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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e5c68263bbd1480903a07ad73846b042e0ce961e2d13ea1c454d77d4851e41d. Chain 2 (Bitcoin): anchored in block 954066 (2026-06-17T08:11:48Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/70e76356-a944-41c3-abca-9c85315ea7a4.json and https://artists.proofprofile.net/proofs/artist/70e76356-a944-41c3-abca-9c85315ea7a4.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Michael Nyman Yamamoto Perpetuo for Solo Flute
Chasing Sheep Is Best Left To Shepherds - Michael Nyman
Extracts from Handel's Messiah for Flutes
Original Melodies for Flute, Fretless Bass and Percussion