right|thumb|220px|Wild angelica (Angelica sylvestris) from Thomé, 1885 Angelica is a genus of about 90 species of tall biennial and perennial herbs in the family Apiaceae, native to temperate and sub
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 0xea5e99767d4316ef97e45186c899a4f7f61fa0b136b074ac0114e71ef246ac40. Chain 2 (Bitcoin): anchored in block 953889 (2026-06-16T04:57:45Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/0e5ffe4d-f10b-4e85-bdbf-0e1511434050.json and https://artists.proofprofile.net/proofs/artist/0e5ffe4d-f10b-4e85-bdbf-0e1511434050.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).