1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → block must exist at that height 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 artist was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa087d5a6e349e56b066e25acf66ca82aacfb8b817bae874a560ece04db9dfcbe. Chain 2 (Bitcoin): anchored in block 953827 (2026-06-15T19:59:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/fe8bd175-0abe-4231-9bfd-ac1abad115b0.json and https://artists.proofprofile.net/proofs/artist/fe8bd175-0abe-4231-9bfd-ac1abad115b0.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Patty Duke Sings Songs From The Valley Of The Dolls & Other Selections
Dona Dona (Live On The Ed Sullivan Show, April 21, 1968)
Dona Dona - Live On The Ed Sullivan Show, April 21, 1968
Theme To The Patty Duke Show (Season 1 Open)
Theme To The Patty Duke Show (Season 2 Close)
Theme To The Patty Duke Show (Season 1 Close)
Theme To The Patty Duke Show (Season 2 Open)
Patty Duke Sings Folk Songs - Time To Move On
パティ・デュークズ・グレイテスト・ヒッツ
And We Were Strangers (Live On The Ed Sullivan Show, April 21, 1968)
And We Were Strangers - Live On The Ed Sullivan Show, April 21, 1968