Blockchain, is a technology that encompasses digital records or information, referred to as “blocks”, that are linked together securely and share the same network. This distributed ledger technology is the backbone of a new wave of innovation being implemented into our lives, with new disruptive applications and solutions seen in a growing number of industries. Clients may hire a Blockchain Developer to harness this power and build a secure digital platform tailored to their business needs.
A Blockchain Developer can create unique solutions leveraging blockchain technology to securely store, access, mine and distribute data in an efficient manner. They can leverage features such as blockchain tokens for payments, smart contracts for automated transactions, privacy layers and data protection techniques. Additionally, the expertise of a Blockchain Developer will ensure the project complies with industry standards, ensuring secure data and validation.
Here's some projects that our expert Blockchain Developer made real:
- Creation of custom applications for fast and secure NFT (Non-Fungible Token) transactions
- Developments of tools that allow synchronization with physical products using Bluetooth protocol
- Integrations between wallets hosting cryptographic assets with ecommerce providers
- The establishment of exploratory networks to provide insights into decentralized ecosystems
- Developments to foster the growth of peer-to-peer energy trading networks
At Freelancer.com customers have posted amazing projects covering a variety of use cases related to blockchain utilising the Freelancer verified experts. With help from professionals on Freelancer.com customers can create unique projects addressing their business needs with safety, security and legality in mind. Rock your blockchain project today and hire an expert Blockchain Developer on Freelancer.com now!Dari 71,212 ulasan, klien menilai Blockchain Developers kami 4.81 dari 5 bintang.
Rekrut Blockchain Developers
Hola! Necesito una persona o un equipo disponible para diseñar un Smart Contract, que funcione en la red de Ethereum (ERC - 20, Solidity, Web3). Debe ser una persona con experiencia trabajando con este tipo de lenguajes y creación de este tipo de contratos inteligentes. Hi! I need a person or a team available to design a Smart Contract, running on Ethereum network (ERC - 20, Solidity, Web3). Must be a person with experience working with this kind of languages and creation of this kind of smart contracts.
I am looking for an experienced developer to help me build a slot game using Chainlink’s Verifiable Randomness Function (VRF). Requiered Knowledge: Solidity, Smart Contracts, React, Chaink link VRF,
Help us build an open world game similar to Big Time
An unskilled dev sent me a source code that works except for the remove liquidity part. I'm looking for someone competent enough to solve this issue for me and help me host the dex.
Hi there, I am looking for someone with the following skill: - Near blockchain - Smart contract development (near blockchain) - Nodejs - Reactjs or similar DM me for more information Thanks Fed
I'm looking for an experienced individual to audit a smart contract built on the Ethereum blockchain. The audit must include both a security assessment as well as a functionality review. I already have existing documentation that will be provided to the auditing contractor. This project requires somebody with a broad knowledge of blockchain technology and practical experience in Ethereum smart contract development. If you fit these criteria, please apply with confidence!
Looking for anyone who can help setup Validator Nodes on multiple Blockchain Testnets. Ping me if you know what you are doing. VPS setup preferred.
I am looking to hire a freelancer to develop a small project involving MetaMask integration. The project requires expertise in smart contract development and I'm open to any programming languages. With my limited knowledge, I need someone experienced and reliable to help me complete the project to a high standard.
The code to rewrite is here: Please show us your github profile (or similar) while applying to let us evaluate your understanding of blockchain.
We need a marketplace multichain oriented for a niche type. dot names
We want to create an NFT that serves as both a utility and governance token, facilitating payments and transfers within our platform. The primary function of the NFT is to represent unique, non-fungible assets, such as digital art pieces or collectibles. In addition to the NFT, we want to create a token that serves as both a utility and governance token. This token will facilitate payments and transfers within our platform, and NFT holders will receive this token as one of the benefits of holding the NFT. We plan to use the Binance Smart Chain (BSC). I will also need help with the Tokenmics.
experienced developer to connect ETHEREUM / GETH NODE to my PC
experienced developer to connect ETHEREUM / GETH NODE to my PC
i have a wordpress wcfm crypto market place that host wallets via express.js. im looking for someone knowledgeable that can show me an in-site or 3rd party payment processing that will allow users to purchase crypto for their hosted wallets that will also pay my site a 1.75% commission when it is purchased. so far everyone is telling me i need to keep a hot wallet with hundreds of thousands of crypto in it, i dont want this method. i need someone who can tell me a better way. i will have clients that wants to purchase $500-$10,000 at a time. process: 1) user join site 2) wallets are auto created 3) in their dashboard there is already a buy link 4)user click buy, chooses the crypto, type in amount and click purchase 5) this can be a popup or take them to third party site ( i dont care)...
I want to a simple and secure project that have function. 1. Tron Auto withdrawal and request From tron link or tronweb type. 2. all transactions are showing in tronscan by searching Company name. i have permanent work for good devlopers.
Hello. We have a long term project which it apart from many stages. We are looking for freelancer who will corporate with us and start working on first part of project. If the corporation goes well, we will continue with the same freelancer for second part. For now, we are looking for creating a trading betting competition (simple way) - staking (we will give logic) - and token (we will give tokenomics) - wallet implementations (MetaMask -Coinbase - trust Wallet) Saying that means we need smart contract where will provide the above services and Admin panel. Also we require a design where we will add all the services, even those are upcoming. Looking to hear from you soon. Please pay attention to the budget and bit only if you agree, according to requirements.
Desarrollaremos una aplicación móvil tanto para Android como IOS: La cual debe tener una interfaz de usuario agradable y llamativa pero a la vez sencilla y fácil de usar teniendo en cuenta que debe poder procesar múltiples partidas y registro de datos al mismo tiempo para que cuando muchas personas ingresen no sé paralice o se caiga o se desconecten las partidas. La operación de la plataforma consistirá en lo siguiente: Debe permitir registrarse esto podría ser con Google, facebook o en caso de que no sea complejo un formulario. Debe poder permitir vincular una Wallet en la cual los usuarios podrán depositar Criptomonedas en este caso USDT es por ello que se deberá usar la Blockchain de Tron, también debemos d...
I am looking for a freelancer to help me in adding my coin to Yiimp pool. I already tried bur faced some error that needs to be resolved.
hello I have a digital currency and I want to distribute it to users through a mobile application ,See the image below I want to distribute coins to users automatically ,By linking the currency wallet to the mobile application and distribute it to users Can you do this work
La Idea es partir de este ejemplo como prototipo El funcionamiento sería el siguiente: Los usuarios se registrarían en el sitio Web Una vez registrados podrán realizar depósitos en este caso a una wallet de la plataforma y se les acreditaría el saldo virtual en la web, con este saldo podrían ir entonces y escoger un juego y de acuerdo al costo de la entrada poder iniciar una partida, dónde el sistema los emparejara con otros jugadores que estén deseando iniciar una partida. Una vez obtengan un beneficio podrían hacer solicitudes de retiros. Los depósitos podrían ser en cualquier criptomoneda ejemplo BTC, ETH u otro pero la misma web debería dar la opción de convertirse en USDT para poder refl...
Just need to post to blockchain like WordProof Timestamp or WPSmartContracts but would need a custom solution. possible continues future profits. need to sign an NDA contract for a meeting!
Rebase token daap like titano Rebase toekn Fixed apy 365% daily 1% compound intrest Rebase frequency 86400 sec or 1 day Lottery module
Looking for an experienced developer to help build an off chain , decentralised, transparent, and secure price feed for decentralized synthetic exchanges using Gun, the distributed graph database library. The project will involve creating a curated list of API providers deemed trustworthy and reliable by the community, with each node on the network connecting to only one provider from the list. A consensus mechanism will also need to be implemented to allow the community to vote on adding or removing providers from the list. Gun's graph database functionality will be used to store and manage the pricing data received from each API provider, allowing for easy querying and retrieval of data by the Chainlink nodes. To ensure off - chain security and validity, Zero-Knowledge (ZK) proo...
Must have prior experience with DAO, token economics. DAO will track an underlying assets (NFTs), deploy capital to acquire crypto assets and liquidate asset as per demand and supply of token. Need the economist to formulate the structure of the DAO. Please reply by saying DAODAO!! so I know you have gone through my posting. And then tell me more about your prior experience on being a token economist, the project you had involved in.
Hello all. We are looking from Blockchain Engineer with experience in smart contracts with logic, and experience in development software. More details and flowchart of project we can provide in detail through call. Duration of Development = 50-75 days
I am looking for a freelancer to develop a crypto coins exchange that supports Bitcoin. I do not need a wallet system for storing coins and will not require a web-based user interface for exchanging coins. The project should support transactions involving Bitcoin, and no other coins. Any other additional features should consult with me before implementing.
Need help to add just one sha256 coin to yiimp pool. I already tried it my self and it gives some errors. wallet BfCZgZ9RLgtubHYyj1yVBEKGgA4D2soci8 is not mine. ERROR: rpc_do_call: 404 ERROR getaccountaddress [coin-name]
We need to use the ENS (Etherim Name Server) API ( ) in our java application. Project requirements - Send request and get responses from ENS API for .ETH domains: I - Register new .eth domains using ENS API, our .wallet metamask - We need to register eth domains using our java application. In our java application will be the our metamask key wallet and the password. II - Other Requeriments: a)Check if a .ETH domain is available for registration and List .ETH domains owned by all users. b) Obtain information about active domains belonging to any user. Example: c) Modify settings of our domains. Example: change controller, dns etc. d) Transfer our domains to other wallets. e) Instructions on how to create an ENS API account and obtain the API key - We need to have access to the E...
Stack: Flutter Knowledge: Dart, Blockchain Budget: $450. Payment in 3installments. Duration: 21days + 7days testing Task: Fix all issues in the app and make it perfect for transactions and upload to Play Store and App Store. Here is the task sheet:
I need 100+ valid infura api keys. Simply delivered in a text file. Simple job. Simply need the required information.
Fully decentralized File immutability Competitive free plan Autonomous
Im building a small exchange like where users can exchange crypto fast and with no KYC. When a user send crypto to the deposit adress, they have to get notification that the crypto they have sent is confirmed on teh network. I will have like 50 different coins in total. USDT, BTC, ETH, SOLANA, ADA, FTM, and so. Probobly the most popular ones. Total users per day will be very low at the beginning, probobly like 1-10 users a day.
NEEDED FOR IMMEDIATE START, DO NOT SEND YOUR BID REQUEST IF YOU ARE NOT GOING TO RESPOND TO MESSAGES INSTANTLY. Basic Overview: MyBB 1.8.3 forum plugin that gives the forum/community the ability to trade via an automated escrow system using Bitcoin. The plugin should not rely on any 3rd party payment gateways. It should give an option in the MyBB Admin control panel to customise certain functions of the escrow such as; Escrow Fee (the percentage that is added on-top of the transaction) If a buyer or seller is making a transaction for $100 in BTC and our current fee is set to 10% then there should be 3 scenarios. Scenario 1) The creator of the trade chooses an option that the Buyer will pay the fee. This adds the 10% on-top of the BTC payment. Scenario 2) The creator of the trade chooses...
There's an open project at: I need someone to integrate more features like map, admin dashboard, and rider/driver registration page.
I have a samll exchange like sideshift.ai. When a user sends crypto to the deposit adress , i need the user to get a notification/message when the crypto is accepted by the network.
Hi freelancers I’m looking for btc flashin,g software which will generate the coins without any network fees. The coins will be trad,able, splittable and transferable
Project Title: React Web3 Dapp Development Project Description: We are seeking a skilled freelancer to develop a React Web3 Dapp into an existing React template we have () that will allow us to accept crypto payments for documents that we are selling. The Dapp will need to integrate WalletConnect on the BSC network and support payments in BUSD, USDC, DAI, or BNB. The Dapp will also need to perform POST calls to our backend when is required and display the result on the frontend according our needs. Scope of Work: Web3 Connectivity: The freelancer will create and integrate Web3 connectivity using WalletConnect (Web3Modal 2.2.1 with wagmi) on the BSC network on an existing React template. Crypto Payment: The freelancer will add support for crypto payments in BUSD, USDC, DAI, or BNB and det...
I want just to verify my token on bscscan i have this error (Unable to generate Contact ByteCode and ABI)
Project is based on Blockchain , you just have to create the Frontend and connect it with Backend
I'm planning to build a simple decentralized rideshare Dapp that links riders and drivers, such that rides could be booked. It'll be based on blockchain and uses smart contract.
We are looking for Ethereum and web3 experts to make our Web3 project a success. Our team already includes talented designers and front-end developers, and all the groundwork has been finished to start our project. Following the launch of the NFT mining site, we plan to launch several related websites such as games, airdrops, NFT marketplaces, and DEX. Review project plans and explore possibilities. Our projects are both urgent and long-term, so we need the fastest experts. At first please check our project to get all information and roadmap, check the implementation or possibility, then contact me. A quick and complete implementation will increase your chances of being hired. At first I recommend you to check the project. Please explain to me about errors that occurs at the first on the...
El proyecto Comunidad Tokenizada basada en Blockchain busca crear un ecosistema digital en el cual los miembros de una comunidad sean recompensados con tokens por realizar diversas tareas y contribuciones. Este ecosistema se basa en una plataforma blockchain que garantiza la seguridad, la transparencia y la descentralización de las interacciones entre los participantes. El objetivo principal es fomentar la participación activa y el compromiso de los miembros de la comunidad, permitiéndoles acumular tokens como una representación de su influencia y esfuerzo. Estos tokens podrán ser utilizados para ejercer mayor poder en la toma de decisiones dentro de la comunidad, así como para acceder a beneficios y oportunidades exclusivas. Las reglas y estruct...
I am in need of an experienced Smart Contract developer who can help me bring my project up to speed. The technology I'm using is Ethereum, and I have a rough idea of the project, though I need assistance to bring it to fruition. Additionally, this project requires the contract to be written in the Solidity programming language. To ensure success, the developer must possess expert level knowledge and experience with smart contracts, specifically Ethereum and Solidity. Furthermore, they must have the technical know-how and communication abilities to work independently and follow detailed instructions. Only experienced and qualified individuals should apply. I am looking forward to working together to achieve a common goal. If you have the skills and expertise, please do not hesitat...
I'm looking for a developer to create an engaging and immersive blockchain-integrated porker game -play according to current poker rules, number of players is 8 or 6. Players can create their own table and invite friends to play together for fun The game should be designed from the ground up and feature an entirely new and distinctive look. As the game will run on the blockchain, it must be secure, with all data stored on the chain. The game should feature elements of both chance and strategy. Finally, I am seeking a developer experienced in creating gaming experiences who can bring all the elements together into one cohesive, entertaining game.
Please create a crypto trading bot based on ethereum Blockchain with different contracts addresses that I could enter (Metamask, uniswap pool essentially). I would like to have it as a as a chrome Extension or it can be React (front end)/ nodejs) Back end) app, or any other solution that gets the job done for a reasonable cost. I would like to work with a developer who has experience building a bot like this and can provide previous projects as proof of your ability to execute this in a high-quality fashion. It should operate smoothly and enable transaction to run quickly once the desired strategy is selected. The BOT would essentially include: A simple UI for the bot where I can manage parameters such as: the amount of the trade, slippage tolerance (on or off) , range or amount t...
I currently have a Songbird Node which we can use for it. I need to just update it automatically with a cronjob