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 0x272217a51f871623b3e706775b2092ad587d34a67a83b372159b3fc42dc223ce. Chain 2 (Bitcoin): anchored in block 954631 (2026-06-21T02:46:24Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/d10588d4-69ac-4945-bf3c-ed3ab29020fd.json and https://artists.proofprofile.net/proofs/artist/d10588d4-69ac-4945-bf3c-ed3ab29020fd.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
The Last Show of Mr. Chardish (Original Game Soundtrack)
The Thaumaturge (Original Game Soundtrack)