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 0xca2e8522aa3ff31afc88345a78943915d0fa35f33e8bd09aefbbc0a12a6abae3. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/d1df7ab8-c56a-4f6d-b129-d982c841c8c1.json and https://artists.proofprofile.net/proofs/artist/d1df7ab8-c56a-4f6d-b129-d982c841c8c1.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Water Is Wide ( Traditional British Isles )
Little bird's tale (feat. ビューティフルハミングバード)
Toumei na Nukumori (feat. Risa Nakagawa)
Shinkai ni furu yuki (feat. Gen-Gaku duo)