Richard Van Allan CBE (28 May 1935 – 4 December 2008) was a versatile British operatic bass singer who had a lengthy career. He sang varied repertoire at Covent Garden and English National Opera, as
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 0x63727cad3cd36eecc0b475ae73df4acbaa9dd76fa9bd5a5a8196d78594eac522. 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/b7953b10-cc97-4bd6-abcf-e08740419b70.json and https://artists.proofprofile.net/proofs/artist/b7953b10-cc97-4bd6-abcf-e08740419b70.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
H.M.S. Pinafore, Act I: Introduction and Opening Chorus. We Sail the Ocean Blue
1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 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. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x809868ec84d8b0609f17d4135fa6b84055d7cfc0fe339d8025bb3d154305ea7c. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USTE10705374.
H.M.S. Pinafore, Act I: Recitative and Aria. I'm Called Little Buttercup
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa210380b8fda06c4ddcd268ce7217b38177a98440cd2c3c44b39e38846114e09. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USTE10706374.
H.M.S. Pinafore, Act I: Madrigal. The Nightingale
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe374761c83fbb75fdd7a6f6d35077664b46a0ceeb195b897b29657539e1c680a. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USTE10708374.
H.M.S. Pinafore, Act I: Ballad. A Maiden Fair to See
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0632271e84d4521bdb0d29aa93ed1936667b1713c3e42189aaababf751dbbeb. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USTE10709374.
H.M.S. Pinafore, Act I: Ballad. Sorry Her Lot
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10e79845ba37141ec6781f75914b5c3877425a4b9c0501a9e2e37ed21b170f6c. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USTE10712374.
H.M.S. Pinafore, Act I: Sir Joseph's Barge is Seen
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73111fa63ed3d854c42f74e7ce9cad9ba22207c6c4edd928e735335a1cb2321e. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USTE10714374.
H.M.S. Pinafore, Act I: Glee. A British Tar
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76e180a166f83e5c51fcf44d0fc9cf508df97550852954224207f618db912af5. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USTE10718374.
H.M.S. Pinafore, Act I: Finale. Can I Survive This Overbearing?
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9831d1541f8086cecb2b577ea8b6bf158c89e4d3d5daced77f492e6a13f3b52d. Chain 2 (Bitcoin): anchored in block 957020 (2026-07-07T09:18:01Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USTE10720374.
H.M.S. Pinafore, Act II: Duet. Things Are Seldom What They Seem
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb24323db967e99b3b78388a6c96818e9303360aa05504f0d548a67b89b4936b7. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USTE10723374.
H.M.S. Pinafore, Act II: Soli and Chorus. Carefully on Tiptoe Stealing
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2b1b0b70cd5c50df33aff0285692d4dfff62f5fa179d18dd69ce90e296a02c7. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USTE10727374.
H.M.S. Pinafore, Act II: Finale. O Joy, Oh Rapture Unforeseen!
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e06b78261a54413b41dfe86e84ec5c11b98b2a1d6647250efe6790e6c376bd2. Chain 2 (Bitcoin): anchored in block 960302 (2026-07-30T20:09:33Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USTE10730374.
1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 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. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Gilbert & Sullivan: The Pirates of Penzance
The Pirates of Penzance, Act I: Opening Chorus of Pirates and Solo. Pour, Oh Pour, the Pirate Sherry
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb11486a05475c0ff333ce4785a19fe74f9a308d885a1da84d0a1147710239200. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USTE10701353.
The Pirates of Penzance, Act I: Song. Oh! Is There Not One Maiden Breast
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3cc2c311ae9f03022b7da1da518686a6e2927611b3808178363a29778e6d559. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USTE10707353.
The Pirates of Penzance, Act I: Finale. Oh! Men of Dark and Dismal Fate
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xffe9566ea75ec66e8daafdb13905bed259400f948ffbe6ca2f9eb97ab1da15be. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USTE10714353.
The Pirates of Penzance, Act II: Introduction and Solo. Oh! Dry the Glist'ning Tear
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b035396b0c73cc50dfc6d13b468504c4c48760042b739d330ee1d03e366f8b0. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USTE10715353.
The Pirates of Penzance, Act II: Chorus with Solos. When the Foeman Bares His Steel
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0cbb9015c5dfb17d5f07981806ff189bddafa7a1c1b7bc28a56ef8ad71537ca9. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USTE10717353.
The Pirates of Penzance, Act II: Solo. With Cat-Like Tread
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c1d28aa9b34527d23e4d9561c00cf75b8b38139bd242d72ab1c717ae51159d0. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USTE10726353.
The Pirates of Penzance, Act II: Recitative. No, I'll Be Brave! Oh, Family Descent
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdce4bedef587f61c090490adc9888af444cb07d45755560b436d40aa1225c4c3. Chain 2 (Bitcoin): anchored in block 960429 (2026-07-31T16:07:24Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USTE10723353.
The Pirates of Penzance, Act II: Song. When a Felon's Not Engaged in His Employment
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b07fb5a9ed9d690f2bdd2b050b7d5ae46f444ae7680fb7ff6183867d2bf3409. Chain 2 (Bitcoin): anchored in block 960344 (2026-07-31T04:14:58Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USTE10724353.
The Pirates of Penzance, Act 2: Song and Finale. Sighing Softly to the River
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb63b72bf92d98e71ce9d265b3fea0b6fec67d1fd2572f67708e77308e8b92c1d. Chain 2 (Bitcoin): anchored in block 960427 (2026-07-31T15:59:18Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USTE10728353.
La traviata, Act I: Libiamo ne' lieti calici (Alfredo, Violetta)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b3387b1a1a89472ae46c26568a52dec7b58ca4ea07b54cc15f7346c9e39de05. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBAYC8000072.
Verdi: La traviata, Act 2: "Alfredo! Voi! (Flora, Alfredo, Gastone, Dottore, Marchese, Chorus, Violetta, Barone)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e9c8489087c7a44c453451ef751719d739bf309f7aadeb3d51357f35dc4978b. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBAYC8000110.
Verdi: La traviata, Act 2: "Di sprezzo degno sé stesso rende" (Germont , Alfredo, Barone, Others, Except Violetta)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x408a7a31e6a2f092fc7277e80450b31126bec8ccfd3887bd8a14fd61f1d94714. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBAYC8000113.
Hugh the Drover, Act I: Pt. 7. Show Me a Richer Man in All This Town
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x774827e0afad109d1741d65ed145de29d4bfae817da38a3bd916902588fe7a4e. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBAJY9490107.
Hugh the Drover, Act I: Pt. 18. Who'll Fight? A Fight! Who's for a Fight?
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3bb34197ce27addb8d22c91ec0e4e2ae994e160ce7ea077c16bc3ca23c1ba40. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBAJY9490118.
Verdi: La traviata, Act 1: "Dell’invito trascorsa è già l’ora" (Chorus, Violetta, Flora, Marchese, Gastone, Alfredo, Barone)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd74a1a56b4b320534ba9243a2f179f716707ee7a1210c605bf6756b52d28dcd. Chain 2 (Bitcoin): anchored in block 960254 (2026-07-30T12:06:10Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBAYC8000071.
Verdi: La traviata, Act 2: "Noi siamo zingarelle (Coro, Flora, Marchese)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x762e8a3f5946f08581d2069f94585c87364b29c69f10a5e969d2ced2e9105bc4. Chain 2 (Bitcoin): anchored in block 960321 (2026-07-30T22:27:30Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBAYC8000108.
Verdi: La traviata, Act 2: "Di Madride noi siam mattadori" (Gastone, Matadors, All Others)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea8d01fca60bef5accb1a3355508202d607cf3b6bdd2773315f3389e84fc4b88. Chain 2 (Bitcoin): anchored in block 960368 (2026-07-31T08:26:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBAYC8000109.
Verdi: La traviata, Act 2: "Avrem lieta di maschere" (Flora, Marchese, Dottore)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18030f46d3b7a3aa86a9e928cb421aa1ee2d0a572aa0730f39e9842c4c711bb2. Chain 2 (Bitcoin): anchored in block 960448 (2026-07-31T18:48:12Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBAYC8000107.
Verdi: La traviata, Act 2: "Alfredo, Alfredo, di questo core" (Violetta, All Others)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ffdd4b9ea1a42eb316b0541618b3dc452771dfb4ef854ff16d8face8da3e913. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBAYC8000114.