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 0x88141654131b1532754786d0dbde9472415199fca2857672963dafe9c59ac012. Chain 2 (Bitcoin): anchored in block 954516 (2026-06-20T07:04:44Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/9fe91a9b-c57d-4b40-a91f-8bb2c4edf1dc.json and https://artists.proofprofile.net/proofs/artist/9fe91a9b-c57d-4b40-a91f-8bb2c4edf1dc.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
The Musical Tracing Ensemble (They Didn't Know What They Were About To Play)
Museums, Televisions, Computer Screens, Podcasts, and Movies, Vol. 2
Museums, Televisions, Computer Screens, Podcasts, and Movies, Vol. 1
Ranchera '22 (Synthesizer Interpretations of the Songs of José Alfredo Jiménez)
Nutcrackers (Original Motion Picture Score)
Hoagie (Original Motion Picture Soundtrack)