and mainnet (and other networks if necessary) - Documentation must be present - Tests should also be present - Code should be separated by contracts and interfaces If necessary, we will be glad to provide more detailed information.

    $30 - $250
    Sealed
    $30 - $250
    7 bids

    need a solidity based smart contract for minting an NFT collection on Hedera. already have metadata in ifps format.

    $189 (Avg Bid)
    $189 Avg Bid
    45 bids
    NeoEden´s Realm 5 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

    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)
    $14 / hr Avg Bid
    28 bids

    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.

    $231 (Avg Bid)
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    29 bids

    I am looking for a blockchain developer who can work full-time with me.

    $53 / hr (Avg Bid)
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    60 bids

    A fully custom token based on Binance Chain, subject to communication content.

    $142 (Avg Bid)
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    38 bids

    I want a blockchain expert who is very good at olympus dao platform. I need some smart contract changes and current frontend integration. Please apply if you are a good fit for this project. Thanks

    $1004 (Avg Bid)
    $1004 Avg Bid
    23 bids
    Long Term NFT Minting Project 3 days left
    VERIFIED

    Requires a specialist who is able to develop a token and a smart contract. We need a specialist for not just one project, we launch about 10 projects a month and we need a specialist for each of them, if we can work with you, we would be glad to have a long-term cooperation. Now we are ready to discuss this project and start working. Firstly this role will require paid test and it would be simple smart contract. Please see attachment file and bid with your creative answers. I will hire 2 candidates with right understanding. Please start your bid with "contract expert" Thanks.

    $25 - $50 / hr
    Sealed
    $25 - $50 / hr
    64 bids

    I'm looking for an experience developer for Blockchain projects. To build crypto Wallet, payment gateway, marketplace, and exchange. You have to have great experience in Blockchain technology and have previously developed similar projects. You will require to provide professional input and help with the functionality required.

    $1720 (Avg Bid)
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    64 bids

    DO NOT BID UNLESS YOU ARE A SOLIDITY DEVELOPER FROM IASI, ROMANIA OTHERWISE I WILL REPORT YOU. Salutare. Caut un developer in Solidity care poate face un token custom si care sa fie dispus sa ne intalnim fata in fata pentru a discuta detalii despre proiect.

    $511 (Avg Bid)
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    25 bids
    Smart Contract Code Reviews 3 days left
    VERIFIED

    Looking to bring someone to do quick smart contract code reviews and fill out a form with the results. Code reviews will take 30 minutes to an hour and we're looking at about 20 reviews a month.

    $440 (Avg Bid)
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    103 bids

    Develop BEP20 token smart contract with taxes and upgradable. Requirements> Share your portfolio in comment bscscan and similiar >In supply : 1b >Total tax: >>Development wallet: 4% >>Marketing wallet: 4% >>Reward wallet: 2% >>Trezor wallet: 2% Participate: >>send smart contract to test >>>1st payment >>after its deployed on mainet New tasks >>> develop dapp with other team members >>>>2nd payment - per hour or per project

    $158 (Avg Bid)
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    37 bids

    I need a smart contract deployed on remix that allows me to send coins to a personal address

    $451 (Avg Bid)
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    67 bids
    Smart Contract Code Audit 2 days left
    VERIFIED

    Looking to bring someone to do quick smart contract code audit and fill out a form with the results. Code audits should take 30 minutes to an hour and we're looking at doing about 20 audits a month. Must be familiar with Smart Contracts and the following attributes: Contract Ownership Airdrops and Backdoors Libraries and Forks Multi-Sig implementations Tokenomics

    $21 / hr (Avg Bid)
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    41 bids

    I am looking for a blockchain developer for my NFT project. It is start. In the future, I will make you busy.

    $1045 (Avg Bid)
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    38 bids

    Hi i want to make an crypto wallet exchange and a crypto coin so i need a good team or individual who can handle the work

    $2143 (Avg Bid)
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    21 bids

    Context: 1)I have 10,000 NFT Images already created 2)I have 10,000 Metadata files already created What i need: 1)I need someone to create a minting DApp for a website which is compatiable with opensea 2)The smart ethereum contract will need to split 25% and 75% of the intial sale price between two wallets and also split any future royalties between two wallets 50/50. You will need to help guide me through the launch process that you think will be good and must have worked on this type of project before and also happy to help with future development requirements. At the moment all i am after is bids so i can see how much it will cost, please confirm by saying "i understand".

    $629 (Avg Bid)
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    80 bids
    Building a Web3.0 Platform 1 day left
    VERIFIED

    Need solidity smart contracts written. Need a web3.0 connection to wallet connect, metamask and other wallets. Need website to allow escrow. Will say more after non-disclosure

    $2235 (Avg Bid)
    $2235 Avg Bid
    81 bids
    New NFT Game 10 hours left

    I am going to make a fantastic NFT Game Website on my own. Actually looking for a developer who has experience in building NFT Games before. Here is a NFT game "Dragonary". My brother likes this game very much, but it is desktop app and it has got a problem in its logic. I'd like to have a wonderful game. Please send me your proposals if you are interested in my project. Do not waste my time. I hope to talk with only who has understood my project and got my game's general logic. Please write down your opinion about this game on your proposal or simply append the url or video of your similar project. Will share more details via chat and will start working immediately.

    $2203 (Avg Bid)
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    30 bids

    Quero criar um marketplace tipo opensea, com loteria em solidity,

    $2630 (Avg Bid)
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    10 bids

    Buenas, queremos crear una sociedad en España, dedicada a la tokenización y fraccionamiento de propiedades, servicios vacacionales y equipamientos deportivos. Necesitamos crear y lanzar nuestro token en una ICO, como utility token para obtener la financiación inicial y posteriormente elaborar y comercializar NFTs que ayuden al desarrollo de cada uno de los proyectos. Nos gustaría poder contar con sus servicios, ya que necesitamos una estructura sólida y confiable, desarrollada por expertos en la formar un equipo de trabajo blockchain que trabaje junto con la dirección de sistemas. Quedamos atentos a cualquier comentario así como a establecer una reunión online en la aclarar los diferentes puntos. Saludos cordiales, English: H...

    $2846 (Avg Bid)
    NDA
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    72 bids