The Closer is an American police procedural television series starring Kyra Sedgwick as Brenda Leigh Johnson, a Los Angeles Police Department deputy chief. A CIA-trained interrogator originally from A
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 0x3c5a69e86c7e4ea5da8ea302163cb9d2b47b7aae96d097e2f7fabc9e379e58d7. Chain 2 (Bitcoin): anchored in block 954549 (2026-06-20T10:56:20Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/aa0ef44a-c449-4dd0-bcc8-14213141c4b1.json and https://artists.proofprofile.net/proofs/artist/aa0ef44a-c449-4dd0-bcc8-14213141c4b1.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).