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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    273 jobs found, pricing in USD
    Unity 3d game 6 days left
    VERIFIED

    I need someone to help me trough team viewer 1 OR 2 HOURS ONLY on my unity 3d game

    $41 / hr (Avg Bid)
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    5 bids

    The task is simply a 2-page website one with a payment option and metamask function for buying and selling crypto, the other a simple page webpage.

    $10 / hr (Avg Bid)
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    3 bids
    Need a Smart Contract Created 6 days left
    VERIFIED

    I’m looking to hire a developer with solid experience in creating flash loans/smart contracts for a very particular purpose which I will explain further. MUST be fluent in Solidity and English. No exceptions.

    $16 / hr (Avg Bid)
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    14 bids
    Retrieve NFT token burn data 6 days left
    VERIFIED

    The project website: , advises that 2081 NFT's have been burned from a total of 125k minted in this project: The tasks are: 1. Locate, retrieve and provide me the burned token data for each burned NFT along with its 4 characteristics: a. Id # b. Attribute c. Spectacular d. Frame me how to retrieve the burned token data so I may do it on a daily basis

    $138 (Avg Bid)
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    9 bids
    Trophy icon Animated NFT Set 6 days left

    Hello designers. I'm looking for someone who can create animated NFT sets for me. I uploaded an example. It should be a Goblin set, it can always be the same character. only different pictures and best numbered eg. 1-10 provisional. For example, I imagine a picture with an empty pot and a goblin running away with a full bag of blockchain coins. such as. polygon eth bitcoin etc.

    $113 (Avg Bid)
    Guaranteed
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    3 entries

    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

    $1306 (Avg Bid)
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    19 bids
    Cardano Swap 6 days left
    VERIFIED

    I want swap any asset on SundaeSwap with code. I dont want use SundaeSwap user interface. Programmer must have experience cardano programming and haskell & plutus coding. With this code I should be able to: -Connecting cardano mainnet -Login to my wallet with my passphrase or mnemonic in code -Swapping any asset(If asset have liquidity on sundaeswap dex) on Sundaeswap -Swapping asset the amount i want -Cancel the transaction if the asset swap result does not give me at least the amount I want (Slippage Function)

    $505 (Avg Bid)
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    18 bids

    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.

    $37 / hr (Avg Bid)
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    23 bids
    Smart contract 6 days left

    Hi! I wanted to ask you if you can help me out to write a smart contract using ethereum. I have a sole company in the Netherlands and I want to make a contract with a company in Uruguay to consultancy, but I'm not sure how we can use smart contracts to do this. Can you "translate" a common contract into a smart contract?

    $541 (Avg Bid)
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    cryptocurrency exchange 6 days left
    VERIFIED

    I"m looking for a person who can build me a new Cryptocurrency exchange. And need to guide me How this works.

    $470 (Avg Bid)
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    7 bids

    We own all the licensing from Ethereumico for the NFT minting plugins and crypto currency products with wallet. We also own licenses for WC Vendors Pro and associated plugins for the NFT minting. We have an existing smart contract deployed, we just need a site stood up and configured with all plugins including Elementor Pro for production use.

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    30 bids

    Requirements 1. We don't need a simple coin trading system, we only need futures trading. 2. Deposits and withdrawals are made through an automated system and can be received with various coins. 3. The deposited coins are converted into USDT using the real-time exchange rate. 4. When withdrawing money, it will be withdrawn from USDT to coin using the real-time exchange rate. futures trading is not investment globaly . It means It’s not p2p it’s p2admin Users actually deposit their real coins and change them to USDT to do futures trading, but they play games with websites.(For example, if a user makes money by investing in futures, the site pays that much money. Conversely, if a user loses money, the site benefits.) 6. We can create the master partner. Th...

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    I need 1 page site with only one of the functions wonderland has, not all of them. I already have a logo for the site ! (this project is NOT a decentralized reserve currency in any way!-) This site will contain the ability to mint the native token of the site( which I have already created and posses) at the discount shown in return for the end user supplying one of the 5 assets/pairs ( USDC.e, WETH.e, AVAX, USDT.e, MIM) ( please see wl-mint for layout and wl-mint page for actually minting process) Based on the percent discount shown I would like a hidden percentage of that minting process to go to the wallet address of my choosing. I would also like if possible to have the ability to change the visible discount and the percentage I receive on the fly via some sort of web in...

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    23 bids
    cryptocurrency mlm project 6 days left
    VERIFIED

    cryptocurrency mlm Project bitcoin creation , selleing ,buying, income different level

    $809 (Avg Bid)
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    8 bids

    $250.00 – 400.00 USD We want the software to do the below stuff: It should generate Btc Fake Transaction(flash btc) with the below features: - -Defined the time that the transaction can remain in the wallet - -Defined the charges of the blockchain networks for a quick confirmation - -VPN and TOR options included with proxy - -Can check the blockchain address before transaction - -Transaction can get full confirmation - -Support all wallet - -Segwit and legacy address – -100% confirmed transaction - You can spend bitcoins easily on any other address (Segwit address, legacy, Segwit / bch32) - - it works with all wallets. - -Should be tradable like real btc. withdraw from exchange not necessary Can be transfarable wallet to wallet more then 5 times minimum previousr experience ar...

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    Pancakeswap 6 days left
    VERIFIED

    I gonna add a "Prediction Trading" similar to Pancakeswap to My DEX

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    8 bids

    Hi, I would like to develop a web app that allows play-to-earn gamers (Decentral Land, Gala, Sandbox, etc.) to find and manage their assets on different trading sites - such as OpenSea. Inexperienced gamers will be given tools to calculate the return on investment of their metaverse items, for example. Later, the items will also be able to be bought and sold automatically via the platform. Technologically, everything should also be able to be operated from a mobile phone, so that a development with e.g. Fluttr is recommended. For the implementation, I need a team including a solution architect / project manager, front-end and back-end developers. Looking for a team with a focus on APIs and Merging Data from different sources. First Thing i need to understand is the solution architectur...

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    NDA
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    30 bids

    I gonna add a "Prediction Trading" similar to Pancakeswap to My DEX.

    $21 / hr (Avg Bid)
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    Hello we are looking for a Experienced Stellar Blockchain Developer to develop a Stellar Swap Interface. Only Freelancers please, companies excuse.

    $590 (Avg Bid)
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    24 bids
    NFT Minting 6 days left

    We are interested in building an app with admin panel and customer facing front end that would allow us to create mint on demand NFT collections, sell them, resell them, etc. We want this to be built in Ravencoin, a fork of Bitcoin, so familiarity with that and/or RPC command interfacing is needed. Please use as an example of most of the utility we need.

    $2306 (Avg Bid)
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    45 bids
    Block Chain Developer 6 days left
    VERIFIED

    I need a blockchain developer for my project

    $516 (Avg Bid)
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    21 bids

    I need someone who has experience about hive chain

    $1361 (Avg Bid)
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    11 bids

    PLEASE NOTE IF YOU ARE NOT COMFORTABLE WITH ENCRYPTION / SALT / KEY DERIVATION, please do not bid. Javascript / WebCrypto API / AES / PBKDF2 Dear, I need 2 scripts: 2 webpages : - one to javascript AES encrypt (from a password) & upload files to a webserver - one to download AES un-crypt file. 1- Webpage to encrypt & upload files to an webserver - form to enter the password & select files to upload - password normalization UTF8 - password derivation PBKDF2 SHA256 + 128bit SALT - chunk encryption using Webcrypto API / AES 256 GCM authenticated mode - compatible with all browsers (safari/chrome/edge) - support uploading file of 100gb - upload with chunk AES GCM - support pause/resume - support upload multiples files - progress bar - encrypted filename PS...

    $574 (Avg Bid)
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    NFT ART PIECES 6 days left
    VERIFIED

    This is a true story: We have been scammed by a single individual and countless victims (30), has loss more than millions of dollars. We want to create this NFT project, to tell a story and raise awareness. So many of you have known that we have fallen prey to a delusional, depressed, psychopath and even after hearing many many other stories of scam ranging from phishing, to sms, to call to investment scams/frauds. I hope that we are able to contribute back to the community with a community. The main aim is to be able to distribute back the money to build a good infrastructure for us to sustain yet support those in need. I believe that through this process, given some that are extremely experienced, we are still clueless and yet confused given our vulnerable state. I believe the team wil...

    $391 (Avg Bid)
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    19 bids
    React Web3 Project 6 days left
    VERIFIED

    The dashboard looks a little complicated but its very simple just needs to show our BSC token, regular BSC and our nft.

    $19 / hr (Avg Bid)
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    25 bids

    Hello, We are looking for someone with experience in Solidity Smart Contracts ERC721 that can create a Full Audit of our Smart Contract. 1. Check code for Errors, Mistakes, Future Problems, Logic Issues. 2. Compile and Test Deploy on Rinkeby Successfully 3. Verify and Publish in Rinkeby Etherscan 4. Test all functions, whitelist, minting, flip state, change price, etc. Make sure everything works and it causes no logic issues 5. Create sample collection on Test OpenSea to see that minted item appears on opensea 6. SetBaseUrl test to make sure opensea is retrieving the data In summary, check that everything works well and that we will have no problems when deploying on mainnet. The Smart Contract is already READY and using OpenZeppellin so in theory it should have no issues but I wa...

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    We are looking for someone who can make the whole report (word) with proper citations of information they go on the NFT market in India The report should involve the following: - Indian "NFT" market research. - Market formation process and current situation & updates. - Market size (Appox money spent in NFT, number of cases/transactions, etc.) - "NFT" exchange platforms/trading sites, their current status, process, and the number of transactions on each platform. - What are the types of "NFT" issued/created the most and how are people getting involved in NFT. - Major "NFT" transaction sample cases in India - What is the future of "NFT" market in India.

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    43 bids

    We want develop new blockchain and coin with mining and stacking features

    $9830 (Avg Bid)
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    6 bids

    We just need the coding to create a button on a page that allows people to send a fixed amount of Eth to a metamask wallet. Just like when people mint an NFT if you are familiar with that. They link their metamask, click a button to mint an NFT for lets say .2 eth, and that money gets sent from their metamask to the web page owners metamask wallet. Can’t figure out the coding to attach that function to a button to make that happen. Let me know if you can help.

    $23 / hr (Avg Bid)
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    We have started building one dApp on ARK blockchain, but we are lack of knowledge on it, so we are gonna hire someone who has valuable experience on it. If you have good knowledge and development experience on it, please reach out to me. FYI Weekly payment would be fine(about 700USD) you can track your time.

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    We are looking for a company or a group of people to develop a "Prediction Trading" similar to Pancakeswap. The implementation is for / We have 30 working days to realize this. (01.03.2022 is launch day) Requirements: Prediction Trading BNB 1. 5% fees for participation in prediction trading which will be collected in a pool. 2. every 6 hours, 4 times a day, a buyback is executed with all collected fees. This means that the collected fees will automatically buy our Native Token and send it to the Burn address. 2. every 5 minutes a new prediction trading starts automatically for BNB 3. you provide support for us even after the implementation. 4. you can do it and have experience and don't waste our time.

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    We planning to develop new blockchain with POW and POS hybrid model.. and all basic features included Please reach if you have good experience in new blockchain development More details can discus PM

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    Smart Contract Consultation 6 days left
    VERIFIED

    We want to take one hour Consultation where you would explain us at high level on 1. How smart contract works 2. How we can validate tokens created using smart contract 3. How smart contract is linked to wallets 4. How airdrop works 5. How smart contract linked to token purchases 5. Smart contract linked to liquidity pool 7. Address some of our queries If meeting goes more than hour we can pay extra. Only experts who have previous knowledge working on smart contract, tokenization can apply

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    Fix a contract issue for me 6 days left
    VERIFIED

    I have recently forked a basic rfi token, i have done a mistake by sending it a huge chunk of the tokens. Now i want bnb out of that contract asap !

    $595 (Avg Bid)
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    22 bids
    Seamless dev 6 days left
    VERIFIED

    What we require. Someone that is confident in doing all types of developing including -a trending sections on our dex -updating our dex to match current website -do ongoing work of adding pools farms and other parts to our dex -create a launchpad -help make app -help make exchange -you also get a say in all decisions in all areas of the token. In short you will be a owner of the token if everything goes well and what ever you do will help Benefit the token. You can still work on other projects but seamless is our project you being part of it. The current offer which is up to negotiation is -6% of all income (excluding farms and pools that is all marketing) will go to your personal wallet once a week. -a signing bonus of $1,500 busd - 3.5m seamless tokens with the ath around $52k usd W...

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    Hi I need need a Blockchain Live pair site, if any token's deployed then its will show in my site with full details including live chart. For example you can check

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    Looking for a freelancer to developer a Smart Contract on ERC20. Background: Welcome to Clash Cards Champions! Our goal is to provide our users with the best trading card experience using NFTs and Play2Earn. The cards are based on the Moonriver blockchain and can be collected as NFTs (Non-Fungible Tokens). The cards have various degrees of unique designs and attractive images, which lead to powerful in-game combat attributes and high-value collectibles. Users can trade them freely on the NFT market, thanks to the true digital ownership promoted by blockchain games.

    $283 - $850
    Sealed NDA
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    20 bids

    Build a cross-chain platform leveraging BSC and AI running on Web3.0

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    smart contract erc 721 5 days left
    VERIFIED

    I need to write a contract erc 721

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    The card game I need is called WAR whoever has the high card wins. It needs to be compatible with phantom wallet.

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    I'm looking for someone who can teach me charting and TA. I've been studying a lot and understand a lot of things including Fibonacci retracements but I want someone knowledgable to talk about it so I can hone my skills. This is what I want to know for what I believe will be a 1-2 hour project. 1. How long do you need to walk me through these (it would be me showing you some stuff and you checking on my skills and pointing errors and then teaching) 2. How much do you want to charge (I'm a beginner and not a millionaire so I hope you will be fair) 3. What is the method you are planning to use?

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    We are seeking an experienced Rust Developer to create Smart Contracts for the Solana Ecosystem. The right candidate must be proficient in Rust and have one or multiple live smart contracts they can provide as proof of their work. We have a huge number of projects available for ongoing work throughout 2022 and beyond. If you also have experience with Solidity this is a bonus and we will take this into consideration during the hiring process. When applying for this role, please provide links to the live Smart Contracts you've developed on Solana. We have work available immediately and will be fast-tracking the process, so please apply quickly and make yourself available for an interview.

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    An NFT project that requires a lot of the Nitty gritty work that we as a team can do, however are not capable of learning in the time frame we have available. Outsourcing this sort of work, and working along side you will definitely be central to getting this project out in a effective and timely manner. Thank you

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    Looking for someone to create a bot that detects when new liquidity is added to an AMM (automated market maker) pool on PancakeSwap & Uniswap. The bot allows me to buy any newly added token from PancakeSwap and Uniswap in amazing speeds (up to zero seconds from the time of the listing). It is called "sniping". The bot works by: Connecting to the blockchain network, scanning for all mempool / pending transactions, finding and matching the liquidity add transaction of the token you are trying to snipe and then placing the buy order in the same block. Speed is important… MUST be fast! The BOT would essentially: - Scan the blockchain and find transactions based on certain criteria (pending on the block aka mempool). - Front-run (specific trade volumes, slippage and g...

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    1. Anyswap Integration we need to submit our BSC contract (destination chain contract) to use the Anyswap router option Using Anyswap No token burn, the bringing process is simple, lock token X on chain A ( source chain) from mint inherited token X on chain B. When bridge back from chain B from chain A , inherited token X on chain Bburn trigger release token X on chain A. Company BEP-20 address to make contract owner and where to send tokens: 0xcD9136A5fE06f2A805A505c812900d202551Feb9 2. Integrate LEDU Anyswap bridge into our staking website This is a simple reactjs app which supports wordpress. We will use it for the frontend for users to interface with the bridge and staking The page is hosted on our AWS Cloud. (we have an AWS engineer inhouse that can he...

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    We have a set of blockchain tasks to do. Our engineering lead has broken them down into smaller tasks (about 12 tasks) The first task is a simple blockchain task for an experienced blockchain engineer. Existing libraries/frameworks should be used. No need to re-invent the wheel. Task is to review the ERC20 smart contract and create a BEP-20 contract with similar features and add Staking capabilities. Total supply: use same number as for the ERC-20 0xc741f06082aa47f93729070ad0dd95e223bda091 Main code repo to use for work: All code is to be pushed to this repo for Audit by our team Company BEP-20 address to make contract owner and where to send tokens: 0xcD9136A5fE06f2A805A505c812900d202551Feb9 After the minting, close the contract completely. It should be publicly visible that the ...

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    Hello, I want to create a 2d NFT game on a website for blockchain. I have a token already and I want the game to build it on Binance smart chain. Please see the attachments i have below to understand the scope of work

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    NFT and Blockchain 5 days left
    VERIFIED

    Need to build a platform in the metaverse based on nft and blockchain with ERC1155

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    We are looking for a ninja developer to develop a decentralized Cardano based NFT marketplace (webapp and mobile app) with on site minting option and some other features. You must know how Cardano works, have great experience with NFTs, smart contracts, minting and gas fees and experience with Haskell. Great web and mobile development skills, full stack development. If you never worked with Cardano before, please don't bid. Please add reference to recent Cardano based work you have done. more details will be given to the right candidate. Sorry - no candidates from India, Pakistan and Bangladesh. Auto bids will not be considered. please type "I am not from India, Pakistan or Bangladesh"" at the beginning of your bid. Please tell us about your experience with Cardano.

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    Build smart contract for nft 5 days left
    VERIFIED

    Need a web3/blockchain developer for nft smart contract. Also someone who has dealt with decentraland.

    $589 (Avg Bid)
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    61 bids

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