I Know may refer to: Music Albums I Know (Luther Vandross album) or the title song (see below), 1998 I Know (Tone Damli album) or the title song (see below), 2009 I Know, by John Gorka, 1987 I Kn
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 0x6900cf9899bcb617cf440a6fa8a1d0df11ca6dab37efeecb2d4e15382d02d212. Chain 2 (Bitcoin): anchored in block 954065 (2026-06-17T08:10:43Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/3f630252-a51b-49f0-8088-6adec217aa5d.json and https://artists.proofprofile.net/proofs/artist/3f630252-a51b-49f0-8088-6adec217aa5d.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).