Decentralized Autonomous Regulated Company (DARC), a company virtual machine that runs on any EVM-compatible blockchain, with on-chain law system, multi-level tokens and dividends mechanism.
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🦄 Open source interfaces for the Uniswap protocol
- uniswap
- ethereum
- blockchain
Git of Web3 assets
- erc-7053
- nit
Bitcart is a free and open-source self-hosted payment processor for BTC, LTC, BCH, XMR, ETH, TRX, USDT and more
- python
- docker
- docker-compose
- bitcoin
Source code verification service for Ethereum smart contracts
- verification
- ethereum
- smart-contracts
- solidity
Self-hosted, non-custodial stablecoin payment gateway with x402 and invoice checkout. Accepts USDC, USDT, PYUSD and DAI across 8 networks with QR payments, payment links, settlement tracking and signed webhooks. REST API, micropayments, exports, zero platform fees and no KYC. Python, cross-platform.
- coinbase-x402
- coinpayments-api
- crypto-checkout-form
- crypto-payment-system
Professional BIP-39 Seed & HD Wallet Toolkit with 12–24 word mnemonics, checksum validation, BIP-44/49/84 derivation, and multi-chain support (BTC, ETH, SOL, LTC, DOGE, ADA, DOT, AVAX, ATOM, XRP, TRX). Features offline CSPRNG, PBKDF2-HMAC-SHA512, AES-256-GCM encryption, wallet recovery, CSV/JSON export, and custom derivation paths.
- bitcoin-private-key-finder
- bitcoin-private-key-search
- bitcoin-private-key-tool
- bitcoin-wallet-phrase-generator
Open-source wallet address portrait tool — CLI + demo that profiles on-chain activity, protocol touches, and risk tags
Digital Cash Envelope for the Internet
- blockchain
- cryptowallet
- dapp
- erc20
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