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 0x9cd358a1ea9824f271f6b31790c97c24fdf5715fe5e33234aeef64dbb7df7130. Chain 2 (Bitcoin): anchored in block 954593 (2026-06-20T19:46:01Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/bde8bc04-9d3d-4546-bf3c-bfc2565f08dc.json and https://artists.proofprofile.net/proofs/artist/bde8bc04-9d3d-4546-bf3c-bfc2565f08dc.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Rossini: Elisabetta, regina d'Inghilterra
Magi: Sinfonia a piena orchestra e banda / Angeloni: Miserere
Mariella Devia: La Morte di Didone e Arie di Baule
Borlenghi: Il Sacro Cammino & 2 Impressioni - Caltabiano: Visione di San Martino, Largo & Overture in F Major
Meyerbeer: L'esule di Granata (Highlights)
Paisiello: Due Contesse (Le) / Il Duello Comico
Catalani: Messa per soli, coro e orchestra
Italian Operatic Overtures, Vol. 1: The 18th Century
Martinia Franca Festival - 30th Anniversary
Strauss II, J: Wiener Blut (Vocal Version, Arr. Müller)
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 0x6e3ec9c98192bed022b9a06f3f1f9206ea825ef10904efea7e0c67cf04f8d4ff. 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/FRZ209806101.
Morricone : Cinema Paradiso : "Se tu fossi nei..."
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd05c9f663938ceb6cd20f6046deefc89241259953a14d9860b1e0077f185b2f7. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/GBELP0400271.
Handel: Semele, HWV 58, Act 2: Air. "Where'er your walk, cool gales shall fan the glade" (Jupiter)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e1a81674ae9bb49f785c0fa5d5f82cb6e896d7bc2467e05b90c91e741775cc1. 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/GBELP0500443.
Schubert: Ave Maria, Op. 52 No. 6, D. 839 (Orchestral Version)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb898920e3c0211d6109d01278daf4e36d02070c88c46746ce337e9275888b48b. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/FRZ200004160.
Johann Strauss II : Voices of Spring [Frühlingstimmen] Op.410
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a5565767b3f3fb4cf0caa96ed08b4b0640e6faa48f3857ed8aa2191d071f863. 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/FRZ209806108.
Handel: Rinaldo, HWV 7, Act 2: Aria. "Lascia ch'io pianga" (Almirena)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68cd5b7f6834ce0f915475ea69a05f3cb35cc98936bbf235e429eb78651bccd3. Chain 2 (Bitcoin): anchored in block 957075 (2026-07-07T18:50:38Z), 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/GBELP0500449.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ddd2f11dc88bfe59cc0f76b53b159c859aaee2f43b09c6f41dab3d237214cb3. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/FRZ209714150.
Gounod : Faust : Air des Bijoux [Marguerite]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8605c34bb0602d2cead641dda1aeca0288a7a5815d24c1dfe72962893799573. 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/FRZ209801420.
Handel: Messiah, HWV 56: Aria. "I Know That My Redeemer Liveth"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf835b4f28b6b5e768e13c7327d5350738dba29e3523761d38b667400be6440f9. 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/GBELP0500451.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95da7ce48743ca6774bcf1c66022ed2bc960ba16a6fb18b1dc08b73bb1c1f9a1. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/FRZ209714010.
Charpentier : Louise : Act 2 "Depuis le jour où je me suis donné" [Louise]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84afbf1c2aad9d904f3cb7f044d132c68e2d9cc58cdc0285f84432a5b2f76092. Chain 2 (Bitcoin): anchored in block 960273 (2026-07-30T15:42:38Z), 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/FRZ209801460.
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
Orfeo ed Euridice: Che farò senza Euridice?
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd33208d54efbb133cc287a84e28c470b5dea7f6c5b4df3e06b8151313fb0a169. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/USBC19602386.
The Barber of Seville, Act I Scene 1: Largo al factotum
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8d2904eef1916755182c044837c81b120b816c847befa36b051958983104ef0. 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/GBAYC9600384.
The Barber of Seville, Act I: Una voce poco fà (Rosina)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa20397e39a70ca71b17289985db09bd90ec97c55e0370bfdc67e5b9ec325fa1a. 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/GBAYC9601614.
The Barber of Seville: Overture (Overture)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7458ea173a35f1bc64c5cb916456744c8bc121258a762fcbf52799e6061dfc7b. 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/GBAYC9601601.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb40841ea5a37e5b7b6de11956a238ef809e573c4bf112c2bdb59c2723f7c8f71. 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/GBAYC8401427.
Hidden Gems of Italian 19th Century Opera (Opera italiana dell' ottocento, le perle rare)
The Barber of Seville, Act I: Cavatina, La ran le lerea ... Largo al factotum (Figaro)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ae14eea26dd255da478d0aa7a28ca67ca0c2c63e2e4988854a6be2a4e8e216c. 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/GBAYC9200973.
Il Barbiere di Siviglia, Act I: Una voce poco fà
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa20397e39a70ca71b17289985db09bd90ec97c55e0370bfdc67e5b9ec325fa1a. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/GBAYC9601614.
La donna è mobile - Die schönsten Verdi-Arien
Bellini: La sonnambula (First Autograph Version)