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 0x1be9c5988064f399b025c47cb5db2afdeb5f1cfe2a9ab87d3a703e8342fb151f. Chain 2 (Bitcoin): anchored in block 954784 (2026-06-22T02:53:59Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/f5015ca4-b104-4902-80eb-50f9bcd8619e.json and https://artists.proofprofile.net/proofs/artist/f5015ca4-b104-4902-80eb-50f9bcd8619e.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Revisiting.....! (Recensito da Edoardo Bennato, Alex Britti, Roberto Ciotti)