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    5,759 ethereum jobs found, pricing in USD

    Looking for someone to develop a smart contract for an NFT Collection on Solana blockchain. The original collection will have 1000 NFT (we will provide the design). Each NFT owner will be able to collect 10 coins (specific for this NFT collection and built on Solana). Each owner will be able to burn a...Solana). Each owner will be able to burn a specific amount of coins to generate an additional NFT from the collection. Required: -Put the NFT on Solana blockchain -Create the token on Solana -Allow the NFT owner to claim everyday a specific number of coins -Allow the NFT owner to burn specific amount of coins to mint a new NFT from the collection Similar projects with yield concept built on Ethereum: Mutant Cats Bears Deluxe Possible to build the collection on Polygon if easier a...

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    we need a fullstack blockchain developer who can help us on our p2e pvp nft solana blockchain game. list of task: 1. contract build: 2. web login portal: 3. install to server and deploy to devnet: 4. playfab api build Full-Stack Blockchain developer experience with multiple Blockchain Technology platforms (Ethereum/Solana/Hyperledger). Worked on variety of Frontend JavaScript frameworks like AngularJS, React.JS, JQuery, and good knowledge in Ember.JS

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    I have a wallet that when ether is sent to it i need it to automatically transfer into another wallet. NodeJS, Web3js, and to be used Infura, Etherscan

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    NFT Marketplace -- 3 6 days left
    VERIFIED

    We are looking to built an NFT marketplace to be connected to our gaming project. The NFT project should be built on the top of Ethereum and Polygon. Users should be able to use multiple wallets. The NFT marketplace should include digital and physical assets. The marketplace should be sort of cloned from Opeansea and Mintable. The hired team will build the frontend using React. We will provide logo, artworks, and full template but the design for all pages. We want turnkey project and that is why WE RECOMMEND BIDDERS TO READ THE PROJECT DESCRIPTION AND DON'T WASTE OUR TIME. We will work within Freelancer platform after we agree to a price and duration. Milestones will be created to release payments as the development progresses. We will not release any payment until 50% of the p...

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    Hello, I need a ...my project. I need a copy of this website like this () i can easily upload to netlify and change the logo on the header and the background with an image or so so i can reuse it as a template. Then i want the feature that when people click the "register" button it opens up metamask and ask to sign a smart contract : this one () i want it with my eth adress. and then when done and signed it brings the user back to a page the same as this one () but with "Registered Successfully" written. Please ONLY message me if you can do it otherwise dont waste my time. Thank you. (i will pay a small sum for dev and then a percentage of the earnings of the website)

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    I'm currently writing an Ethereum / ERC Java Program to interact with Flashbots. This will include interacting with the Ethereum Network using web3[currently open to suggestions].

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    The unique technology of smart contracts in the blockchain of the Binance Smart Chain, Tron and Ethereum networks allows you to create your own team and make a profit on completely transparent terms, without risks and restrictions.

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    ...someone to help me understand how to access data on the Ethereum blockchain and then write a C# .NET application to access this data. The following website allows users to buy and sell NFTs. Each time someone puts a NFT for sale a Single Sale Offer is created. You can view the Single Sale Offers here; Using this query; query { transferMarket { singleSaleOffers { nodes { id blockchainId card { slug } } } } } Each Single Sale Offer has a Blockchain Id. I would like to first understand if I can view this Single Sale Offer on the Ethereum blockchain? If that is possible I would like C# .NET

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    Logo design 4 days left

    I need a logo for Xenium. Xenium is a protocol, hardware device, and website that allows people to generate single-use 'claim codes'; by tapping their phone on the device, they are able to instantly prove that they were physic...business cards, proving attendance at a conference or event, digital geocaching, awarding of virtual 'swag', etc etc. The logo will be used primarily on a website, but also printed on a sticker on the physical device, so it needs to be suitable for both print and web. Ideally the logo should convey some of: - A digital <-> physical connection - Claiming a gift or prize - Interaction with Ethereum/web3 - The origin of the word Xenium, meaning a traditional hospitality gift Final product should include both vector (SVG) and ras...

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    2D Metaverse Scene 4 days left
    VERIFIED

    The brief is as follows: View the attachment. The end result is to be similar in design to the example attached. Fewer plants and foliage please, with more emphasis on the digital assets content bein...A Scene depicting people standing around a hologram of a building development for Tokenisation v. Lending Scenario - could be a scene with a sign for someone approving DeFi crypto loans. This task must be done in colour using a minimum of three colours - purple, blue and your choice of a third colour. When submitting a quote to do this task, please ensure you have something similar to the Ethereum drawing example in your portfolio. There will be ongoing work available in short sprints for the right applicant. Feel free to message me with any questions. I look forward to hearing...

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    We need to make NFT market with klaytn and ethereum. Klay actually did hard forked it ethereum chain. We need to put both chain on NFT market to interact with both chain. Like a opensea market . Opensea has klaytn and ethereum and poligon but we only need it klaytn and ethereum Let me know I really want it people who have done this multi chain before I would like to hire it otherwise please do not chat to me thanks. page 2. NFT market with both chain ( klaytn and ethereum) Kikas and MetaMask wallet need to integrate it

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    We're find a Blockchain developer to work in stablecoin project... is important to be considered experienced in others projects Ethereum .

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    ...currencies has been implemented. Your job is to change the variables to improve the output and incorporate how to add other algorithms to the solution. We will provide you with the exact requirements that we are looking for. Points to Note: 1. We are currently using the Q learning, PPO and other main algorithms 2. We have data from about 12 crypto coins, the main ones primarily include Bitcoin and ethereum. 3. The data ranges from 2013 upto 2020. There is no consensus currently on how much training should be used for the bot (trading agent in our case ) to mature. We have run the algo at about 200 epochs and that is sufficient to mature it. 4. The code is purely in Python In summary: the goal is to implement reinforcement learning to make an automatic trading agent that learn...

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    I need a solidity smart contract as well as a minting dapp to mint my NFT collection onto the ethereum blockchain. This contract will be a fairly standard smart contract that allows people to purchase the digital art. Other features required include automatic airdrops of ETH and art to match our roadmap, as well as a free minting feature for a select group of investors.

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    Im in search for a developer who can make me an NFT marketplace. Preferably someone who has previous knowledge in the DeFi space. I need someone that can do everything from backend to frontend to integrating contracts into the platform, UI/UX, and be able to work with ERC721 and the ethereum/avalanche chain. Something along the lines of:

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    Hi, NeftyFlex is a fast-growing platform that is focused on NFT at various blockchains like as Ethereum, BSC and Solana. I am looking for a professional NFT developer highy skilled in Solidity and Rust. More details will be shared on DM.

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    Hi I am looking to hire a well-experienced blockchain developer for my team's upcoming NFT project. We are in process of launching an NFT Project -Blockchain stack Ethereum, Avalanche, Solana, Polygon, Immutable X and Cardano -Responsibilities smart-contract metadata upload 2 Web landing page with full metadata upload, smart contract, whitelist interrogation, public sale interrogations 1 website company page like Larva Labs metamask integration whitelist integration Website creation Website Design -Must have experience NFT marketplace NFT minting site Smart contract audit, writing and optimization Blockchain NFT Game development. Trading bot. Please bid if you really want in team. NOTE: Don't bid if your hourly rate is less than $30.

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    ERC-20 on Ethereum that has to have a settable sell tax which will get burned to a dead wallet. + prevention against front-running(sandwich) bots. Please chat me and greet me with "Hi CYBR" in order for me to know you are not spammers/bots.

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    I need to create a website, where people can login buy and sell bitcoin ethereum with live charts, you can use template i already have a template that needs some coding to connect some pages and create a login and wallet page

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    Rule To complete transactions users need a reference code owner receives 2% from every sell transaction.  Reference code is gotten through registration        Registration form data,    google address location    Ethereum Address    Email    Phone    Name   After registration user gets an alphanumeric code eg, GT546 Where a transaction of 2000usdt is completed with GT546, the owner of GT546 receives 2% of the transaction in usdt. 1: Integrate payment API for buy ETH with debit card (Transak) 2: Sends Tab,    visitor sends ETH to admin wallet, admin wallet automatically sends 2% of the transaction converted    to usdt to the reference ID, t...

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    Ethereum Sweeper 3 days left
    VERIFIED

    Hello, I would like to know if it was possible to make an ethereum sweeper That basically monitors a wallet and everytime there's ETH transfered on it, it transfers that to another wallet Thank you !

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    Create a crypto token 2 days left
    VERIFIED

    The project consist of building a crypto token using Ethereum blockchain.

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    I need a solidity smart contract as well as a minting dapp to mint my NFT collection onto the ethereum blockchain. This contract will be a fairly standard smart contract that allows people to purchase the digital art. Other features required include automatic airdrops of ETH and art to match our roadmap, as well as a free minting feature for a select group of investors.

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    The Voodies NFT is a spanish crypto art project which will be released on the Ethereum blockchain. The initial idea is to launch 8888 NFTs. WE ARE LOOKING FOR A MARKETING PROFILE WHICH MAY HELP US WITH GROW A ENGANGED COMMUNITY We offer you to join our team and take profit of the benefits as much as the founder members. Check our social media: [Removed by Freelancer.com Admin for offsiting - please see Section 13 of our Terms and Conditions] Web: Twitter: Instagram: Don't forget to check our art!!!

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    I want to integrate Sushiswap swap module into my webapp. Just "swap" without "limit" or "liquidity" functions. This module in sushiswap works with "bsc" "polygon" "ethereum" and "avalanche" chains. Swap module:

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    Collect a list of 100 websites/directories/ blogs which list or rate companies accepting crypto payments. Provide information in Google Sheets document with filled information ...add traffic and domain rating metrics from and How? 1. Prepare a list using Google search results, Ahref or any other tool which might serve the purpose. a. Use various keywords to find lists e.x. b. Top companies accepting cryptocurrencies c. Who Accepts [Crypto]/ Bitcoin/ Litecoin/ ethereum/ XRP and etc. d. Crypto directories e. Where you can pay with [Crypto]/ Bitcoin/ Litecoin/ ethereum/ XRP and etc. f. Where I can spend [Crypto]/ Bitcoin/ Litecoin/ ethereum/ XRP and etc. 2. Use competing domains with target websites (seo tools like ahrefs needed) Payment 100 EUR Bonus task + 20 EUR

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    Hello, we are looking for a developer to work with us on writing an Ethereum smart contract and setting up the contract to mint our NFTs through our website and onto an NFT marketplace such as OpenSea.

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    ...bid or purchase). There whould be several options here within buying, bidding or selling an NFT. In time we would also like a monitoring function for projects. It will need to be able to run without interaction so will required to use custom mnemonic as per the opensea example here: Initially it will be only for Ethereum ERC721 Tokens, but then the addition of Matic (Polygon) / Sol (Solana) may come later as well. This could be a longterm project in which we will keep updating and making the product better with the developer that is chosen. Developer Requirements: Must have had previous experience working on smart contract / web3 type development making this project something you’d be familiar with Must be

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    Simple presentation on NFTs 5 hours left
    VERIFIED

    Need someoen to make an interactive presentation with slides, audio , video clips for NFTs . it needs to be simple and easy so that someone who doesnt understand NFTS can also understand it. What are NFTs, Metamask, Ethereum, polygon, Gas fees. how to buy. how to sell. Whitelist. launch. How to indentify scammers, how to identify good upcominng projects. How to use discord, twitter and youtube to find new projects. Which websites to go to. Which people to follow on twitter.

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    Need a full stack programmer experienced in html, css and JavaScript to build out a decentralized app using web 3. I will provide source code for js but the heavy lifting will be in the html and css design. Depending on how this project goes, I may have other work for you.

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    I need a very simple, visually appealing Iphone app that has a built in smart contract to do transactions with erc20 tokens. A different type of smart contract sending different type of tokens could work as well. I just am more familiar with the ethereum smart contract eco system

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    I need you to have an advisory about a contract in the ethereum blockchain (mainnet) in order to understand what happened with some transactions. The smart contract is a fork of uniswap and it seems that an external contract extract the liquidity but we don't understand how. Please, if you have the knowledge to give to us that kind of explanation, drop here a message and we can talk as soon as possible, we need this urgently.

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    *Design Coin Futures Trading Platform Designed like Binance All of them are web-based, and we need a Play Store or App Store application in the future. *Features Withdrawal and deposit through cryptocurrency (and it’s all automatically when user want) The coins that support deposit and withdrawal are Bitcoin, Ethereum, Ripple, USDT When cryptocurrency is deposited, real-time exchange rates will be applied and converted into US dollars. When withdrawing US dollars, they withdraw them into cryptocurrency using real-time exchange rates. Referral Commission system (I'll explain more below.) Language change function. (English, Russian, Chicness, Korean, Spanish) User need basic futures trading functions provided by Binance such as set leverage and stop limit. Admin can set a...

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    I need a developer who understands Uniswap/Ethereum & Metamask to build me a bot. I am expecting to receive Ethereum tokens and am not happy with the current state of the market. I'm looking for an automated bot to do the following: 1. Detect that an Ethereum wallet has just received a token (which I must pre-configure) 2. Determine the "High" gas fee from 3. Goto Uniswap for the token received & approve the transaction - using the High gas fee 4. Once approved transaction is confirmed, sell the tokens at market price - using the High gas fee

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    ...on any OpenSea related protocol for confirming a transaction o Automating an Ethereum Mainnet connected Wallet , e.g. MetaMask where Zebra connects to the wallet and provides the wallet with a specific Gas fee (GWEI) and Priority Level, which information Zebra pulls from Database Z, and then sends it to the mempool - Zebra furthermore continuously exports its actions and status to Database Z and also displays this on an interface itself - Zebra has an Emergency Stop Button which cancels all ongoing transaction processes - Zebra offers, aside from transactions being executed fully automatically, an option for the user to have Zebra run semi-automatically, meaning that before sending any transaction to the Ethereum Mempool the user has to manually hit a confirm button, whi...

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    We would like to build an NFT platform with the same functionality like OpenSea. It should support NFT minting and trading on Ethereum, Polygon, and BSC. In general it should look similar to OpenSea . Blockchain and NFT experience is a must for this job. Please submit your offers. Submit your proposal document with demo.

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    I need a community-based token that will have reflections, staking, yield farming and buy back and burns. Needs to be Ethereum based, but would like to build a bridge between Ethereum and Pancake Swap. Will also need to be Audited by Certik....

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    want to deploy blockchain base e-voting system as a college project. so want developer help! now i m facing some difficulties for migrate frontend to backend have a github sources files for that but they is old stack on azure blockchain. so now want to develop on polygon mainnet ya any other testnet like polygon, ethereum please check this : but this is on azure blockchain now i want to implement on polygon /ethereum network.

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    Math and Cody - We are a blockchain company based out of India working on ethereum devtools and decentralized finance. We are partnering up with a award-winning, software company, and we are looking for an experienced blockchain developer with strong experience in smart-contract development. ** Applicant must be an independent Developer ** Agencies must not apply for this job ** Preferred based out of India Job Description : -------------------- Currently, we are seeking an experienced, smart-contract blockchain developer. The developer must have at-least 2 years of relevant working experience in blockchain development. Responsibilities: ---------------- Proven experience interacting with the EVM and writing high-quality, well-tested Solidity Deep understanding of EVM, Solidi...

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    Hi, I have deployed a smart contract to the Ethereum blockchain through some online tutorials but my NFTs don't appear on my OpenSea. I need someone to read my contract and see if they could help me rectify the problem.

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    I want to build an Ethereum exchange website.

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    Looking for a blockchain engineer for a 2-4-month project. You will work with a team of savvy crypto enthusiasts and experts. There are two parts to this project: - Assisting in creating the smart contract for the MVP (2-4 months); - Assisting in developing additional features post-MVP; We are building an NFT trading platform. We want you to help us create an NFT trading smart contract on the Ethereum blockchain. If you are interested in NFT's and the blockchain ecosystem, we want to hear from you! Option to extend if the 2-4-month period goes well. Required Experience: Contact with the blockchain and NFT ecosystem is mandatory; Good foundational knowledge of Solidity and blockchain development is mandatory; Experience in web3 projects is a huge plus; The goal here is to crea...

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    nft smart contract need building Pair to website mint link ERC721 on ethereum blockchain 24 hour support during live Project action and project implementation included You have to have completed a nft live drop before from website via smart contract ( NOT A MARKET PLACE ) PLS DO NOT MESSAGE AND WASTE MY TIME Similar to this website

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    need coder to convert written documents into smart contracts on ethereum

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    Experience with , Solidity Front-end development skills with React Experience with Node JS and developing RESTful API Good knowledge of NoSql and experience with Relational Databases is a must Good knowledge of technological understanding of Ethereum Strong researcher skills in the field of distributed systems, blockchain technologies, DeFi, smart contracts

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    Create a P2E game on the Ethereum blockchain using ERC-20 Token I want to create a Pool P2E version game you walk into a Club house and play Pool Multi player mode up to 4 players the game is reversed start with black ball to brake Then white ball is how you win all the balls have herb logos that’s the concept. You bid with tokens per pool game winner takes all.

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    Details to be shared later considering the confidentiality of the project.

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    ...not the same project. To be fast you will edit your readymade script. ✳️ The difference with my project regarding those current trading platforms is that: 1️⃣ On Binance and other trading platforms it is cryptos and dollar trading. ➡️ But in my case no dollar use. Have to use another currency which is XOF. XOF is some Africa countries fiat currency. With 10 Crypto coins Integration: Bitcoin, Ethereum, BNB Bep20, BUSD Bep20, USDT Bep20, USDT Trc20, USDT Erc20, Dogecoin, Tron, Litecoin. 2️⃣ On Binance and other trading platform no e-currencies trading at all. Only 2 pairs trading: - crypto/dollar - crypto/crypto ➡️ But I need 2 E-currencies intégration: PM, Payeer. So will be 4 pairs trading: - Crypto/XOF - Crypto/crypto - E-currency/XOF - E-currency/crypto Possibility...

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    We have frontend ready for our website for nft art and looking for a developer who already has nft backend and dashboard so it can be connected with our website, please be noted we need...frontend ready for our website for nft art and looking for a developer who already has nft backend and dashboard so it can be connected with our website, please be noted we need a complete solution which has a marketplace, collecters dashbaord, artist dashboard, minting of token etc. So our key requirements are : 1. Admin panel 2. integrate frontend with 4 blockchain platform ( polygon, BSC, Ethereum, Fantom) 3. minting function. add SIMBHA at start of your bid so i can understand you have read project details completely and have understood requirement and have a ready made nft backend/admin ...

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    Hello, Our team is looking for assistance to manage a smart contract development for our NFT with a collection of 10 000 assets with the following elements: - Smart contract development (Ethereum, Polygon or Solana blockchain, not yet decided) - Implementation of custom rules : max assets per wallet, giveaway, raffle, white list, reveal, dutch auction, burn system, staking system, royalty split, revenue split - Creation and setup of Smart contract owner wallet and account - Deployment on the blockchain - Securization of the smart contract - Smart contact testing - Upload of metadata and images on ipfs - Optimization strategy for the costs of gas fees Please let us know similar example of Smart contract you have been created as well as a preliminary budget and time for developmen...

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