The official documentation for Core Blockchain

BTCVault‑CLI – Educational command‑line tool modeling a trust‑minimized Bitcoin vault with BitVM2‑style optimistic verification. Operator publishes execution trace commitments; anyone can challenge fraudulent withdrawals using fraud witnesses (hash commitments). TypeScript reference for learning BitVM2, challenge periods, and permissionless.

Solidity Smart-Contract implementation of the Triple-A Bitcoin (aaaBTC) and DeFi

Mobile-native BTCfi dApp for the Solana Seeker — cbBTC ↔ SOL swaps via Jupiter, Seed Vault aware.

Real-time risk analytics dashboard for Elastos BTCD — the first third-party analytics tool for Bitcoin stablecoin on ESC

Tokenised Land Ownership for real world finance BTCFi

Bitcoin data for AI agents. Pay-per-query via x402 micropayments. No API keys. No subscriptions. No tokens.

Shielded Concentrated Liquidity Market Maker (CLMM) for Bitcoin on Starknet