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 0x635ce2f6da8a0bd31bca1335a816e301f44d4392ae2bc732b62151e5c9e14772. Chain 2 (Bitcoin): anchored in block 954342 (2026-06-19T03:22:39Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/835aae8d-b529-485d-9a4d-d29dd26e2c01.json and https://artists.proofprofile.net/proofs/artist/835aae8d-b529-485d-9a4d-d29dd26e2c01.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
The Christmas World Of Tony Sandler & Ralph Young
Great Gentlemen Of Song / Spotlight On Sandler & Young
If You Knew Susie/Three O'Clock In The Morning/Charade (Medley/Live On The Ed Sullivan Show, September 19, 1965)
Harmonize/Sweet Adeline/Down By The Old Mill Stream (Medley/Live On The Ed Sullivan Show, January 7, 1968)
Monsieur Boum-Boum (Mr. Bassman) [Live On The Ed Sullivan Show, September 19, 1965]
Dominique/Deep River/Swing Low, Sweet Chariot (Medley/Live On The Ed Sullivan Show, September 19, 1965)