HoldBook
A prototype for tokenized asset issuance, KYC, and hold workflows on Hedera.
Demo
About
HoldBook is a secondary-market prototype for fictional equity on Hedera Testnet. Eligible users sign NOVA/HBAR orders, which are matched by price-time priority. Sellers lock tokens through ATS Holds, and buyers pay for atomic delivery and settlement. Recorded tests cover normal trades, reverse trades, cancellation and expired-Hold recovery. KYC is synthetic, and reviewers can explore the demo without a wallet.
How it's made
Built with React, TypeScript, Hedera ATS SDK and MetaMask. A Go service authenticates signed orders, matches trades and stores results in PostgreSQL. A Solidity contract executes ATS Holds and HBAR payments atomically. GitHub Pages, Cloud Run and Neon host the application. AI assistance is documented, wallet actions require manual approval, and original software is MIT-licensed.