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 0x8fe7c05f632902da4a03db96c5d6f96fa105b94018d8c90d67dd9044ea134e68. Chain 2 (Bitcoin): anchored in block 954705 (2026-06-21T13:42:37Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/f0a1e1a0-1175-4885-a71f-f30d6a8fe79c.json and https://artists.proofprofile.net/proofs/artist/f0a1e1a0-1175-4885-a71f-f30d6a8fe79c.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Broadcast Music Library (Broadcast, Home Shopping, Video Background Music BGM) Vol.01
Broadcast Music Library (Broadcast, Home Shopping, Video Background Music BGM) Vol. 02