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    27 jobs found, pricing in USD

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

    $368 (Avg Bid)
    $368 Avg Bid
    24 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

    $1611 (Avg Bid)
    $1611 Avg Bid
    12 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".

    $603 (Avg Bid)
    $603 Avg Bid
    51 bids
    Building a Web3.0 Platform 6 days 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

    $2049 (Avg Bid)
    $2049 Avg Bid
    55 bids
    Trophy icon BSC 20 Payment 3 days left

    please go to - connect your metamask and check out the subscriptions that can be bought using the BSC20 Token $AET. There are 3 subscription levels, all three should be working and executable on Windows PC, Mac OS, iOs and Android always using Metamask plugin and/or Metamask App Browser (if mobile).

    $255 (Avg Bid)
    Guaranteed
    $255
    0 entries
    New NFT Game 5 days 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.

    $2016 (Avg Bid)
    $2016 Avg Bid
    19 bids
    Write SOLIDITY smart contract 5 days left
    VERIFIED

    We want to copy existing project from github. Need to change few things from that contract.

    $85 (Avg Bid)
    $85 Avg Bid
    12 bids
    Roulette Game(Solidity SC) 4 days left
    VERIFIED

    Hello, We need a roulette game with excellent graphics, in solidity, with smart contract. Mobile based or responsive. Best Regard's VG

    $2242 (Avg Bid)
    $2242 Avg Bid
    17 bids

    We require a smart contract developer for a BEP-20 with integrations to service modules from ChainLink. The project is expected to last for 3-4 weeks. Flat-rate payment, future employment opportunities available.

    $41 / hr (Avg Bid)
    $41 / hr Avg Bid
    26 bids

    We are looking to develop NFT/Cryptocurrency marketplace. Required skills are Solidity, React, Golang, Rust, Python.

    $51 / hr (Avg Bid)
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    17 bids

    There is a requirement for the rfollowing: #1 Create NFT + Gift Cards with Utility #2 Launch limited edition NFTs to drive Referrals through the provision of incentives Please provide the following info with your bid. - How you would implement the above - Timelines/milestones Further information can be provided as required

    $875 (Avg Bid)
    $875 Avg Bid
    36 bids

    solidity ^0.8.11 ERC721EnumerableUpgradeable ECDSAUpgradeable EIP712Upgradeable AccessControlEnumerableUpgradeable ReentrancyGuardUpgradeable StringsUpgradeable MulticallUpgradeable IERC2981Upgradeable Please only apply if you know what the above words mean and you know how to work with them and you are available!

    $28 / hr (Avg Bid)
    $28 / hr Avg Bid
    56 bids

    We are looking for an experienced developer for EVM and Solidity smart contracts for smart BCH infrastructure. We are interested in long-term cooperation and have many projects in the field of distributed ledger technology. This project is divided into 2 milestones Milestone 1 – TASK 1 - Create smart contract that includes all functions and features described in the project paper. PDF - Deploy the smart contract on the smartBCH testnet and get it running - test the functions of the smart contract on smartBCH testnet and show all functions and features required by the project paper - test and fix any bugs and optimize the parameters in consultation with our CTO Timeline for successfully finishing milestone 1 = aprox. 10 working days ( 2 weeks ) Unconditional prerequisite an...

    $1553 (Avg Bid)
    Featured NDA
    $1553 Avg Bid
    42 bids

    I have a task to manage security documents with blockchain sign technology from my boss. I need real experience with etherem and solana net developer with and solidity for a long time. Please show me your github projects to improve your skill. Prepend (I love blockchain) in headline of your bid. Thank you!

    $20 / hr (Avg Bid)
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    33 bids

    Hey there, I need a way to interact with the paraswap swapper directly on polygon and perform swaps directly without using the paraswap api because i get frontrun all the time. Please let me know how you would implement a solution when contacting me () Thanks a lot Lukas

    $318 (Avg Bid)
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    6 bids

    We have an ongoing NFT project. We have all the assets and Metadata recorded, we want a custom function that takes the wallet address and the desired name from the user and mints them the NFT. In general terms the algorithm will be :- - Take the wallet address from the user. - Take the Desired Name from the user ( for eg - if the user enters the name Josephine , the NFT name must be Josephine ) - Mint the NFT in backend with the image uploaded in IPFS and metadata and the name from user and bind all them together - Send the NFT to the address of user. We want a fully developed smart contract to help us implement it on our website. Only Experienced person with knowledge of NFTs and Smart Contracts only Place Your Bids. You must give a detailed rough algorithm to us before we hire you

    $488 (Avg Bid)
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    35 bids

    Hello, We are looking for a blockchain developer to develop our smart contract and mining website. It will be necessary that for presales we can add a whitelist of wallets to access the mint. The project will be on the polygon blockchain. You will need demonstrable experience in this type of development so that we can verify.

    $1340 (Avg Bid)
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    86 bids
    BNB Chain DEX 2 days left
    VERIFIED

    Looking for someone who bas developed a poocoin DEX on BNB Chain - Limit - Market Buy - Stop Loss - BSC - Trading View Charting Library UI Provided. Only bid if you have developed something similar to poocoin and share example URL in your bid. Bids without example of previous DEX with Charting will not be taken into account.

    $2199 (Avg Bid)
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    36 bids
    Dev. blockchain solidity -- 2 2 days left
    VERIFIED

    At the moment we are integrating smartcontract for a casino game and we need to find a way to make a count of wins and losses to make a distribution in the casino token We have already created the contract for the casino chips and the gameplay, but we need to be able to put the users in some way if what they have obtained is a loss in the game or a win and at the end of the day get the benefits of the casino We need to see the possibility of creating an operations book to be able to count the casino operations and thus see the amount of profit it has had. We need to see the possibility of creating an operations book in Factom to be able to count the casino operations and thus see the amount of profit it has had the Casino and count with the feeds that it can have the casino. So we need p...

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

    Yearn vaults allow users to deposit an underlying ERC20 token, and receive yTokens at a fixed exchange rate. Some of the underlying tokens available to deposit can be readily purchased on exchanges, however several yearn vaults take Curve LP tokens as the underlying. A usable integration with Yearn will require the ability to deposit any underlying asset into these Yearn vaults. Hence, following the Set protocol architecture, we need to develop an adapter to deposit and withdraw liquidity from Curve. Here is the specification: @blockdev/BJVjtayP5 Reference of a Uniswap V2 adapter in Set protocol contract repo: If you are interested in my job, please bid with start "Set Protocol"

    $604 (Avg Bid)
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    24 bids

    run to earn, like STEPN, people need to mint nFt to get access to the smart watch needed. With a native token, i would like to build it on Cosmos but with bridge to ETH and BSC

    $2589 (Avg Bid)
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    47 bids

    Posting this project a second time, please read carefully. Need token staking smart contract for binance smart chain. Project requirements: Taxes, Stake 3,6,12 months, Unstake, Participants: You should have developed bnb tokens in your portfolio. We should test it together before payment on binance testnet.

    $354 (Avg Bid)
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    31 bids
    Supplychain 1 day left
    VERIFIED

    Ethereum DApp that demonstrates a Supply Chain flow between a Seller and Buyer. The user story is similar to any commonly used supply chain process. A Seller can add items to the inventory system stored in the blockchain. A Buyer can purchase such items from the inventory system. Additionally a Seller can mark an item as Shipped, and similarly a Buyer can mark an item as Received.

    $3907 (Avg Bid)
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    18 bids

    I am looking for an experienced developer who can work on the Solidity, Blockchain, and other buy/sell features using the API. Implement Buy, Sell (redeem) functionality to Dapp crypto native Implement Buy, Sell Crypto with Fiat IP Blocking Restricted Jurisdictions Access to dapp and marketing website

    $1199 (Avg Bid)
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    37 bids

    Looking for python developer who can work on front end and backend. They need to have experience in solidity, blockchain and Ethereum.

    $44 / hr (Avg Bid)
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    22 bids
    Coin Development 8 hours left

    Coin development like Polygon where the environment can make tokens with gas from our coins forking ethereum, polygon

    $3380 (Avg Bid)
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    46 bids
    NFT Marketplace 8 hours left

    I want develop NFT marketplace with php backend

    $1802 (Avg Bid)
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    75 bids