1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → block must exist at that height 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 artist was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c75b2cfdb432862a2c0bca193415812e1e4c545983ce2c24882cbcbeef4342c. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/c01c124d-f7ac-4390-91a1-333eb47bd3e1.json and https://artists.proofprofile.net/proofs/artist/c01c124d-f7ac-4390-91a1-333eb47bd3e1.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Cultist Simulator (Original Game Soundtrack)
History Is Less Certain Than We Are Taught
Book of Hours (Original Game Soundtrack)