thumb|upright=0.9|Grotesque studies, Michelangelo. Grotesque is an adjective often used to describe weird shapes and distorted forms such as Halloween masks. In art, performance, and literature, howev
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 0x2a53763a5e6c5e3e18acf0b89892819ed7d99a3d63a59ca1b878229e5430490c. Chain 2 (Bitcoin): anchored in block 953630 (2026-06-14T12:06:27Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/315e1f73-3836-43b5-bb24-6652fabfa4db.json and https://artists.proofprofile.net/proofs/artist/315e1f73-3836-43b5-bb24-6652fabfa4db.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).