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 0x9de9207e1022ff09673e1324bb09195d5c2f85d8d4e9ce9770e682648559fdc5. Chain 2 (Bitcoin): anchored in block 953886 (2026-06-16T04:37:45Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/0b0cb4b2-9bc6-4cb6-8fae-464b683d4022.json and https://artists.proofprofile.net/proofs/artist/0b0cb4b2-9bc6-4cb6-8fae-464b683d4022.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Gott, du kannst ein Arsch sein! - Hörspiel