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 0xa224f88d12db42389cc7f7f444313b258e263f182f24e9e3eb34eba03a3ef752. 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/1cc0c8fd-49d7-4585-85a7-2ccbb0aaa6e4.json and https://artists.proofprofile.net/proofs/artist/1cc0c8fd-49d7-4585-85a7-2ccbb0aaa6e4.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Touch all the right spots (Jersey remix)