thumb |right|Inglenook in the Blue Bedroom of Stan Hywet Hall, Summit County, Ohio An inglenook or chimney corner is a recess that adjoins a fireplace. The term "inglenook" comes from "", an old Scot
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 0xb9d9d5f2894f8c4d88e49e33e8e38ffbf167d61fa5e8f6d1fd449f015044a413. 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/8c773d8c-861e-42f0-bade-837f66da065c.json and https://artists.proofprofile.net/proofs/artist/8c773d8c-861e-42f0-bade-837f66da065c.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).