thumb|Albums came on compact discs stored in jewel cases. right|thumb|Early record albums from the first half of the 20th century resembled photo albums, being packaged in book form on multiple 78 rp
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 0xd61bf49c2d03738217c915e42fb650aca6d2541f1d6ddbac5c4a822bb3857102. Chain 2 (Bitcoin): anchored in block 954002 (2026-06-16T20:47:12Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/3203437a-f252-4192-8eef-b1d93b0f27be.json and https://artists.proofprofile.net/proofs/artist/3203437a-f252-4192-8eef-b1d93b0f27be.ots, the client at https://opentimestamps.org runs `ots verify -f record.json proof.ots`.
Majestice SilverEye (Commentary Version from ALBUMthePodcast)