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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e5c5315ba71bb67fd403cd7c37f027f4cd5d76d03aa2d38559ad81bae38fbf2. Chain 2 (Bitcoin): anchored in block 954573 (2026-06-20T15:45:29Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/b4f4ef82-6da2-4547-a09b-7dc7e70562ab.json and https://artists.proofprofile.net/proofs/artist/b4f4ef82-6da2-4547-a09b-7dc7e70562ab.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Moonlit Melodies (DMCA / Copyright Free Music)
Summer Vibes (DMCA / Copyright Free Stream Music)
Disco Dreamland (DMCA / Copyright Free Music)
Holiday Magic (DMCA / Copyright Free Christmas Music)
Love Letter (DMCA / Copyright Free Romantic Music)
Enchanted (DMCA / Copyright Free Fantasy Music)