Club Seven is an American television variety series that was broadcast on ABC. The initial series, with 30-minute episodes, ran from August 12, 1948, through March 17, 1949. It was revived on Septembe
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 0x033d559c9978a4ec1cc3f9c988f59cbcff30a1ff4c880dbf74df8ba0f297a08b. Chain 2 (Bitcoin): anchored in block 953949 (2026-06-16T13:28:01Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/20aa0954-cdc2-4357-a8b4-31ca160c7e57.json and https://artists.proofprofile.net/proofs/artist/20aa0954-cdc2-4357-a8b4-31ca160c7e57.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).