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 0x9020b5683be3bd16311b0488742db04ef1129014f76e9f32cf464570b7979767. Chain 2 (Bitcoin): anchored in block 954342 (2026-06-19T03:22:39Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/8368b99b-71a2-4edb-bc6a-d7025fb3f174.json and https://artists.proofprofile.net/proofs/artist/8368b99b-71a2-4edb-bc6a-d7025fb3f174.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Always Remember Us This Way (from A Star Is Born) [Instrumental]
City of Stars (From "La La Land") [Instrumental]
I'll Never Love Again (From "A Star Is Born") [Instrumental]
Sunflower (From "Sierra Burgess Is A Loser") [Instrumental]