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 0x1a99cc7224215ebd6404c0cdd25b4262de44be3f5f0fbf559601e31b94e6c4d3. Chain 2 (Bitcoin): anchored in block 954019 (2026-06-16T23:44:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/360973f9-a2c0-4fe1-8974-f252bbffa753.json and https://artists.proofprofile.net/proofs/artist/360973f9-a2c0-4fe1-8974-f252bbffa753.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Heart of Pandaria (From "World of Warcraft")
The Rest of My Life (From "The Amazing Spider-Man 2")
Baka Mitai (From "Yakuza 0") [Slowed & Reverb]