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 0xc12116da325cf34c61b9418260c74cd0136f09bb41d65ecbf6d3f7b1b655d277. Chain 2 (Bitcoin): anchored in block 954647 (2026-06-21T04:36:58Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/d5edca5a-a4b4-45ba-8703-03b8e58bca01.json and https://artists.proofprofile.net/proofs/artist/d5edca5a-a4b4-45ba-8703-03b8e58bca01.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Putty's Pride (Original Documentary Soundtrack)
A Play About Ivy, that is really About June (Original Soundtrack)
fifteen (Original Motion Picture Soundtrack)
Grief Of A Woman (Original Motion Picture Soundtrack)
Woolrich Town (Original Motion Picture Soundtrack)