Blockchain Jobs

Project Goal Build a mobile-first digital payments app that allows users to send, store, convert, and spend crypto-backed USD with extreme simplicity, comparable to Zelle or Venmo — while crypto remains largely invisible to the user. Core Principle: “It should feel like a normal money app, powered by crypto in the background.” ⸻ Target Platforms • iOS • Android • Backend server • Admin dashboard (web) ⸻ Core MVP Functionality 1. User Authentication Required: • Phone number signup • SMS verification • Optional email backup • PIN or Face ID login • Secure session management System must: • Prevent duplicate accounts • Securely encrypt user credentials ⸻ 2. Automatic Wallet Creation Upon signup, the...

URGENT: Payment will be done later with a separate contract to make the payment after the job is done due to a funding problem and will be paid through this platform, the freelancers you will hire will be paid in crypto. We need a TA Generalist with main talent for acquisition, you need to identify who we need and also why by spotting the best talent for a Memecoin Project Web3 project. We wanna be successful I would consider 10m market cap a success if not higher, we need to launch to market in the shortest time possible. You should have knowledge DeFi ecosystem and HR tools like LinkedIn Recruiter.

I want to demonstrate provable data consistency across a geographically distributed Hyperledger Fabric network by persisting the blockchain ledger in CockroachDB instead of the default back-end. The work centres on two Fabric layers: chaincode and the ledger itself. Chaincode reads and writes must be routed so that every block committed by a peer is durably stored in CockroachDB, and peers must replay that data with no divergence even under node failure or network partitions. The scope includes mapping Fabric’s block and state data structures to a CockroachDB schema, wiring the peer so that commit and endorsement steps call the database seamlessly, and validating the design with a small multi-region testnet. CockroachDB will act strictly as the ledger store; MSP and other services r...

I am developing an end-to-end platform that pulls live claim-related data from Revit models, runs it through a FIDIC rules engine, and then immutably stores and certifies every step on Hyperledger Fabric. The objective is clear: the moment a potential claim is flagged in the BIM environment, it should be automatically registered, classified, validated against the relevant FIDIC clauses, and published to an auditable ledger—with a web dashboard showing the entire trail in real time. Scope of work • BIM connector: a service that extracts the necessary objects, properties, and metadata directly from Revit (IFC compatibility is a plus) and hands them to the API. • Integration backend (API): a lightweight, well-documented REST/GraphQL layer focused on automated workflows&md...

I’m working with BitcoinPHP and I need a concise, well-commented snippet (or small class) that can derive and export a fully valid Bech32 (native SegWit) address from a given public key or HD-path.

I have a new Web3 idea ready to move from concept to code and I’m seeking an experienced blockchain developer to guide and build the entire solution with me. Because the project is still early-stage, I’m open on the specific chain, tech stack, and even the exact feature set—we’ll define those details together during an initial discovery call. What I do know is that the end product will rely on smart contracts, a dApp front end, and secure wallet interaction, so familiarity with Solidity or similar contract languages, , and modern front-end frameworks is essential. Here’s how I’d like to structure our collaboration: – First, a short technical workshop where you assess my concept, recommend an appropriate blockchain (Ethereum, BSC, Polkadot, or ...

I have an existing React app and need the key pieces of the Polymarket privy-safe-builder example wired straight in. The focus is on two things: • User authentication & management – replicate the Privy-powered flow so users can sign up with email or social, link a wallet, and stay logged-in across sessions inside my project. • Smart-contract interaction – expose the same Safe-based contract calls shown in the repo (read, write, signature gathering, error handling), but adapted to the contracts my dApp already references. The codebase you’ll be grafting onto is a standard Vite + React setup with already in place. I’ll add you to the Git repository once we start; you can work in a feature branch and open a pull request when complete. Acceptance crite...

i'm looking for someone who ill help me setup my telegram group for a crypto project and also. discord

Pryzen Messaging & Agent System Pryzen features a unified messaging system designed to combine real-time social interaction with a wallet-native intelligent agent, purpose-built for Web3 sports betting and prediction markets. The system delivers a familiar chat experience inside the app while enabling secure, decentralized communication tied directly to users’ wallets. Core Principles Single chat experience for users Social + system messages in one interface Wallet-based identity, not phone numbers or emails Secure, end-to-end encrypted communication Scalable and future-proof for AI agents How It Works Users authenticate with Pryzen and automatically receive a Web3 wallet managed by Privy. This wallet becomes the user’s identity for messaging, notifications, and a...

I’m creating a virtual coin on the Tron blockchain and need a complete, production-ready solution. The core token must follow the TRC-20 standard so users can send and receive it as easily as any other TRX-based asset. Beyond basic transactions, the coin will reward long-term holders through an on-chain staking mechanism that automatically calculates and distributes rewards. To make adoption painless, I also want a clean, responsive web interface. Holders should be able to connect with common wallets such as TronLink, view balances, start or stop staking, and track their accrued rewards in real time. Deliverables I’m expecting: • Audited TRC-20 smart contract with integrated staking logic • Front-end web dashboard (React or similar) that connects via TronWeb ...

Need to develop a software dm to more details Need either software or working app or working site. Works in block chain

I need someone to audit my token code I created with OpenZeppelin and AI? I implemented taxes and max wallet but I don't see taxes into my taxes wallets. I need someone to audit and maybe fix the issues and explain it. It is one hour of work I guess.

I need help setting up my newly purchased Bitcoin miner to work with public pool mining and connect to my Bitcoin Core node. Ideal skills and experience: - Experience with Bitcoin mining - Familiarity with public mining - Knowledge of Bitcoin Core setup and configuration - Technical troubleshooting skills

I want to launch a simple USDT Stable Coin and I want it live on any of the three major networks: BEP20 (Binance Smart Chain), ERC20 (Ethereum), and TRC20 (Tron). The token only needs the core Tether behaviour—holders must be able to transfer tokens and see their main & asset balance with standard calls, original Logo. If you already have experience shipping tokens on any of these networks and can complete the third quickly, let me know—speed and reliability matter more than extra features.

I need a complete, student-facing web application that lets users prove the authenticity of their academic certificates through blockchain hashing. The flow is straightforward: a student signs up, uploads a certificate, and immediately receives an on-chain validation record that anyone can later cross-check online. I have half work done and pages are created Core functionality • Secure user registration and login with email or social auth • Certificate upload, automatic hashing, and immutably storing the hash on a blockchain network (Ethereum or any suitable L2 you recommend) • Instant on-screen validation result plus a shareable verification link • Admin dashboard where I can review submissions, view analytics, and revoke or re-issue hashes when needed Tech...

I’m preparing to launch a brand-new BEP-20 asset on the BNB Smart Chain that mirrors the technical discipline of USDT while remaining an entirely separate token. Here’s what I need from you: • A clean, audited-style smart contract written in Solidity that compiles under the latest stable version, adheres strictly to the BEP-20 interface, and defaults to 18 decimals. • Flexible placeholders for the name, symbol and total supply; I will confirm those values right before deployment. • Owner-controlled mint and burn functions so I can expand or contract supply as required. • A blacklist / whitelist mechanism to freeze or allow specific addresses when necessary. (Transfer-pause logic is nice to have, so feel free to wire it in behind a boolean flag, but ...

ON-CHAIN MATRIX SYSTEM — UPDATED REQUIREMENTS 1) GENERAL - The system is 100% on-chain, immutable, and permissionless. - Users register once and activate slots sequentially (Slot 1 → Slot 15). - Each slot has a fixed activation price (as defined). - All accounting and payouts are done in the platform token. 2) SLOT STRUCTURE (GLOBAL TREE) - Each slot has ONE global binary tree. - The tree grows indefinitely (no fixed depth, no fixed level count). - Every activation or rebirth for that slot adds a new node to that slot’s global tree. - Placement order is deterministic BFS: top-to-bottom, left-to-right. - Each node has at most 2 children. - Each user can appear multiple times in the same slot tree due to repeat cycles (rebirths). 3) MATRIX CYCLE (30 POSITIONS PER CYCLE) - ...

I need someone experienced with OpenZeppelin and Taxes? The task is to add Taxes and Anti Whale functionality and create my BEP-20 token. I need something simple and working. Please apply only if you can show some tokens portfolio with at least 2 OpenZeppelin contracts.

I want to represent my physical gold holdings on the Binance Smart Chain by issuing a BEP-721 token. The contract must fully comply with the BEP-721 standard so wallets and marketplaces on BSC recognize it, yet go beyond the basics by including three essential capabilities: easy transferability, an on-chain dividend-distribution function that lets me send BNB or BUSD to current holders, and a burn mechanism I alone can trigger when underlying gold is redeemed. Please write clean, well-commented Solidity, test it thoroughly with Hardhat or Truffle, and deploy first to the BSC testnet; after I confirm everything works, walk me through the mainnet deployment. Deliverables 1. Auditable BEP-721 Solidity contract with transferability, dividend payments, and burn controls implemented. 2. Un...

I need a complete, student-facing web application that lets users prove the authenticity of their academic certificates through blockchain hashing. The flow is straightforward: a student signs up, uploads a certificate, and immediately receives an on-chain validation record that anyone can later cross-check online. I have half work done and pages are created Core functionality • Secure user registration and login with email or social auth • Certificate upload, automatic hashing, and immutably storing the hash on a blockchain network (Ethereum or any suitable L2 you recommend) • Instant on-screen validation result plus a shareable verification link • Admin dashboard where I can review submissions, view analytics, and revoke or re-issue hashes when needed Tech...

Je souhaite lancer un stablecoin entièrement adossé à une devise, émis et géré sur la blockchain Solana. Votre mission couvre tout le cycle de vie technique : • Concevoir et coder le programme SPL Token qui garantit le peg 1:1, y compris les fonctions de mint/burn et les garde-fous nécessaires. • Mettre en place la logique de gestion des réserves (oracle de prix, comptes de collatéral, contrôles de transparence). • Déployer et tester le contrat sur devnet puis mainnet, avec scripts automatisés. • Fournir une documentation claire et un guide d’intégration pour portefeuilles et plateformes d’échange. • Anticiper les bonnes pratiques de sécur...

Building a transparency-first supply-chain network on Hyperledger Fabric. The network must capture every inventory hand-off, trigger smart-contract events automatically, and keep supplier credentials verifiable at any moment. The work centers on: • Configuring a permissioned Fabric network (ordering service, peers, CAs). • Writing chaincode that covers inventory tracking logic, granular smart-contract rules, and supplier verification workflows. • Issuing “blockpassports” as on-chain NFTs so each batch or asset carries a tamper-proof identity that follows it through the chain. • Exposing REST or gRPC endpoints so my existing ERP can push and pull data without friction. • Packaging the setup (docker compose / Kubernetes scripts and concise READ...

We’re looking for a technically strong DeFi specialist to work with advanced, short-duration liquidity strategies involving major stable assets. This role focuses on atomic, transaction-level execution—designing and operating systems that temporarily access deep liquidity, perform precise on-chain operations (such as swaps, rebalancing, or liquidations), and settle everything within a single block. No long-term custody, no idle capital exposure. Ideal candidates understand: • How liquidity works at the protocol level • ERC-20 mechanics, approvals, and balance safety • DEX routing, slippage control, and execution guarantees • Risk-aware, fail-safe transaction design This is a fast-moving environment suited for engineers who enjoy high-precision problem...

Hi, I’m building a blockchain/Web3 project and I’m looking for a skilled blockchain developer who can help design and build the project using blockchain technology and Web3. I’d love to connect and explore a potential collaboration. Please let me know if you’re interested.

I need someone who can walk me through the complete cycle of moving funds from my Indian bank account into USDT and then back out to INR whenever I choose. I am comfortable handling basic online transactions, but I want clear, real-time guidance so I don’t lose money to hidden fees or run into compliance issues. Scope of work • Recommend a reputable exchange that supports INR deposits and USDT withdrawals to Indian banks or UPI. I’m open to options such as Binance, Coinbase, Kraken or any other service you trust that meets current Indian regulations. • Assist with each step: creating or configuring the exchange account, finishing KYC/verification, securing a USDT-compatible wallet if needed, funding the account with INR, purchasing USDT, and later liquidating it ...

I am seeking an experienced developer to build a high-speed trading bot for Kalshi. The ideal candidate should have hands-on experience with the Kalshi API, limit order execution, and automation of trades through Telegram or other platforms. Responsibilities: • Develop a reliable and fast trading bot for Kalshi markets • Implement limit orders and aggressive order execution strategies • Integrate the bot with Telegram or other interfaces for instant trade execution • Optimize performance to reduce latency in order execution Requirements: • Proven experience with Kalshi trading bots or similar platforms • Strong knowledge of trading APIs and limit order handling • Proficient in Python, Node.js, or relevant programming languages • Ability to ...

use the tools API's and SDK's on to build an AI agent

My goal is to prove that 50 completely separate Indian embassies can collaboratively train a powerful intrusion-detection model without ever sharing raw traffic logs. Each embassy keeps its packets local, trains an IDS in Python, then ships only the updated weights to a permissioned blockchain that averages them and sends back the enhanced parameters. Key points I need turned into code: • Dual-framework training loops: the local agent must be able to switch between PyTorch and TensorFlow so each site runs whichever stack its engineers prefer. • Attack coverage baked into the dataset pipeline: the IDS must correctly classify Malware, Phishing, and DDoS patterns. Synthetic generation for edge cases is fine as long as the final validation shows clear detection rates for all three...

I'm looking for an experienced blockchain developer to create a smart contract on the Binance Smart Chain for a decentralized value proposition (DVP) platform. Essential requirements include: - Automated settlements - Asset transfer Ideal skills and experience: - Proficiency in BSC - Strong smart contract development skills - Experience with automated settlement mechanisms and asset transfer functionalities Please provide relevant past project experience and a timeline for completion.