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    33 δουλειές που βρέθηκαν, με τιμές EUR
    edit ERC721 contract 6 μέρες left
    ΕΠΙΒΕΒΑΙΩΜΕΝΟ

    I want in my ERC721 contract to duplicate the mint function and create an optional one where I can indicate if used that a % or fixed commission is to be paid on each NFT transfer to the wallet indicated in the mint. Creating the additional class on nodejs library.

    €185 (Avg Bid)
    €185 Μέση Προσφορά
    29 προσφορές
    Solidity Smart Contract 6 μέρες left
    ΕΠΙΒΕΒΑΙΩΜΕΝΟ

    Need a basic smart contract for a small mint. ERC 721.

    €402 (Avg Bid)
    €402 Μέση Προσφορά
    68 προσφορές
    Create ERC-721 NFT contract 5 μέρες left
    ΕΠΙΒΕΒΑΙΩΜΕΝΟ

    Looking for help creating an ERC-721 NFT contract.

    €49 / hr (Avg Bid)
    €49 / hr Μέση Προσφορά
    89 προσφορές
    Need help with creating a Launchpad Dashboard 5 μέρες left
    ΕΠΙΒΕΒΑΙΩΜΕΝΟ

    This dashboard will help users to identify their investments portfolio + It should be integrated with our Launchpad easily and a referral program. Enclosed is the Figma for reference- (4)?node-id=0%3A1

    €540 (Avg Bid)
    €540 Μέση Προσφορά
    14 προσφορές
    Freelancer BlockChain Developer 5 μέρες left
    ΕΠΙΒΕΒΑΙΩΜΕΝΟ

    I am looking for an experienced or Fresher who is willing to work on Various blockchain projects. The Experienced candidate must have completed a couple of projects and Freshers willing to learn and implement. We need expertise in the following stacks: React.js, Node.js, TypeScript, Solidity, etc. Implement Buy, Sell Crypto with Fiat Infura The Infura API suite provides instant access over HTTPS and WebSockets to the Ethereum network. IP Blocking Restricted I am looking for only Individual Freelancers, Not a Team or Agency. Looking for start immediately. Thanks,

    €1395 (Avg Bid)
    €1395 Μέση Προσφορά
    61 προσφορές

    Use Ethracer to detect Event-ordering bugs and modify the source code of Ethracer to investigate branch coverage of the dynamic symbolic execution . Dataset contains front-running attacks in Ethereum history. Text me for details

    €553 (Avg Bid)
    Προεξέχον
    €553 Μέση Προσφορά
    73 προσφορές
    Blockchain (Subject Matter Expert) - Part Time 5 μέρες left
    ΕΠΙΒΕΒΑΙΩΜΕΝΟ

    Job Location - Bangalore (As per the requirements of the shoot) What will be your responsibilities? 1. Work as the Subject matter expert for Blockchain - help in the creation of Projects, Assignments, Case Studies, and the overall flow of the Program. 2. Collaborate with teams to shoot high-quality learning content (video) and take ownership of the same 3. Provide the best delivery of the lectures on the said matter. Requirements 1. Excellent verbal Communication and interactive body language. 2. Candidate should understand the given category thoroughly 3. Candidate should have a minimum of 3 years of working experience in Blockchain. 4. Added advantage is having an educational blog, YouTube channel, or past content development/delivery experience 5. Working in the corporate sector for ...

    €361 (Avg Bid)
    €361 Μέση Προσφορά
    6 προσφορές
    sports betting and gaming website with cryptocurrencies 5 μέρες left
    ΕΠΙΒΕΒΑΙΩΜΕΝΟ

    The project is divided into 3 parts, the first is a sports betting system, the second is a random betting system and the third is a casino game. A single cryptocurrency will be used throughout the ecosystem. The main idea is to have something similar to sports betting places: Second part a bet system like Third part is casino game, can be any casino game But the change is going to be that everything is going to be with its own cryptocurrency, the network in which it is going to work will be in the Binance Smart Chain For the web app the stack can be React/ for front end, Python/Node.js for back end template for the design that can be used for development: Please check the file to see more detailed feature breakdown

    €1476 - €3935
    Σφραγισμένο
    €1476 - €3935
    53 προσφορές
    Tutorial Fork Pancakeswap and Olympus DAO 5 μέρες left
    ΕΠΙΒΕΒΑΙΩΜΕΝΟ

    Hi, i need documentation about how to Fork Pancakeswap and Olympus DAO in Tron and Celo Blockchains. The documentation should be type step by step tutorial. Payment will be made once it is verified that the documents work correctly. i want to well-written documentation which explained step by step how to fork Pancakeswap (exchange, farms, pools-staking and lottery - if you can include IFO, perfect) for Tron and Celo Blockchain. Documentation about how to manage Pancakeswap (add, remove LP Pairs, farms, lottery and pools, draw lottery, set deposit Fee on farms and pools, etc...). Same for Olympus DAO, well-written documentation which explained step by step how to fork it for Tron and Celo Blockchain and documentation about how to manage, means it, how bonds works (high level explanation)...

    €265 (Avg Bid)
    €265 Μέση Προσφορά
    16 προσφορές
    Build, possibly using fork, a crypto platform 4 μέρες left
    ΕΠΙΒΕΒΑΙΩΜΕΝΟ

    To build a crypto exchange platform with functionality like converting exchange rates, trade coins/tokens, lottery, cross chain transferring, farming, liquidity pools. Deliverance will be a full platform including mobile and possible admin panel. Blockchain and smart contract experience is a must. The site will start on the BSC and Avax chains. Features and requirements: Front end back end exchange/swap farming liquidity smart contracts - (these will be audited and checked) Examples: Please start your reply with the answer to (4 x 1) - 2 =

    €11 / hr (Avg Bid)
    €11 / hr Μέση Προσφορά
    38 προσφορές
    Custom dashboard for ICO Sale website 4 μέρες left
    ΕΠΙΒΕΒΑΙΩΜΕΝΟ

    Hey there, I need someone to build user dashboard for ICO sale we don't need smart contract or anything, just a basic dashboard to manage ICO sales. Front end for user to register and track ICO status Back end to manage all of the users and see statistics

    €1067 (Avg Bid)
    €1067 Μέση Προσφορά
    84 προσφορές
    Solidity smart contract token 3 μέρες left
    ΕΠΙΒΕΒΑΙΩΜΕΝΟ

    Hello, looking for a solidity dev that can make a simple but specific smart contract for me. Please message me for more details if you're an experienced solidity dev.

    €551 (Avg Bid)
    €551 Μέση Προσφορά
    96 προσφορές

    I want to create contract that transfer a token (Polygon) To Another Wallet Automatically . There are Approx 250 wallet that need To Transfer Token To One Single Wallet

    €454 (Avg Bid)
    €454 Μέση Προσφορά
    7 προσφορές
    CLI script for web3 data queries and wallet creation 3 μέρες left
    ΕΠΙΒΕΒΑΙΩΜΕΝΟ

    I want a custom CLI script to create blockchain wallets from bip39 method using with/without custom input, then run a custom query on those wallets across multiple chain on either one off mode or continuous mode, and output results based on the type of query. This script has 5 sections: 1. Wallets(creation, selection, or manual input) 2. Scrape Web3( all available blockchain or based on user choice.)[Initially we can use API from multitude of services and later upgrade to saving a copy of chain locally or running a node to query data] ( Maintain database of all the actions locally, fetch custom reports based on user input) 4. Authentication and data security (open to ideas, but basic requirement is to create profiles and then run separate data requests) 5. Reports(can be visual using ch...

    €1189 (Avg Bid)
    €1189 Μέση Προσφορά
    3 προσφορές

    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.

    €1846 (Avg Bid)
    €1846 Μέση Προσφορά
    15 προσφορές
    build me an entire DEX -- 2 3 μέρες left
    ΕΠΙΒΕΒΑΙΩΜΕΝΟ

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

    €2821 (Avg Bid)
    €2821 Μέση Προσφορά
    15 προσφορές
    build me an entire DEX 3 μέρες left
    ΕΠΙΒΕΒΑΙΩΜΕΝΟ

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

    €564 (Avg Bid)
    €564 Μέση Προσφορά
    9 προσφορές

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

    €103 (Avg Bid)
    €103 Μέση Προσφορά
    21 προσφορές

    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"

    €110 (Avg Bid)
    €110 Μέση Προσφορά
    13 προσφορές
    Lottery Smart Contract 1 μέρα left
    ΕΠΙΒΕΒΑΙΩΜΕΝΟ

    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

    €561 (Avg Bid)
    €561 Μέση Προσφορά
    109 προσφορές

    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.

    €348 (Avg Bid)
    €348 Μέση Προσφορά
    34 προσφορές

    Требуется создать криптовалютную биржу под ключ. По функционалу: - спотовая торговля - маржинальная торговля - фьючерсы - возможность листинга токенов - возможность проведения Token ICO - НАТИВНАЯ ТОРГОВЛЯ (без подключения к бинанс и прочим провайдерам) Прочие моменты буду обсуждать с человеком, который в этом разбирается.

    €34431 (Avg Bid)
    €34431 Μέση Προσφορά
    1 προσφορές
    Blockchain & Token 1 μέρα left

    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.

    €589 (Avg Bid)
    €589 Μέση Προσφορά
    63 προσφορές
    Blockchain & Token 23 ώρες left
    ΕΠΙΒΕΒΑΙΩΜΕΝΟ

    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.

    €639 (Avg Bid)
    €639 Μέση Προσφορά
    47 προσφορές
    update create simple uplaoder dapp with web3 new way 10 ώρες left
    ΕΠΙΒΕΒΑΙΩΜΕΝΟ

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

    €10 / hr (Avg Bid)
    €10 / hr Μέση Προσφορά
    18 προσφορές
    change NFT upload file function from ipfs infua to ipfs pinata 5 ώρες left
    ΕΠΙΒΕΒΑΙΩΜΕΝΟ

    i have project uplaod the nfts to infura ipfs and want to change the end point to please need it fast its should not take 2 hours done the file at ATTACH

    €23 (Avg Bid)
    €23 Μέση Προσφορά
    4 προσφορές
    Tokenomics for a global crypto project 4 ώρες left
    ΕΠΙΒΕΒΑΙΩΜΕΝΟ

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

    €57 (Avg Bid)
    €57 Μέση Προσφορά
    15 προσφορές
    create simple uplaoder dapp with web3 3 ώρες left
    ΕΠΙΒΕΒΑΙΩΜΕΝΟ

    i only need the function that is save image to ipfs, working create sekect iage and only button click save at at ipfs you can only update teh function here to work

    €37 (Avg Bid)
    €37 Μέση Προσφορά
    12 προσφορές

    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...

    €5041 (Avg Bid)
    €5041 Μέση Προσφορά
    24 προσφορές
    URGENT - Simple NFT Create function fix now 2 ώρες left
    ΕΠΙΒΕΒΑΙΩΜΕΝΟ

    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)
    €9 / hr Μέση Προσφορά
    21 προσφορές

    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

    €360 (Avg Bid)
    €360 Μέση Προσφορά
    24 προσφορές
    URGENT - Simple NFT Create function fix 1 ώρα left
    ΕΠΙΒΕΒΑΙΩΜΕΝΟ

    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

    €41 (Avg Bid)
    €41 Μέση Προσφορά
    15 προσφορές
    Build Flutter Smart Contract dapp 65 μέρες left
    ΕΠΙΒΕΒΑΙΩΜΕΝΟ

    I have Ethereum smart contract. And I need mobile flutter app need to call method on contract. Flutter app must send transaction to mobile metamask wallet.

    €291 (Avg Bid)
    €291 Μέση Προσφορά
    35 προσφορές