The holly blue (Celastrina argiolus) Retrieved April 20, 2018. is a butterfly that belongs to the lycaenids or blues family and is native to the Palearctic. Description thumb|140px|left|Figs 1, 1a, 1
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 0x755208e87646327e5ae4460bc951a20ee39cdbc3bd436ee5049492f2b78de128. Chain 2 (Bitcoin): anchored in block 953997 (2026-06-16T20:07:57Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/2cc1fd17-5d94-48ae-8ed7-ec27a5cf12aa.json and https://artists.proofprofile.net/proofs/artist/2cc1fd17-5d94-48ae-8ed7-ec27a5cf12aa.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).