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I need a complete installation and configuration of a private Hyperledger Besu network whose main job is reliable data storage and sharing. I have servers ready (cloud or on-prem) and want a clean, repeatable setup that lets me add nodes later and expose standard JSON-RPC and WebSocket endpoints. Scope of work • Install the latest stable Besu release on 3+ nodes (validator and non-validator) • Create a custom genesis file, bootnodes list, and network ID • Enable data-storage–focused consensus (IBFT or Clique—whichever you recommend for fast confirmation) • Configure basic account permissioning and privacy groups if they help our data-sharing use case • Expose HTTP & WS APIs with CORS and authentication where needed • Deploy a sampl...

I need a freelancer who have bitcointalk high rank users like Member, Hero or Legendary Need to post and promote my Crypto project with posting.

Research Focus: Improving Proof of Work (PoW) efficiency and cross-chain confidentiality via zk-SNARKs. The Groundfloor Opportunity: This project represents a unique opportunity to lead the research and implementation of ZK-SNARKs on a nascent PoW chain. We are aiming to achieve what Zcash did for privacy and what Bitcoin Cash sought for utility, but at a "Groundfloor" level on a Sovereign EVM. As a lead architect, you will not just be coding; you will be officially improving the Bitnet Money blockchain's privacy infrastructure, establishing a reference standard for trustless OTC exchange before the ecosystem scales. Introduction: Polygon proved that you could take the standard Ethereum Virtual Machine and wrap it in a zero-knowledge proof layer to achieve instruction-leve...

I run a custom PHP + MySQL website and need a fully self-hosted USDT (TRC20) deposit flow. Here is what the job entails: • Each user must receive an automatically generated, unique TRC20 wallet address. • A service written in the language of your choice should monitor those addresses—either through TronGrid or a locally synchronised Tron node—and detect confirmed USDT transfers in real time. • Once a transfer is confirmed, an SQL call must update the user’s available balance in my existing database tables. • The entire stack must remain under my control; please keep third-party payment gateways (CoinPayments, NowPayments, Plisio, etc.) out of the solution. • Apply standard encryption protocols for key storage, address generation, and an...

Please Note Before Proceeding Below: **This is a small initial project with a limited budget to evaluate the developer’s understanding and quality of work. Once all tasks are completed to our standards, the developer will be hired full-time and considered for larger projects ranging from $5,000 to $25,000, depending on the role and scope.** We are looking for an experienced Solana blockchain developer with strong AWS server infrastructure expertise to help diagnose, fix, and optimize production-level code issues. This is not a beginner role. You must have hands-on experience with Solana programs, RPC interactions, and backend deployment inside AWS environments. You will be working on live Solana-based systems that require debugging, performance optimization, and infrastructure-le...

URGENT: Contract will be done outside the platform 50% after funding presales 50% after launch and will be paid through this platform, the freelancers you will hire will be paid in crypto and fiat. 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 and other tools like DocuSign to make onboarding contracts. Access to AI tools also will be valued highly.

我们需要开发一个支持多种套利策略的加密货币套利交易系统，具体要求如下： 1) 目标 构建一个多交易所加密货币套利交易系统，该系统： • 通过 API 连接多个交易所 • 监控实时价格差异 • 支持多种套利策略 • 提供实时筛选器仪表板 • 支持手动执行以及未来的自动执行 ⸻ 2) 支持的交易所（基于 API） 初始交易所： • Binance • Kraken • Bybit • OKX • Bitget 系统必须采用模块化设计，以便轻松添加新的交易所。 ⸻ 3) 支持的套利策略（核心引擎）系统必须支持：⸻ A) 跨交易所套利 现货-现货 在交易所 A 买入（较低价格） 在交易所 B 卖出（较高价格） 期货-期货 在较低价格的交易所做多 在较高价格的交易所做空 ⸻ B) 现货-期货套利（现金交易） 买入现货 卖出期货 利润来源： • 价格溢价 • 融资利率 • 收敛 ⸻ C) 融资利率套利 基于以下因素在不同交易所采取相反的头寸： • 正/负融资差​​异 • 净融资收益机会 例如：如果交易所 A 的融资利率为 +0.05%，交易所 B 的融资利率为 -0.03%，系统在进行对冲的同时捕捉融资差异。 ⸻ 4) 入场和出场逻辑（用户控制） 用户必须手动定义： • 入场点差百分比 • 出场点差百分比 • 资金门槛百分比 • 交易规模 • 杠杆（如适用） • 最大并发交易数量 • 止损百分比 • 滑点容忍度 • 最低流动性要求 示例：入场 = 6% 出场 = 2% 总收益 = 4% 净利润 = 点差 – 手续费 – 资金 ...

Expert Developer Wanted: Low-Latency Telegram Trading Bot for BTC/USDT (HFT/Scalping) Project Overview: I am looking for a senior blockchain/backend developer to build a high-performance Telegram-based trading bot specialized in BTC/USDT scalping. The bot must be optimized for speed, executing entries and exits almost instantaneously during peak volume hours. Core Functionality: Telegram Interface: Full control via Telegram (Start/Stop, Manual Override, Real-time P&L alerts). High-Speed Execution: Must use WebSockets (not REST) for sub-10ms data feeds. Volume-Based Logic: The bot must automatically trigger or increase activity during the 13:00–16:00 UTC window (or based on real-time volume spikes). Rapid Scalping Strategy: Automated "Sniper" entry and exit based o...

I need a self-contained plugin for Trust Wallet that adds full USDT support on both iOS and Android. The core features are straightforward: users must be able to send and receive USDT seamlessly, view an accurate transaction history (confirmations, timestamps, hash links), and enjoy the same security and usability they already have in the main Trust Wallet experience—no feature regressions. You’ll be working with the official Trust Wallet Core libraries, USDT ERC-20 contracts, and the mobile SDKs for iOS (Swift) and Android (Kotlin/Java). Clean integration is essential: the new module should slot into the existing wallet architecture so that balances refresh alongside other assets, push-notification logic keeps working, and any future wallet updates will not break the plugin. ...

I am building out the core of a new product on the Solana blockchain and need a seasoned engineer to write, test, and deploy custom smart contracts. Your job is to translate a set of functional requirements into secure, efficient on-chain programs, then walk me through deployment and version control so I can maintain the codebase moving forward. The role is 100 % Solana focused, so I expect fluency with Rust, Anchor, the Solana CLI, and standard auditing tools. If you also enjoy crafting full dApps or connecting on-chain logic to existing back-end services, that will be useful down the line, but for this phase the deliverable is solely the smart contract layer. Deliverables – Well-documented Rust/Anchor smart contracts that satisfy the functional spec – Local and test-net d...

Je cherche un formateur capable de m’accompagner pas à pas dans l’univers des crypto-monnaies. Mon objectif est clair : comprendre les bases indispensables et mettre en place une stratégie réaliste qui me permette de viser au moins 1 000 $ de revenus mensuels. Contexte • Domaine choisi : investissement financier, orientation crypto-monnaies. • Niveau actuel : débutant complet, aucune expérience pratique. Ce dont j’ai besoin 1. Programme structuré couvrant les notions essentielles : portefeuille, échanges, sécurité, analyse fondamentale et technique simplifiée. 2. Sessions interactives (appel vidéo ou chat) pour poser mes questions en direct. 3. Étapes d’action...

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.

Project Title Senior Android + Blockchain Developer Needed to Complete Multi-Chain Crypto Wallet (NEXA BULL) with MLM Integration Project Overview We are developing a multi-chain Android crypto wallet application named "NEXA BULL". The initial Android project structure and basic functionality are already developed, but several features still require completion, optimization, and full integration. We are looking for a highly experienced Android + Blockchain developer to complete the wallet and integrate it with our MLM website backend system. The wallet should function similarly to leading crypto wallets such as SafePal Wallet, Trust Wallet, and MetaMask, supporting multiple networks, tokens, live prices, and secure wallet management. Current Project Status The Android app has alr...

I have a bep20 token and require 2 options that both need to be included in the smart contract so users have 2 options to claim tokens: 1) Simple smart contract function on bsc where users send bnb to the contract address and receive project tokens in exchange. 2) Need users to interact with the smart contract by using a web3 function as simple as possible and get a set amount of tokens per claim and I need in this contract to take a small fee on top of gas that is to be deducted when user calls contract to claim tokens. This small fee will be sent to admin wallet for each transaction but this will not include gas (small fee will land in admins wallet each tx). I need for this all to be 1 transaction for the user so they call the contract from my website and metamask,...

I want to open a new trading account and get it ready for live use, but I’d prefer someone on the ground in Bangladesh to guide me step-by-step. The immediate task is straightforward: create the account in my name and make sure it is fully operational. Because I already trade on Binance, we can speak the same crypto language—USDT transfers, basic blockchain concepts, and exchange workflows won’t need explaining. Here’s what I expect from you: • Walk me through the sign-up flow in real time (video call or screen-share is fine). • Complete KYC and regional verification smoothly, using best practices you’ve tested yourself. • Leave me with clear, written next steps for deposits, withdrawals, and any Bangladesh-specific compliance tips. You must b...

I want to open a new trading account and get it ready for live use, but I’d prefer someone on the ground in Bangladesh to guide me step-by-step. The immediate task is straightforward: create the account in my name and make sure it is fully operational. Because I already trade on Binance, we can speak the same crypto language—USDT transfers, basic blockchain concepts, and exchange workflows won’t need explaining. Here’s what I expect from you: • Walk me through the sign-up flow in real time (video call or screen-share is fine). • Complete KYC and regional verification smoothly, using best practices you’ve tested yourself. • Enable all basic security layers—email/SMS confirmation and, if time allows, Google Authenticator 2FA—s...

I'm building Xrealy Ledger (XRY), a decentralized settlement infrastructure for financial institutions. I need expert assistance in three key areas: WASM-Based Programmability: - Smart contract deployment - Custom transaction processing - Integration with external APIs Regulatory-Native Privacy Enhancements: - Data encryption - User anonymity - Compliance with regulations Setting Up Decentralized Settlement Infrastructure Ideal skills and experience: - Proficiency in WASM and smart contract development - Strong background in cryptography and privacy protocols - Experience with decentralized finance (DeFi) infrastructures - Knowledge of regulatory compliance in the financial sector Looking for a developer who can work on all three aspects effectively. Dear ...

I want to open a new trading account and get it ready for live use, but I’d prefer someone on the ground in Bangladesh to guide me step-by-step. The immediate task is straightforward: create the account in my name and make sure it is fully operational. Because I already trade on Binance, we can speak the same crypto language—USDT transfers, basic blockchain concepts, and exchange workflows won’t need explaining. Here’s what I expect from you: • Walk me through the sign-up flow in real time (video call or screen-share is fine). • Complete KYC and regional verification smoothly, using best practices you’ve tested yourself. • Enable all basic security layers—email/SMS confirmation and, if time allows, Google Authenticator 2FA—s...

Freelancer Needed – Advanced On-Chain Gambling Protocol with Liquidity Pool, Fully Operational Arbitrage Engine, Railway Backend Compatibility, and Optional Complete Automation I am seeking a highly experienced blockchain developer to finalize, secure, and deploy my on-chain Gambling system. The project already has a working base structure (Telegram bot + smart contract framework), but it must now be transformed into a fully operational, production-ready decentralized protocol with sustainable liquidity mechanics, integrated arbitrage logic, and a backend fully compatible with Railway. This is not a basic betting application. The objective is to build a mathematically sound, automated, liquidity-backed on-chain betting system that functions independently and does not require manual...