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 0x1d62d398e0e38b3fd1e393da7ec2f58993efa1dc55183128be0a11428b0d6510. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/551c6cff-d224-4c9f-9eeb-2f4eaad67d7e.json and https://artists.proofprofile.net/proofs/artist/551c6cff-d224-4c9f-9eeb-2f4eaad67d7e.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
On the Twentieth Century (Original Broadway Cast Recording)
On the Twentieth Century: Medley: Stranded Again / Saddle Up the Horse / On the Twentieth Century
On the Twentieth Century: I Have Written a Play
On the Twentieth Century: Our Private World
On the Twentieth Century: I've Got It All
On the Twentieth Century: On the Twentieth Century (Reprise 1)
On the Twentieth Century: Entr'acte: Life Is Like a Train
On the Twentieth Century: On the Twentieth Century (Reprise 2)
Urinetown The Musical (Original Broadway Cast Recording)
Sweet Bye and Bye (World Premiere Recording)
The Only Other Broadway Collection You'll Ever Need
(I Wonder Why) You're Just In Love (from Call Me Madam)
They Call The Wind Maria (from Paint Your Wagon)
My Favorite Things (from The Sound of Music)
Grand Old Ivy (from How To Succeed In Business Without Really Trying)
On A Clear Day (You Can See Forever) (from On A Clear Day You Can See Forever)
Happiness (from You're A Good Man, Charlie Brown)
You're a Good Man, Charlie Brown Ensemble (1999)
Waiting for the Girls Upstairs (from Follies)
Send In The Clowns (from A Little Night Music)
Song on the Sand (La Da Da Da) (from La Cage aux Folles)
Original Broadway Cast of La Cage Aux Folles
We Do Not Belong Together (from Sunday in the Park With George)
Music Of The Night (From Phantom Of The Opera)
110 in the Shade: The 2007 Broadway Revival
Camelot (Original Broadway Cast Recording)
Camelot: I Wonder What the King Is Doing Tonight
Camelot: Then You May Take Me to the Fair
Dr. Seuss' How The Grinch Stole Christmas! The Musical
Dr. Seuss' How the Grinch Stole Christmas Ensemble
Dr. Seuss' How the Grinch Stole Christmas Orchestra
On A Clear Day You Can See Forever (Original Broadway Cast Recording)
On a Clear Day You Can See Forever Ensemble
On a Clear Day You Can See Forever Orchestra
The Scottsboro Boys (Original Off Broadway Cast Recording)
Androcles and the Lion (Original Television Cast)
A Fine Young Man / Strength Is My Weakness
Original Television Cast of Androcles and the Lion