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 0xbd6feff45901f5bf5f559c6ba475c5c714ee98a620a549b0cbba0362512d5f4a. Chain 2 (Bitcoin): anchored in block 953877 (2026-06-16T02:39:16Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/007f2ee9-b03d-4144-95ca-a765318ae83e.json and https://artists.proofprofile.net/proofs/artist/007f2ee9-b03d-4144-95ca-a765318ae83e.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Roc Is Still Alive (Live From The Basement)
Let It Go the Things You Can't Control (Remix)
Unplugged in the Hills (Original Motion Picture Soundtrack)