thumb|Fountain of the Fallen Angel (1877), by Ricardo Bellver. Retiro Park, Madrid. Fallen angels are angels who were expelled from Heaven. The literal term "fallen angel" does not appear in any Abrah
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 0xdb42de9b057cc00eb9810ab70797a401c99eb9f8d2d9840286e24115587fee3a. Chain 2 (Bitcoin): anchored in block 954693 (2026-06-21T11:50:32Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/e7671e34-8023-4e95-bcb4-73ab6fdfe02a.json and https://artists.proofprofile.net/proofs/artist/e7671e34-8023-4e95-bcb4-73ab6fdfe02a.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).