Ann Matthews Martin (born August 12, 1955) is an American writer of children's and young adult fiction, known best for The Baby-Sitters Club series. Early life Ann Matthews Martin grew up in Princeto
1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Read CopyrightID inside OTSCanonicalRecord → must equal the CopyrightID above 5. GET OTSVerificationAPI → pre-computed 6-check result from server 6. If all match: this entity was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55062417e7c907b66c0d49cc2c51fdd71ea39f51eb5ca050aee3411abca32c8a. Chain 2 (Bitcoin): anchored in block 954342 (2026-06-19T03:22:39Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/89211b92-d8d4-4bb0-ab11-a9f07beb36b3.json and https://artists.proofprofile.net/proofs/artist/89211b92-d8d4-4bb0-ab11-a9f07beb36b3.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Welcome to Camden Falls [Main Street 1 (Unabridged)]
Needle and Thread [Main Street 2 (Unabridged)]
'Tis the Season [Main Street 3 (Unabridged)]
Best Friends [Main Street 4 (Unabridged)]
The Secret Book Club [Main Street 5 (Unabridged)]