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 0x8e1d5c389eb136acd4db181a9a193c7ff1a977dfcb466edd70d0f3e7b660607b. Chain 2 (Bitcoin): anchored in block 954066 (2026-06-17T08:11:48Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/6f97ec4d-5fc5-41f7-86c0-0268531edb42.json and https://artists.proofprofile.net/proofs/artist/6f97ec4d-5fc5-41f7-86c0-0268531edb42.ots, the client at https://opentimestamps.org runs `ots verify -f record.json proof.ots`.
You (feat. Far East Movement & Babylon) [Man to Man, Pt. 8 (Music from the Original TV Series)]
You (From "Man to Man", Pt. 8) (Original Television Soundtrack)