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 0xc45d0e9162cbd1bc1ad47b8e607a9b53eeb888cbf3ee3c83a7133924a22812d1. Chain 2 (Bitcoin): anchored in block 953907 (2026-06-16T07:39:24Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/17bc4e8e-187e-4da7-a642-66709b7f6489.json and https://artists.proofprofile.net/proofs/artist/17bc4e8e-187e-4da7-a642-66709b7f6489.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Latin Big Band - Ambiance for New Recipes
Groovy Music for End of Winter - Trumpet and Alto Sax
Music for Chilling in March (Trumpet and Alto Sax)
Jazz Quartet - Bgm for Study and Summers
Music for Virtual Atmospheres - Paradise Like Jazz Guitar Solo