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 0x5a30475365924fba41714296ddf85aba8a62ac10991742455b020a992d9cef53. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/ed3e1549-200b-431e-b2f9-ee6d9caa8c62.json and https://artists.proofprofile.net/proofs/artist/ed3e1549-200b-431e-b2f9-ee6d9caa8c62.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Utamonogatari Special Edition (Original Soundtrack)