The Union Jack or Union Flag is the national flag of the United Kingdom. The flag is an overlay of the cross of Saint George (the patron saint of England), edged in white, superimposed on the red sal
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 0x918bd6cc5e5bf6642e1b9e0f11f9f35256a4304c39ad85de3daf1f925a34d606. Chain 2 (Bitcoin): anchored in block 954342 (2026-06-19T03:22:39Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/89df3d51-abb7-4ea4-a534-a13e55ad9233.json and https://artists.proofprofile.net/proofs/artist/89df3d51-abb7-4ea4-a534-a13e55ad9233.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).