thumb|200px|John Knowles Paine John Knowles Paine (January 9, 1839 – April 25, 1906) was the first American-born composer to achieve fame for large-scale orchestral music. The senior member of a grou
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 0xb0bf910a179df77f9aaa322e58b592e09f46ce9ba9130e591d8f590d371930e8. Chain 2 (Bitcoin): anchored in block 954553 (2026-06-20T11:51:30Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/ac2fe979-f353-4984-9717-a2d52acf5059.json and https://artists.proofprofile.net/proofs/artist/ac2fe979-f353-4984-9717-a2d52acf5059.ots, the client at https://opentimestamps.org runs `ots verify -f record.json proof.ots`.
Paine: Symphony No. 1, As You Like it Overture & The Tempest