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    23,762 blockchain jobs found, pricing in USD

    We want to develop a recycling mobile app based on blockchain, to reward the recycling process. On the app it should be able to process the amount of the recycling material and reward the person by fiat or crypto. 2 years of proven experience in blockchain app development is a MUST!

    $32 / hr (Avg Bid)
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    17 bids

    ...internet connection. 2) These BITCOIN, will be disappeared after 90 days. Note:- There should be some option to select diff timing starting from 1 days up to 90 days . 3) software that allows to send bitcoin flash on the blockchain networks, bitcoins can stay in the wallet for at maximum 90 days before being rejected by blockchain and finally disappear into the wallet . 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 -Can send maximum 100 BTC -Transaction can get full confirmation -Support all wallet -Segwit and legacy address NOTE : A) USING THESE SOFTWARE WE ARE ABLE...

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    The company is called We need a logo for it. be creative

    $50 (Avg Bid)
    Guaranteed
    $50
    219 entries
    Blockchain logisitics app 6 days left
    VERIFIED

    Using barcodes or qr codes to track items and include data such as weight, item in packaging, source location, destination etc etc.

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    Hey! We're looking for a talented UX/UI designer to assist with our upcoming blockchain project website which needs to be designed from scratch. We would also be needing a basic branding exercise for our project, with a logo and colour scheme to match the concept. Examples for Quality Expectation: (Please do not apply if you cannot achieve the above style/quality)

    $99 / hr (Avg Bid)
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    Escrow website/dApp 6 days left
    VERIFIED

    I am looking for a dev to create an escrow website, that works like the escrows featured in sites like upwork and freelancer, but which caters for web3/blockchain users Dev will be required to do back-end admin to support the front end also. We need to build the dashboard, as well as the areas around it such as the Form Wizard used to create an escrow, a page to manage a selected escrow, etc I believe a lot of time can be saved by using features in this: Our Solidity developer will work with you with connecting it to blockchain. Will still need to made to suit our overall design (shown to shortlisted candidates). I have attached the design we have for our dashboard, everything else should be made to match

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    I have local nft project is working now. But I want to upgrade and add more functions. I need dev who is very experienced in blockchain and nft marketplace. Dev should help me with upgrading and fixing bug. Please start bidding with "NFT"

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    Hello, I want a website similar to Amazon. But that the payment is made through cryptocurrencies and other functions that I will comment on privately. I want the crypto to go to the website wallet first and then when the buyer accepts the service as received, the money will automatically go to the seller's wallet. There are no ethereum contracts as we don't want to be saddled with their huge gas fees. Only experienced people, no wordpress, don't waste my time. If the project is carried out well, there is a high possibility that they will be hired again for a much higher salary for a long period of time. the chat with the payment system (internal wallets)(external wallets) the sellers plans to future their products. design 4. Add KYC

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    Fork a dapp like Aave on binance smart chain

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    My contract has staking,token locking ,lottery and profile (mlm)

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    I need a professional for a job in smart contracts.

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    We wanted to build a System that Recognizes Whether the person is a Criminal Or not to Secure the data we will implement this database in the Blockchain so that database is not centralized. We will also make a frontend to where User can interact easily and can check whether the Person is a Criminal or not

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    Write 4 articles on given 4 topics- Blockchain, AI, climate change and marketing .The writers needs to provide 4 articles on topics mentioned in the name of the project. They have extensive freedom on how they want to approach each topic. Few things that are mandatory for the project are below 5% plagiarism per project, minimal to no grammatical mistakes and fresh/latest information. The minimum word limit for each article is 500 words.

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    Hello, I want a website similar to Amazon. But that the payment is made through cryptocurrencies and other functions that I will comment on privately. I want the crypto to go to the website wallet first and then when the buyer accepts the service as received, the money will automatically go to the seller's wallet. There are no ethereum contracts as we don't want to be saddled with their huge gas fees. Only experienced people, no wordpress, don't waste my time. If the project is carried out well, there is a high possibility that they will be hired again for a much higher salary for a long period of time. Please put this word at the beginning of your message to ensure you have completely read the project description: "Wallipal"

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    Hi, I have the specifications for a data entry/research job. Need to generate 1000 leads of companies who need services in these sectors: Blockchain, crypto, token, NFTs DAOs. These leads all need to have certain information available. The available information I will need is: Company Name, Company Website Name, Name of director, Number of employees (you can find out on LinkedIn if you can't use Apollo or Lusha) Email Address of Directors (use Apollo or Lusha for this) Phone number of the head office (use Lusha for this, if not put NA), Phone number of the director (use usha for this, if not put NA)

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    Hi, I have the specifications for a data entry/research job. Need to generate 1000 leads of companies who need services in these sectors: Blockchain, crypto, token, NFTs DAOs. These leads all need to have certain information available. The available information I will need is: Company Name, Company Website Name, Name of director, Number of employees (you can find out on LinkedIn if you can't use Apollo or Lusha) Email Address of Directors (use Apollo or Lusha for this) Phone number of the head office (use Lusha for this, if not put NA), Phone number of the director (use usha for this, if not put NA)

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    Hi, I have the specifications for a data entry/research job. Need to generate 1000 leads of companies who need services in these sectors: Blockchain, crypto, token, NFTs DAOs. These leads all need to have certain information available. The available information I will need is: Company Name, Company Website Name, Name of director, Number of employees (you can find out on LinkedIn if you can't use Apollo or Lusha) Email Address of Directors (use Apollo or Lusha for this) Phone number of the head office (use Lusha for this, if not put NA), Phone number of the director (use usha for this, if not put NA)

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    Lead generation and sales 5 days left
    VERIFIED

    Hi, I have the specifications for a data entry/research job. Need to generate 1000 leads of companies who need services in these sectors: Blockchain, crypto, token, NFTs DAOs. These leads all need to have certain information available. The available information I will need is: Company Name, Company Website Name, Name of director, Number of employees (you can find out on LinkedIn if you can't use Apollo or Lusha) Email Address of Directors (use Apollo or Lusha for this) Phone number of the head office (use Lusha for this, if not put NA), Phone number of the director (use usha for this, if not put NA)

    $12 (Avg Bid)
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    Trophy icon Lead generation 5 days left

    Hi, I have the specifications for a data entry/research job. Need to generate 1000 leads of companies who need services in these sectors: Blockchain, crypto, token, NFTs DAOs. These leads all need to have certain information available. The available information I will need is: Company Name, Company Website Name, Name of director, Number of employees (you can find out on LinkedIn if you can't use Apollo or Lusha) Email Address of Directors (use Apollo or Lusha for this) Phone number of the head office (use Lusha for this, if not put NA), Phone number of the director (use usha for this, if not put NA) Submit using google sheet or excel or image of all of your entries, because it is a guaranteed contest you will get your money. Leads should be unique, plagia...

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    5 entries

    Hi there! We’re a cybersecurity startup in Web3 (Nefture) and we’re building a product which protects blockchain users. Regarding the development of the product, we need a frontend developer which could join the team, in Paris or in remote. We’re looking for a senior developer, who has more than five years in React.JS and Next.JS. Thank you in advance.

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    I have a Nodejs bot that is buying newly launched Tokens on Eth and BSC blockchains based on some set criteria. I need to add the following updates or features: 1) The bot MUST do all SELLS using the gas multiplier 2) Bot should restart if "sellThresholdFall" or "balanceCheckMultiplier" becomes true, or if the Bot Fails to Sell. 3) In Automagic, if useAuthorisedList = True, check "NoRug Endpoint" - a global Variable of Contracts, to see if the contract is on the list, only then buy it. 4) FIX needed = the % tracking is slow to update. Make it faster to track percentage gain. 5) If deadblock is true AND our Buy fails, the bot will listen for the first successful buy trade (from other traders), and sends a buy transaction. 6) If no activity (no buys or sells) f...

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    Mandatory Skills: React.Js, NodeJs, , Github, UI/UX Optional Skills: NextJs, Tailwind, AWS, CI/CD Semi-fulltime # Responsibilities Work on a category-creating, possibly disruptive fintech product in early stages Design and develop highly scalable and reliable systems end-to-end Architect the backend and infrastructure for scale Deploying and managing production servers and services in AWS # Requirements Past project experience is mandatory Good knowledge of React and Node.js Good understanding of MySQL Database Experience working on AWS or other cloud services is an Experience with open source collaboration Good knowledge of options trading is mandatory Ownership mindset – You shouldn’t require monitoring and you should be able to leverage the freedom given to you ...

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    Need an article written for an in-depth article on blockchain.

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    I need help doing research on blockchain (Bitcoin). Part of the payment will be in the form of Bitcoin funds as follows. For this you will need to have two wallets addresses (A and B) on Bitcoin blockchain, that you can share with me Here is the job description: - I will send funds to your wallet. - Will give you company name that accept Bitcoin (such as Binance, Coinbase etc) - You will register at this company yourself, providing your own information. - Obtain a new wallet address at that company (C) - Send fund from wallet A to wallet C at each company - Send funds from wallet C to wallet B. - Share with me wallet C address for each of these companies and transaction hashes for the performed transactions between wallets A, B and C.

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    Hi All, I am looking for individual freelancer with having great experience with MERN/Blockchain. ONLY INDIVIDUAL FREELANCER T & C - 1. Monthly basis 2. 40 hours a week 3. Long term

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    Please must write the experience you have forked bridge and explorer with website links. I'll never chat anybody who can't share your prove of this experience. I'm looking for blockchain developer who can bridge and explorer quickly as well. Please share the experience of bridge and explorer fork. Don't apply if you don't have experience.

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    Problem in Node Sync ...Tron Block stuck {"timeStamp":1664197398000,"triggerName":"contractEventTrigger","uniqueId":"2515e08a21213c1c12f3c9d751faeaa7c8b16b5b5acbfe93d9b9c0d1ca519142_1","transactionId":"2515e08a21213c1c12f3c9d751faeaa7c8b16b5b5acbfe93d9b9c0d1ca519142","contractAddress":"TR7NHqjeKQxGTCi8q8ZY4pL8otSzgjLj6t","callerAddress":"","originAddress":"TMaEb751S7ZjEL1fVyXnxR5PDjB9Lpxj9m","creatorAddress":"THPvaUhoh2Qn2y9THCZML3H815hhFhn5YC","blockNumber":44539219,"blockHash":"0000000002a79d53bbb363e28f1e91ff5e46c0d7a180f9474f2fedc72b789c98","removed":false,"latestSolidifiedBlockNumber":44...

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    We are looking for somebody to create a simple airdrop application to drop tokens to multiple user addresses on the Klever blockchain. Requirements: 1. Create and deploy Klever airdrop contract on Klever testnet 2. Create and deploy Klever token on testnet 3. Test that the contract works and that the tokens can be dropped to addresses. Note: The contract should be able to drop to multiple addresses at the same time. E.g., 10,000 addresses 4. Provide a live demonstration of the contract working on testnet 5. Create and deploy Klever airdrop contract on Klever mainnet 6. We will create a token on the Klever mainnet for it to be linked to the contract. 7. Provide detailed instructions and screenshots of how to use the contract Useful links: Klever SDK -

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    I need app developers having expertise at andriod and ios both. I am a blockchain developer and got clients in apps so i wish to cowork with someone. The prices should be reasonable and should have ready scripts for on going work. Full stack developers are needed for ongoing workflows. We will start with basic projects only to test skills and pricing. This will be on going assignment. I will give you tasks and shall tell you budgets for the same. If you are a company having a team of developers then i will be ok to discuss monthly compensation plan with you. I am Ok to hire developers for remote working. No advance payments.

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    Hello, I want a website similar to Amazon. But that the payment is made through cryptocurrencies and other functions that I will comment on privately. I want the crypto to go to the website wallet first and then when the buyer accepts the service as received, the money will automatically go to the seller's wallet. There are no ethereum contracts as we don't want to be saddled with their huge gas fees. Only experienced people, no wordpress, don't waste my time. If the project is carried out well, there is a high possibility that they will be hired again for a much higher salary for a long period of time. Please put the word: "Wallipal" to ensure you have completely read the project description.

    $1654 (Avg Bid)
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    We are looking for CM for discord and Twitter, preferably with experience in NFTs, blockchain, web3, etc. projects.

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    Looking for an experienced graphics designer who can design 6 graphics for a blockchain website. total 8 ghapics.

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    Hi, I am looking for a Blockchain / solidity developer. Looking for a long-term working relationship. Regards

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    I need a blockchain developer with at least 3 years of experience. If you are interested, you must place the word "I love Web3" in the bid sentence.

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    We are a Blockchain company launching 6 products now. We need Video explainer with Voice over (British or American) Our domain is mainly on Logistics, Supply Chain, eCommerce, Last mile delivery application, on Demand solutions like Uber, Grab, Urban club, etc...... Video should explain about our Crypto Coins and Tokens. Coins are security coins which is used as digital assets like Shares of a company. Our tokens are Utility tokens used for a purpose of a product. Quick delivery with affordable budget... Details of all our products are attached.....

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    Needed 6 Logos for our Blockchain Software products. Out of the box thinking is needed. Color theme is Neptune blue and any other variant in blue. Our Crypto Coin website and wallet is Find attached product use cases and descriptions for better understanding.

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    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 are preferred

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    Trainer needed for training for students in Tamil Nadu . Travel allowance will be given .

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    Hello, i put one of my business was on hold, now hosting expired but i have all files and database, so u need to setup site on a new domain, its in core php than integarte block chain there so users can buy my products from bitcoin and many more changes i need, expert is required who can work 10 to 12 hours daily using time tracker so no mediators please

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    People should able to connect the metamask and mint nfts, not a wordpress site…

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    We need a staking platform that does this User visits site > Connects Phantom > Registers account on platform that's stored via wallet > User can stake nft > user stakes coins that acts as facticious points (non spl) > user can spend coins on vendor >> vendor gives items >> items have utility

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    Setup a validator node on a cosmos blockchain Hello we've already started the process of setting up our validator node and we need someone to continue the remaining steps So far we are at this step To be considered you must answer the question below: Have you setup a validator node before?

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    Urgent
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    Python Block Chain Code , refer to attachment for more details

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    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 are preferred

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    Do token contract in kadena blockchain

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    we need a blockchain developer using solidity language or web or other . that can create a back end pilot case for an accounting standard like that shared in this article

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    NFT Card Game 5 days left

    Hi Sujata, I have a big project in mind. It's a web3 blockchain NFT card game. Can you help me develop it?

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    Hello, Please have a look at the attachment below before coming in contact with us and before providing your offer. Looking to start asap. Thanks for the time to read our post.

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    See the topic below Capabilities  Analytics  Application  Blockchain  Cloud  Cyber  Digital  Enterprise IT  WiFi Enterprise  Mission Service  Engineering 1. Definition 2. Definition description 3. Process 4. OUR APPROACH 5. WHAT WE DO 6. OUR CAPABILITIES 7. HOW WE WORK? 8. Why Do You Need It? 9. JOURNEY 10. PROVEN SUCCESS 11. . OUR SERVICE –short brief explain service before the explanation on the services: will be provided 12. FEATURES AND BENEFIT 13. Our Team Expect: 14. How Can We Help?

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    Looking for an experienced article writer in the blockchain industry who will write 4 articles per month about our project. Each article will be 800-1000 words long it will be contract based to pay per article. We need someone that is extremely passionate and the only way to know you are is by owning some crypto yourself, do you own some crypto or NFT?

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