Cecil Hotel or Hotel Cecil may refer to: Australia Hotel Cecil, North Ipswich, Queensland Hotel Cecil (Southport), Queensland Egypt Cecil Hotel (Alexandria) India The Cecil, Shimla Morocco Ho
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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf98e51bff5d7d237cd15123e0eb8782edde12cd1fb2eb3f34aedec9cd992d0ab. 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/4b85f74b-cb5e-46cb-bd54-0ab77e07ca42.json and https://artists.proofprofile.net/proofs/artist/4b85f74b-cb5e-46cb-bd54-0ab77e07ca42.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).