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 entity was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xffc931a3387e8452006411fbee2ee12642707e0d6ebf2e88d6264fc4ba40f1f0. Chain 2 (Bitcoin): anchored in block 954015 (2026-06-16T22:55:46Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/34cc3bce-e80f-4720-a0a0-bc6adcc304a4.json and https://artists.proofprofile.net/proofs/artist/34cc3bce-e80f-4720-a0a0-bc6adcc304a4.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
The Mikado, Act II: On a tree by a river, "Willow titwillow" (Ko-Ko)
Sullivan: Mikado (The) (D'Oyly Carte) (1950)
The Gondoliers: In Enterprise Of Martial Kind
Highlights From The Gondoliers & Iolanthe, Pt. 1
Ruddigore: Overture (composed by Geoffrey Toye)
Sullivan: Ruddigore (D'Oyly Carte) (1950)
Ruddigore: Act I: Fair is Rose as bright May day (Chorus, Zorah)
Ruddigore: Act I: Sir Rupert Murgatroyd (Dame Hannah, Chorus)
Ruddigore: Act I: If somebody there chanced to be (Rose)
Ruddigore: Act I: I know a youth who loves a little maid (Robin, Rose)
Ruddigore: Act I: From the briny sea - Ballad: I shipped d'ye see (Chorus, Richard)
Ruddigore: Act I: My boy, you may take it from me (Robin)
Ruddigore: Act I: If well his suit has sped (Chorus)
Ruddigore: Act I: In sailing o'er life's ocean wide - My heart says (Chorus, Richard, Robin, Rose, Ensemble)
Ruddigore: Act I: Cheerily carols the lark - To a garden full of posies (Margaret)
Ruddigore: Act I: Welcome, gentry, for your entry (Chorus)
Ruddigore: Act I: Oh why am I moody and sad? (Sir Despard)
Ruddigore: Act I: You understand? I think I do (Sir Despard, Richard)
Ruddigore: Act I: Hail the bride of seventeen Summers (Chorus)
Ruddigore: Act I: When the bands are blossoming (Rose, Hannah, Ensemble)