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 0x7b4ed3d0a6e407d0af48248176a0613f6e7bebac5a64dfb093c2d2aff2c13340. Chain 2 (Bitcoin): anchored in block 953842 (2026-06-15T22:22:30Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/e67c0270-f3b5-4941-8f22-021ed3dc306f.json and https://artists.proofprofile.net/proofs/artist/e67c0270-f3b5-4941-8f22-021ed3dc306f.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
君との約束 feat. USU aka SQUEZ pro by DJ CHELSEE
Hello Mr. Santa Claus (feat. MIKU a.k.a. tomboy)