Samuel Wilson (September 13, 1766 – July 31, 1854) was an American meat packer who lived in Troy, New York, whose name is purportedly the source of the personification of the United States known as "U
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 0x6463663e3985c6ba64a4c6ad7d6c3abee9a4c13ec47a8441a5e796c9e460f1b6. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/458b0f9a-d34d-4e10-829e-bed4b13e0110.json and https://artists.proofprofile.net/proofs/artist/458b0f9a-d34d-4e10-829e-bed4b13e0110.ots, the client at https://opentimestamps.org runs `ots verify -f record.json proof.ots`.