thumb|A drawing of a luxury hourglass corset from 1878, featuring a busk fastening at the front and lacing at the back A corset () is a support garment worn to constrict the torso into the desired sh
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 0x6aabdeaa7c40482cf0416e36429f37dc68e62f478e7aaf5adddfb12bc3d2553a. 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/5597da08-0c18-4f84-be21-032d8f1ca784.json and https://artists.proofprofile.net/proofs/artist/5597da08-0c18-4f84-be21-032d8f1ca784.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).