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 0xe6ca574622c88d5e3980c77d4dc36a55a1b6b3746fcc8eccb849e4499f495ffe. Chain 2 (Bitcoin): anchored in block 954650 (2026-06-21T04:51:12Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/d9af71f8-32fa-467e-afb2-3bf0fa952bb3.json and https://artists.proofprofile.net/proofs/artist/d9af71f8-32fa-467e-afb2-3bf0fa952bb3.ots, the client at https://opentimestamps.org runs `ots verify -f record.json proof.ots`.
Rose Colored Glasses (The Voice Performance)
Key to the Highway (The Voice Performance)
All My Ex’s Live In Texas (The Voice Performance)
The Season 20 Collection (The Voice Performance)