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 entity was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9afcd744e2fcab2cf41267ad695804609d77fab523f8a083296fb7c0f666f90. 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/2cb80a01-793a-4088-a515-4a9377ee78f0.json and https://artists.proofprofile.net/proofs/artist/2cb80a01-793a-4088-a515-4a9377ee78f0.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
ART-SCHOOL 25th Anniversary Tribute Album『Dreams Never End』