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 0x037c419ef82685e7327c61a60f7d41d70c2103707aceb805f52a6f52bdddd379. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/cb821fc5-ae10-465a-97b4-155d4946b204.json and https://artists.proofprofile.net/proofs/artist/cb821fc5-ae10-465a-97b4-155d4946b204.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
New Year's Eve (Back at the House on Sunset)
Eternal Youth Is Worth a Little Suffering
Song on the Sand (Reprise) (From La Cage Aux Folles)
The House of Marcus Lycus (from "A Funny Thing Happened on the Way to the Forum")
With So Little To Be Sure Of (from "Anyone Can Whistle")
Waiting for the Girls Upstairs (from Follies)
The Only Other Broadway Collection You'll Ever Need
Original Broadway Cast of La Cage Aux Folles
Send in the Clowns: The Ballads of Stephen Sondheim
Original Broadway Cast Of Sunset Boulevard
Sunset Boulevard (Original Broadway Cast)
There's Been A Call / Journey To Paramount
Paramount Conversations/Surrender (Reprise)
Follies (New York Philharmonic Concert Cast Recording (1985))