Etherscanpekerjaan

I have a single wallet address and must understand which exchange or operator controls it. The job centres on transaction-pattern analysis rather than smart-contract performance or general network security. Using your preferred on-chain analytics stack—Etherscan, Blockchair, Chainalysis Reactor, Crystal, or similar—map the flow of funds, identify clustering links, and present evidence strong enough for compliance or investigative review. You will receive: • The wallet address in question • A brief chronology of the activity I have already logged I need back: • A concise report that names the most probable exchange/operator behind the wallet, with screenshots or query exports backing each conclusion • A clear explanation of the heuristics you applied...

...deploy the contract, then hand over everything required for future maintenance. Deliverables • Verified Solidity source code with mint, burn, and pause modules • Full test suite covering core logic and edge cases • Deployment scripts and step-by-step notes (addresses, gas used, etherscan verification) • Final token address on Ethereum mainnet or a clearly documented test deployment if mainnet is postponed Acceptance criteria ✔ Contract passes all unit tests and is visible as “Contract Verified” on Etherscan ✔ Mint, burn, and pause functions work as intended through a simple demo script or UI ✔ Code is lint-clean and compiles without warnings under the latest stable Solidity compiler If anything is unclear, please outline your ap...

...functions are essential. I will take care of the front-end; your focus is Solidity coding, comprehensive unit tests, deployment scripts, and brief hand-over documentation that explains each function and how to verify earnings on-chain. When you reply, highlight relevant experience delivering MLM or complex referral logic on any EVM chain, and point me to contracts I can inspect on BscScan or Etherscan. A concise outline of your approach—covering overflow protection, upgradeability choices, and audit readiness—will speed up selection. Deliverables (all must be met for acceptance): • Optimised, audited-style Solidity contract implementing Binary compensation logic • Hardhat/Foundry project with full unit & integration tests • Deployment & ...

...Tech Stack (already built): Frontend: React 19 + TypeScript + Vite + Tailwind Backend: Node.js + Express + tRPC Other: MySQL/TiDB (optional), external APIs (Etherscan + Coinbase) You will receive the full project ZIP and production build. (Example files: , , and environment variables documentation.) What I need from you: 1. Deploy the app to production Upload project to my server (I can provide VPS or hosting) Install Node + pnpm Run: pnpm install pnpm build pnpm start (preferably under PM2) Configure environment variables (I will provide values) Ensure wallet verification (Etherscan + Coinbase) works 2. Set up domain / subdomain for the portal One of these: (preferred) OR (via reverse proxy)

I need a working proof-of-concept that lets anyone drop a wallet address or transaction hash into a Telegram chat and instantly receive a plain-English risk report. The flow is straightforward: 1. The user presses an inline button or picks from a simple menu, then submits an Ethereum, Binance Smart Chain, or Polygon address / tx hash. 2. The backend calls the appropriate on-chain API (Etherscan, BscScan, Polygonscan or a comparable JSON-RPC endpoint) to pull balances, age, token flows, contract flags, and any black-list data you find relevant. 3. Those raw metrics are fed into a pre-trained language model that returns a three-level rating—Low, Medium, or High risk—followed by a short explanation and a practical recommendation. 4. The bot posts that summary back to...

I need a comprehensive guide on tracking individual address transactions using Etherscan. The guide should include: - Step-by-step instructions on accessing and using Etherscan for transaction tracking. - Detailed explanation of how to extract specific information: sender and recipient addresses, ETH value, gas fees, and timestamps. - Tips for navigating the platform efficiently. Ideal Skills & Experience: - Proficiency in using Etherscan. - Strong understanding of Ethereum transactions. - Ability to create clear, concise instructional content.

I have a private blockchain testnet running on a custom chain and I need a full-featured block explorer wired up to it. The goal is simple: once the job is done I want to open a URL and be able to trace every transaction, browse each block, and inspect any smart-contract activity in real time—exactly the way Etherscan does it for Ethereum. All frontend assets and styling are already sitting in my Git repository, so you can clone the repo and focus on the back-end integration plus any API work needed to make the data flow. If you prefer to replace or tweak parts of the UI you’re welcome, as long as the final look remains consistent with what’s in Git. What has to work • Live transaction feed with searchable details (hash, sender, receiver, gas, etc.) &bul...

...chain • A token-validation script that consumes my JSON and returns “valid / invalid” flags via the chosen API • An enhanced getHighVolumePairs() function with clear inline docs and a brief README on how to run everything with Node.js Acceptance criteria • All six factory files compile and deploy in a local hardhat test without errors • Token validation passes >95 % of addresses that etherscan (or chain equivalent) marks as verified contracts • getHighVolumePairs() returns at least the top ten pairs per chain within 5 s on a standard RPC endpoint The scope is focused and the budget is modest, so I value clean, well-commented code over bells and whistles. In your bid, include a short note about a similar multi-chain utility you h...

I’m ready to launch a new cryptocu...I need delivered: • Clean, well-commented Solidity contract that implements standard ERC-20 functions plus mint/burn and ownership control. • Python scripts (using or Brownie/Hardhat wrappers) for compiling, unit testing, and deploying the contract. • A short README showing command-line steps to reproduce tests and push the contract to a testnet, then mainnet. • Verification on Etherscan/BSCScan with the contract source and metadata visible. Acceptance will be based on the contract passing the common ERC-20 test suite, successful deployment to a public testnet I specify, and my ability to repeat the process locally from your README. If you’ve shipped tokens before, especially on BSC, let me see a tx hash ...

We’re looking for an experienced smart contract developer to build a token contract and a presale contract with multi-stage pricing and post-sale claim features. The project will run on Ethereum, supporting both ET...re-entrancy safety Clean, secure coding (no unsafe external calls) Workflow • Code: Implement clean, gas-efficient ERC20 and presale logic • Tests: Provide comprehensive Hardhat/Foundry tests covering core and edge cases • Deployment: One-command script to deploy to testnet/mainnet with clear README instructions • Handover: Short guide explaining where to plug in tokenomics and how to verify on Etherscan I’ll review commits regularly, so well-commented code is important. If you’ve previously built presale contracts or have audit...

...deployed on the Ethereum Mainnet and involves a custom smart contract (a reward/yield aggregator) and a React/ frontend (based on the file we will provide). Scope of Work and Core Requirements (You MUST Verify This): Deployment Verification (Ethereum Mainnet): Double-check that the core smart contracts and all dependencies are correctly deployed, verified (on Etherscan), and operational on the Ethereum Mainnet. Verify the ownership structure and confirm that critical administrative functions (if any) are secured. The primary reward token contract address to verify is: 0xE1edB9510e468C745CCAD91238b83CF63BF7c7aD. "Real-Time Earning" Logic Audit: Rigorously audit the smart contract logic that governs the "real-time crypto earning" to ensure it calculates r...

...deployed on the Ethereum Mainnet and involves a custom smart contract (a reward/yield aggregator) and a React/ frontend (based on the file we will provide). Scope of Work and Core Requirements (You MUST Verify This): Deployment Verification (Ethereum Mainnet): Double-check that the core smart contracts and all dependencies are correctly deployed, verified (on Etherscan), and operational on the Ethereum Mainnet. Verify the ownership structure and confirm that critical administrative functions (if any) are secured. The primary reward token contract address to verify is: 0xE1edB9510e468C745CCAD91238b83CF63BF7c7aD. "Real-Time Earning" Logic Audit: Rigorously audit the smart contract logic that governs the "real-time crypto earning" to ensure it calculates r...

...deployed on the Ethereum Mainnet and involves a custom smart contract (a reward/yield aggregator) and a React/ frontend (based on the file we will provide). Scope of Work and Core Requirements (You MUST Verify This): Deployment Verification (Ethereum Mainnet): Double-check that the core smart contracts and all dependencies are correctly deployed, verified (on Etherscan), and operational on the Ethereum Mainnet. Verify the ownership structure and confirm that critical administrative functions (if any) are secured. The primary reward token contract address to verify is: 0xE1edB9510e468C745CCAD91238b83CF63BF7c7aD. "Real-Time Earning" Logic Audit: Rigorously audit the smart contract logic that governs the "real-time crypto earning" to ensure it calculates r...

...multiple withdrawal tests (small, random, and large) on a public testnet (e.g., Sepolia). Links to all successful transactions on the public Etherscan for verification. Bug Report (If it fails): If the flow fails at any point or any of the stress tests fail, you must provide a detailed bug report explaining the specific failure (e.g., "Transaction failed on large amount due to insufficient gas calculation," or "Transfer logic is missing a zero-check"). Required Skills: Expert-level : Ability to write, debug, and audit token transfer logic. Rigorous Web3 QA & Testing: Proven experience with Testnets (Sepolia, etc.), test faucets, and Etherscan transaction analysis. Data Handling: Experience verifying that large numeric inputs are handled correc...

...multiple withdrawal tests (small, random, and large) on a public testnet (e.g., Sepolia). Links to all successful transactions on the public Etherscan for verification. Bug Report (If it fails): If the flow fails at any point or any of the stress tests fail, you must provide a detailed bug report explaining the specific failure (e.g., "Transaction failed on large amount due to insufficient gas calculation," or "Transfer logic is missing a zero-check"). Required Skills: Expert-level : Ability to write, debug, and audit token transfer logic. Rigorous Web3 QA & Testing: Proven experience with Testnets (Sepolia, etc.), test faucets, and Etherscan transaction analysis. Data Handling: Experience verifying that large numeric inputs are handled correc...

...multiple withdrawal tests (small, random, and large) on a public testnet (e.g., Sepolia). Links to all successful transactions on the public Etherscan for verification. Bug Report (If it fails): If the flow fails at any point or any of the stress tests fail, you must provide a detailed bug report explaining the specific failure (e.g., "Transaction failed on large amount due to insufficient gas calculation," or "Transfer logic is missing a zero-check"). Required Skills: Expert-level : Ability to write, debug, and audit token transfer logic. Rigorous Web3 QA & Testing: Proven experience with Testnets (Sepolia, etc.), test faucets, and Etherscan transaction analysis. Data Handling: Experience verifying that large numeric inputs are handled correc...

...Security checklist banana (dApp connect flows), revoke approvals guide banana, user-facing documentation/awareness materials banana. Test task: small paid task + simple on-site or remote demo to prove skills. Must-have (non-negotiable): Practical experience with at least one blockchain (Ethereum/TRON/BSC) and wallet integrations. Comfortable reading on-chain transactions on explorers (Tronscan/Etherscan). GitHub / portfolio showing past dApp work or security checks / audit notes. Based in Indore (able to meet in person). Good communication in Hindi/English. Good-to-have: Experience with solidity / smart contract auditing tools (Hardhat, Truffle, Slither, MythX). Experience with revoke tools ( or TRON equivalents) and on-chain forensics. Prior work on scams recovery /...

...Foundry test suite with at least 90 % coverage • Deployment scripts and environment configs for testnets & mainnets • Lightweight React or dashboard that interacts with the contracts via or • Node.js/Express REST or GraphQL service that indexes events and serves read-optimized endpoints • CI/CD pipeline on GitHub Actions for linting, tests, build, and automatic Etherscan verification Nice to have (future phases): governance mechanics, NFT modules, Layer-2 integrations. Acceptance Criteria – Verified contract bytecode publicly accessible – Test suite passes on a minimum of two public testnets – Clear README covering setup, deployment, and contribution guidelines If you’ve shipped production-grade Solidity code a...

...Solidity & Ethereum smart contracts Familiar with AMM / DeFi concepts (Uniswap, PancakeSwap, SushiSwap) Understanding of security best practices (reentrancy, overflow, etc.) Experience with Hardhat or Foundry testing frameworks Ability to deliver clean, well-commented code Please include: A short intro about your relevant experience Links to similar smart contracts you’ve written (GitHub, Etherscan, etc.) Estimated timeline and total cost...

...and OpenZeppelin-based security patterns. • Admin functions for adjusting round dates, reward parameters and treasury wallet. • Lightweight web dashboard (React or similar) for KYC, purchase, balance and reward redemption. • Mainnet deployment, full documentation and a short knowledge-transfer session. Acceptance criteria • Contracts compile cleanly, pass unit tests and are verified on Etherscan. • Reward and dividend calculations are accurate to the smallest unit. • Lottery results are transparent and tamper-proof. • Gas consumption is optimised for frequent reward updates. If you’ve launched comparable crowdsales or hospitality utility tokens, send contract addresses or live links—real-world proof matters more to me...

I’...to release a new Ethereum-based DApp and need its accompanying ERC-20 utility token created and live as soon as possible. Here’s what I’m after: • A clean, well-commented Solidity contract, built with the latest OpenZeppelin libraries, that meets standard ERC-20 behaviour. • Deployment first to a public testnet for validation, then to mainnet once we’re happy. • Verified source code on Etherscan and full ownership transferred to my wallet. • A short README plus the Hardhat/Truffle scripts you used so I can reproduce the deployment if needed. The sooner this is delivered, the better—speed is a priority, provided security best practices aren’t compromised. If you’ve launched tokens before and can move quickly...

...anything you uncover can feed directly into an active case. What I need now is a seasoned blockchain forensics specialist who can • trace the stolen funds across the Ethereum network, • identify the individual or group behind the recipient address, and • build a viable path to recovering as much of the ETH as possible. Experience with on-chain analytics platforms (Chainalysis, TRM, Nansen, Etherscan Pro, etc.) is essential, and prior success stories of fund recovery will weigh heavily in my decision. If you have legal-tech partnerships or contacts in exchanges that can act on a red-flag request, even better. Compensation is performance-driven: I am offering an upfront fee plus an agreed percentage of any assets you help bring back. Final deliverables shoul...

...a single block. No blacklist/whitelist or multi-sig is required right now. Deliverables 1. Well-commented Solidity source (≥0.8.x) using OpenZeppelin where practical 2. Hardhat or Foundry test suite covering mint, transfer, ownership hand-off and rate-limit edge cases 3. Deployment script and brief README so I can launch from my own wallet 4. Flattened, verified contract published on Etherscan (testnet first, then mainnet after sign-off) If anything in the spec clashes with best practice, flag it early; otherwise, quote an ETA and I’ll share the token name, symbol and initial supply so you can start coding....

...dividends to all holders, another slice to the marketing wallet, and the remainder to liquidity—exactly as Coin Tool tokens already handle it. Key expectations – Solidity contract with clearly exposed variables for fee percentages, referral eligibility window, max wallet, etc. – Gas-efficient, security-audited logic (OpenZeppelin libraries welcome). – Scripts for deployment and verification on Etherscan. – A quick demo on a public testnet showing the referral payment firing correctly. I only need to see your experience working with fee-on-transfer ERC-20 tokens or similar reward mechanics; past links to verified contracts are perfect. If you have built anything using the Coin Tool template, that is a plus. Once the contract looks solid o...

... Marketing landing page. FAQs, blog, whitepaper. Terms of Service, Privacy Policy. Dapp Embedding Option 1: Embed React app in iframe. Option 2: Serve Dapp from subdomain (e.g., ). 6. Deployment Requirements 6.1 Smart Contract Compile & deploy via Hardhat. Deploy first to testnet (Goerli/Sepolia). Deploy to mainnet or L2 (Arbitrum, Optimism, Base). Verify contracts on Etherscan. 6.2 Frontend Host on Vercel/Netlify. Configure environment variables for contract addresses. 6.3 Backend Deploy Node.js service on AWS/DigitalOcean. Secure endpoints with rate-limiting. 7. Security Requirements Smart Contract Audits Internal review. External audit before launch. Multisig Ownership Protect admin keys with Gnosis Safe. Bug Bounty Program Encourage community testi...

I have an ER...is missed. The engagement is focused solely on deploying the smart contract. I do not need another audit or help configuring tools; instead, I want clear, real-time assistance that covers: • Preparing the deploy script and constructor parameters • Estimating gas and setting safe transaction settings • Broadcasting the transaction, confirming the receipt, and verifying the source code on Etherscan • Supplying a concise, commented script or command sequence I can reuse for future deployments Ideally we screen-share, step through the process, and you leave me confident that the contract is live and matches the exact bytecode I compiled locally. If you’ve deployed ERC-20 tokens before and can demonstrate a smooth, secure workflow, I&rsqu...

... Marketing landing page. FAQs, blog, whitepaper. Terms of Service, Privacy Policy. Dapp Embedding Option 1: Embed React app in iframe. Option 2: Serve Dapp from subdomain (e.g., ). 6. Deployment Requirements 6.1 Smart Contract Compile & deploy via Hardhat. Deploy first to testnet (Goerli/Sepolia). Deploy to mainnet or L2 (Arbitrum, Optimism, Base). Verify contracts on Etherscan. 6.2 Frontend Host on Vercel/Netlify. Configure environment variables for contract addresses. 6.3 Backend Deploy Node.js service on AWS/DigitalOcean. Secure endpoints with rate-limiting. 7. Security Requirements Smart Contract Audits Internal review. External audit before launch. Multisig Ownership Protect admin keys with Gnosis Safe. Bug Bounty Program Encourage community testi...

... Marketing landing page. FAQs, blog, whitepaper. Terms of Service, Privacy Policy. Dapp Embedding Option 1: Embed React app in iframe. Option 2: Serve Dapp from subdomain (e.g., ). 6. Deployment Requirements 6.1 Smart Contract Compile & deploy via Hardhat. Deploy first to testnet (Goerli/Sepolia). Deploy to mainnet or L2 (Arbitrum, Optimism, Base). Verify contracts on Etherscan. 6.2 Frontend Host on Vercel/Netlify. Configure environment variables for contract addresses. 6.3 Backend Deploy Node.js service on AWS/DigitalOcean. Secure endpoints with rate-limiting. 7. Security Requirements Smart Contract Audits Internal review. External audit before launch. Multisig Ownership Protect admin keys with Gnosis Safe. Bug Bounty Program Encourage community testi...

I have already written the token smart contract and now need a steady hand to get it live on the Ethereum network. Because the code is finished, the job focuses exclusively on the deployment phase: compiling, pushing the transaction, verifying the contract on Etherscan and confirming the initial ownership settings. Here is what I am expecting: • A clean deployment of my existing token contract to an Ethereum testnet first, followed by mainnet once we confirm everything works. • Full verification on Etherscan so the source is publicly viewable and all functions are labelled. • A short hand-over document that lists the deployed address, the ABI and the exact commands or scripts you used (Hardhat, Truffle or Remix—your choice, as long as it is reproduc...

I’m kicking off a new blockchain initiative and need end-to-end development that runs on Ethereum. W...collaborate with me on choosing the right contract patterns, gas-optimised design, and a straightforward way to integrate a future web or mobile front-end via or Ethers.js. Deliverables I’d like to see: • A brief technical roadmap we both sign off on • Well-documented Solidity contracts with unit tests • Automated deployment scripts and clear instructions for verification on Etherscan • A short hand-over session to walk through the code, tooling, and next steps I’m open to your suggestions on best practices and security audits, but Ethereum support is non-negotiable. If you can swiftly translate broad ideas into solid, audited co...

I’m building a new DeFi protocol on Ethereum and need a Solidity developer who is physically based in the United States so we can align on compliance questions, real-time collaboration, and occasional in-person working sessions. The core of the project is a suite of smart contracts that will handle deposits, yield generation, and governance on mainnet. You’ll... Deliverables I need from you: • Solidity source for all contracts, following OpenZeppelin standards • A complete test suite with >95 % coverage • Hardhat deployment scripts and configuration for Goerli and mainnet • Technical documentation and a short hand-off call once everything is deployed If you’ve shipped production-grade DeFi applications before—and can prove it with re...

The Solidity code for my ERC-20 token is complete; what remains is getting it onto the Ethereum mainnet quickly and cleanly. I need someone who can ...over the live address along with a brief note on the steps taken. Key points • Network: Ethereum mainnet (not testnet) • Contract type: Standard ERC-20 (features such as minting, burning, or pausing are already coded where relevant) • Tools: Hardhat, Truffle, or Remix—use whichever you prefer, provided the final contract is verified on Etherscan Deliverables 1. Deployed contract address with transaction hash 2. Verified source code on Etherscan 3. Short deployment report (commands used, gas spent, and any ownership keys or admin functions I should know) Once everything is live and confirmed, ...

...supply caps, metadata URIs, and future extensions such as batch airdrops or role-based minting. Here’s what I expect as part of the engagement: • Clean, well-commented Solidity 0.8.x code based on OpenZeppelin libraries, built with Hardhat or Truffle. • Deployment to an Ethereum testnet first (Goerli/Sepolia) so I can verify functionality, followed by mainnet deployment from my wallet. • Etherscan verification and a brief hand-off guide that explains addresses, constructor arguments, and key functions. • Optional scripts (Node.js) for batch minting and simple CLI interaction would be a plus. I will supply artwork metadata and wallet addresses; you handle everything on-chain. If this fits your skill set, let’s discuss timelines and any edg...

ERC-1155 NFT deploy. NFT image and attributes should be shown on etherscan.

We ...wallet breakdown (circulating vs locked/treasury/team/marketing addresses). 3. Draft a proper Annex C supply update form for CoinMarketCap (Google Sheet format). 4. Ensure data is aligned with CoinGecko’s requirements. 5. Provide screenshots/links (Etherscan, liquidity locks, etc.) as proof for submissions. 6. Deliver a clean package we can submit ourselves to both CMC and CoinGecko. Deliverables: • Completed Annex C sheet with wallet breakdown. • Draft text for email/submission to CMC & CoinGecko. • Documentation of supporting proof (Etherscan links/screenshots). I'm looking for the right person to help me with this. Type "purple hearts" in the submission to prove you read everything and you're not a bot. Explain wh...

I am ready to launch a new ERC-20 token intended for everyday transactional use and want the entire journey handled professionally—from clean, audited code to a smooth hand-off of ownership. Here is what I need: • A well-structured smart contract written in Solidity, verified on Etherscan and optimised for gas. • Secure deployment on Ethereum mainnet to a multisig wallet that you configure for me, with clear, step-by-step instructions so my team can operate it confidently. • Practical advice on tokenomics: total supply, initial distribution, reserve strategy and the percentage we might allocate to you as the developer while ensuring long-term control stays with us. • Support in preparing the technical paperwork (ABI, contract address, audit summary) requi...

I need help with reviewing my smart contract,...needed, perform a follow-up review to confirm all critical and high-risk items are resolved. • Prepare or refine deployment scripts, execute a test-net rollout, verify the contract on Etherscan, and support the final mainnet launch, including initial minting/burning transactions. • Deliver all artefacts: audited Solidity source, migration scripts, verified contract address, and the signed audit report. Acceptance criteria • Zero unresolved critical or high-severity issues in the final audit. • Successful test-net launch demonstrating mint and burn operations. • Contract verified and published on Etherscan and deployed to Ethereum mainnet. The code is ready for you today; once we agree on mile...

I need a developer to build a web-based tool that wo...USDT, XMR, TON, etc.). • Generate payment QR codes & confirm transactions. • Handle over/under-payment. 4. AI Assistant (Basic Integration) • A chat assistant that explains results, guides the user, and provides risk insights. Technology Preference: • Frontend: + TailwindCSS • Backend: Node.js (Express) or Python (FastAPI) • Database: MongoDB Atlas • Blockchain APIs: Alchemy, Moralis, Etherscan, Solana RPC, TON Center, Blockchair • AI: OpenAI GPT API (for now) Deliverables: • MVP Web App (Landing Page + Dashboard) • Clean and documented code • Deployment-ready (can be hosted on Vercel + AWS/Heroku) Note: This is a confidential project. More details about advanced fe...

We’re seeking an experienced crypto payroll handler to manage recurring payments for our Australia-focused team using decentralized platforms (Ethereum, Solana, or Layer 2s). This is an open project where you can claim tasks weekly or monthly based on availability. Responsibilities: ✔ Process payroll via smart contracts or DeFi platforms (e.g., Sablier, Superfluid) ✔...✔ Maintain audit-ready records (CSV/Excel with tx hashes, timestamps) ✔ Suggest gas optimization strategies for batch payments Requirements: ✔ Proven experience with: Crypto payroll systems (minimum 3 projects) Wallet management (MetaMask, Ledger, multisig setups) Tax/compliance basics (AU GST/TFN reporting) ✔ Technical Skills: Read basic smart contracts (Solidity/Rust a plus) Navigate Etherscan/Solana ...

...cryptocurrency (token or coin) on either Ethereum, Binance Smart Chain (BSC), or another EVM-compatible blockchain. What I Need: • Creation of a custom token (ERC-20 / BEP-20 standard) • Smart contract development & deployment • Ownership functions (mint, burn, pause, blacklist, etc. if required) • Tokenomics setup (supply, decimals, fees/taxes if needed) • Verified contract on BscScan/Etherscan (with logo, name, etc.) • Wallet integration (Metamask compatible) • Assistance with testing on testnet and deploying to mainnet Preferred Skills: • Solidity / Vyper • Web3 / • Remix, Hardhat, Truffle • Knowledge of DeFi tools, DEXes, and audit best practices Deliverables: • Source code of the smart contract ...

I need a simple blockchain contract decoded and developed on the Polygon (MATIC) platform. Ideal skills include: - Proficiency in smart contract development - Experience with Polygon (MATIC) - Knowledge of Etherscan and contract deployment

I need an experienced coder to integrate crypto wallet functionality into my nearly completed site. The project is accessed through Wordpress, with only the database access plugin active. Requirements: - Connect crypto wallet functionality to a basic MySQL database. - The database is currently empty. - Wallet sup...Ethereum (ETH) and USD Coin (USDC). - Functionality needed to: - Send and receive transactions - Track transaction history - Receive USD & ETH and issue tokens - Must integrate with Trust Wallet Ideal Skills and Experience: - Proficiency in WordPress, MySQL, HTML, CSS, PHP, and JS - Experience with crypto transactions and wallet integration - Familiarity with Trust Wallet/MetaMask/Coinbase/Etherscan & more Please include examples of previous similar ...

I need an experienced developer to update the presale date on my ERC20 contract and related content on Etherscan and corresponding Cpanel website purchase page. Requirements: - Access to Cpanel and Solidity - Update presale date in the contract - Change text content on the related page Ideal Skills: - Proficiency in Solidity and smart contract management - Familiarity with Etherscan and Cpanel - Attention to detail and accuracy Looking forward to your bids!

I'm encountering an issue on Etherscan where I'm getting the error "Error! Unable to find matching Contract Bytecode and ABI." This is happening for a smart contract that I've deployed on the Ethereum blockchain using Remix IDE. I have verified the source code on Etherscan after deployment, so I'm looking for someone with the following skills: - Strong experience with Ethereum smart contracts - Proficiency in using Remix IDE - Expertise in Etherscan and resolving verification issues - Solid understanding of Solidity and smart contract bytecode Please provide a detailed approach to fix this issue.

...API (e.g., CoinGecko) • Provide basic frontend customization (logo, color scheme, layout) • Optional: DexGuru plugin support Deliverables: • Functional block explorer hosted on testnet or temporary domain • Deployment documentation so we can spin up new instances later • Support for minor post-delivery fixes (at least 2 weeks) ⸻ Ideal Skills: • Experience with Blockscout, Otterscan, or Etherscan-style tools • Proficiency in Solidity, Node.js, and PostgreSQL • Familiarity with smart contract verification tools • Understanding of EVM-compatible chains and Web3 infrastructure ⸻ To Apply: • Send links to similar projects (block explorers, dApps, or contract dashboards) • Tell us what stack you’d use and how ...

...The scope includes everything from token creation to successful listing on CoinMarketCap (CMC). Scope of Work: Token Development Blockchain: Ethereum (ERC20), Binance Smart Chain (BEP20), or based on your recommendation Token details: name, symbol, total supply, and tokenomics (to be discussed) Smart contract development (secure, efficient, and upgradable) Contract verification on BSCScan/Etherscan Project Website Professional landing page design Include sections like About, Tokenomics, Roadmap, Whitepaper, Team, and Contact Optional: Dashboard for users/investors Wallet integration (e.g., MetaMask, Trust Wallet) Documentation & Whitepaper High-quality whitepaper (in English) Clear and strategic tokenomics model Use-case explanation and technical architecture (i...

...description) Auction features: Bid incrementing Auto-close after 24 hours of inactivity Manual closure by owner Frontend: List of active auctions with details Bid placement interface MetaMask integration General Requirements: Network: Sepolia Testnet Tech Stack: Solidity, React (or vanilla JS) Code: Must be manually written (no AI-generated code) Verification: Contract verification on Etherscan Provided Materials: Complete technical specifications NFT metadata examples Freelancer Expectations: Experience with ERC-20 and ERC-721 standards Proficiency in Sepolia Testnet deployment Adherence to deadlines Short Description (for platforms): "Development of ERC-20 GymCoin token and ERC-721 NFT training auction system on Sepolia. Requires Solidity smart contrac...

...ensures continuous revenue while offering valuable trading insights, alerts, and portfolio analytics. ? Technical Requirements • iOS Development (Swift, SwiftUI, Xcode). • API Integration (REST, CoinMarketCap for crypto data, Etherscan for wallet tracking). • Google AdMob Integration (for free version monetization). • Apple In-App Subscriptions (using RevenueCat or standard IAP system). • Local Storage (CoreData, UserDefaults, SQLite for portfolio tracking). • Push Notifications (for price alerts, market updates). • Secure Blockchain Wallet API Integration (Etherscan, BscScan, etc.). • App Store Submission (ensuring compliance with Apple guidelines). ? Timeline & Budget ? Deadline: 3 to 4 weeks from project start. ? Bu...

...ensures continuous revenue while offering valuable trading insights, alerts, and portfolio analytics. ? Technical Requirements • iOS Development (Swift, SwiftUI, Xcode). • API Integration (REST, CoinMarketCap for crypto data, Etherscan for wallet tracking). • Google AdMob Integration (for free version monetization). • Apple In-App Subscriptions (using RevenueCat or standard IAP system). • Local Storage (CoreData, UserDefaults, SQLite for portfolio tracking). • Push Notifications (for price alerts, market updates). • Secure Blockchain Wallet API Integration (Etherscan, BscScan, etc.). • App Store Submission (ensuring compliance with Apple guidelines). ? Timeline & Budget ? Deadline: 3 to 4 weeks from project start. ? Bu...

I need expert help to interpret the results from Etherscan regarding 4 transaction hashes. The focus will be on understanding the transaction details, specifically the status and confirmations of these transactions. Ultimately, I want to ascertain the success or failure of each transaction.