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 0x35a45f429ab64a81f55e315525c672cdd9273318fc0e39dbd6286e2e017bfe85. Chain 2 (Bitcoin): anchored in block 953727 (2026-06-15T02:33:01Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/8e88c71e-5d39-4000-9ec8-aac8fa64d488.json and https://artists.proofprofile.net/proofs/artist/8e88c71e-5d39-4000-9ec8-aac8fa64d488.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Bradwood Studios (ungekürzt) [Eloise & Chase]
Wenn der Wind die Stille zerbricht (Roman)