Tommy Wallach is an American author, musician, screenwriter, and game designer. Wallach is best known for his YA novel We All Looked Up, which spent over six months on the New York Times bestseller l
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 0x3288f3fe75a1ccfb49395da2b2acb653a30a846ec2344cf02ee905380e67e8f4. Chain 2 (Bitcoin): anchored in block 953889 (2026-06-16T04:57:45Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/0e5e9b20-6ecd-4706-8c45-2db327a23cff.json and https://artists.proofprofile.net/proofs/artist/0e5e9b20-6ecd-4706-8c45-2db327a23cff.ots, the client at https://opentimestamps.org runs `ots verify -f record.json proof.ots`.