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 0xf23e49a5c1b78eb10ae26cc567e127c0e92f6aaf6e2a9554303b356ce5dbaf89. Chain 2 (Bitcoin): anchored in block 954342 (2026-06-19T03:22:39Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/8e3d88a6-baa4-4d84-b0cb-3baa65df7f53.json and https://artists.proofprofile.net/proofs/artist/8e3d88a6-baa4-4d84-b0cb-3baa65df7f53.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
The Boy Who Dreamed of Lightning (Original Motion Picture Soundtrack)
Kontapati (Original Motion Picture Soundtrack)
Belajarlah (Original Soundtrack from "Akibat Internet Bebas")
Are We Still Friends? (Original Motion Picture Soundtrack)
Pangkas Rambut Nugroho (Original Motion Picture Soundtrack)