Oliver Sain Jr. (March 1, 1932 – October 28, 2003) was an American saxophonist, songwriter, bandleader, drummer and record producer, who was an important figure in the development of rhythm and blues
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 0xad5472364b9075df332a0caef358f86563e4369b59390f9a698f880eedc21734. Chain 2 (Bitcoin): anchored in block 953778 (2026-06-15T11:57:35Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/b1effd0e-6c53-474f-b4f1-9808187188b0.json and https://artists.proofprofile.net/proofs/artist/b1effd0e-6c53-474f-b4f1-9808187188b0.ots, the client at https://opentimestamps.org runs `ots verify -f record.json proof.ots`.
St. Louis Breakdown - The Best of Oliver Sain