Gianni Poggi (October 4, 1921 – December 16, 1989) was an Italian tenor, particularly associated with the Italian repertory. Biography thumb|Gianni Poggi as Riccardo in Un ballo in maschera, Teatro
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 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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f796780fcae5e6a61a9a0091ae7bd2afc1e64adddcd438116e5605f3b891367. Chain 2 (Bitcoin): anchored in block 954342 (2026-06-19T03:22:39Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/8ce17fea-7117-41e5-b50e-9772796cd8b5.json and https://artists.proofprofile.net/proofs/artist/8ce17fea-7117-41e5-b50e-9772796cd8b5.ots, the client at https://opentimestamps.org runs `ots verify -f record.json proof.ots`.
Bastianini - A Life in Opera: Rossini, Donizetti, Ponchielli, Verdi
Un ballo in maschera: Alzati…Eri tu che macchiavi
Orchestra del Teatro Comunale di Firenze
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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd651975c586b105e4adf7e1c54bdd909ec4facb90f12cbcd24bfd33ff306408d. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USA370917907 — a six-check JSON result.
Orchestra and Chorus of the Opera in Milano
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6453feb384face2129d6b37d036b5cfa03755a1a0f1fa494e4b042e60b4c1c74. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ATP130358014 — a six-check JSON result.
Ponchielli: La Gioconda, Op. 9, Act 3: "Prodigio! Incanto!" (Coro)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x866534386ea99c83d721ae848d96d23bf909e1bff6562dfc206c4cf728e8a154. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBAYC2203399 — a six-check JSON result.
Ponchielli: La Gioconda, Op. 9, Act 3: Dance of the Hours
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2520d2182272341d88a75dc487c3edb94c7006aeb97295f5eba09e3d6e8b5aec. Chain 2 (Bitcoin): anchored in block 960459 (2026-07-31T20:22:46Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBAYC2203400 — a six-check JSON result.
Orchestra del Maggio Musicale Fiorentino
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c29dadc8103da7baf83fdf0839b109e290cedf4a393c9eb94235d32db784dff. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEF056131303 — a six-check JSON result.
La Bohème / Act 1: "Sì. Mi chiamano Mimì"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44e837ac6482519afd73b71d0e68b754f4c47f8cc2a381c048c0e9673b02d8f6. Chain 2 (Bitcoin): anchored in block 960220 (2026-07-30T07:28:30Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEF056131304 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8b7b73401e50ad3dfc27f3326751ca7eff8e01367a2dc296eedf19a1330cbbb. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEF056131305 — a six-check JSON result.
La Bohème / Act 4: O Mimì, tu più non torni
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e3f631df2642478cb1c2968c8f43d12f9e73d0f5f5bc0935818d486e23c0050. Chain 2 (Bitcoin): anchored in block 960455 (2026-07-31T19:53:13Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEF056131310 — a six-check JSON result.
La Bohème / Act 2: "Quando m'en vo'" (Musetta's Waltz)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x754bcb39498a96a7d8aa9cfe54a8aa55c5663e2715a8246e2ca1bf771b61b4c4. Chain 2 (Bitcoin): anchored in block 960150 (2026-07-29T21:51:49Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEF056131306 — a six-check JSON result.
La traviata / Act 3: "Parigi, o cara, noi lasceremo"
Orchestra dell'Accademia Nazionale di Santa Cecilia
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3869082d3d9d1c78e13a88ed02eedf8c146f2aafe12a04a846ab759a350c869a. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBF075440909 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe6c863b1921ed2fa87dd8e95d5ba200ad488dff9db54d75188bfd155b0f36ca. Chain 2 (Bitcoin): anchored in block 960264 (2026-07-30T14:36:16Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QM6N21452106 — a six-check JSON result.
Un ballo in maschera, Act I: Alla vita che t'arride
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0315c2fb801ce91d67c58368971e1d4a868d5ef6f4b004dc333179b90a0e446d. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QM6N21452109 — a six-check JSON result.
Un ballo in maschera, Act III: Eri tu, che macchiavi quell'anima
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x588c928434d619301eea4ad4e9be1d8302377ab9bf5eca20fc2a9cf08dc4057c. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QM6N21452124 — a six-check JSON result.
Un ballo in maschera, Act II: Ecco l'orrido campo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94518002156ac9ed1097b5a89d7b1b98d104a417a1b80c344ad478b0a0608519. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QM6N21452118 — a six-check JSON result.
Verdi: Un ballo in maschera (Stereo Version)
Verdi: Un ballo in maschera (Mono Version)
La Wally / Act 1: "Ebben? Ne andrò lontana"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43b4a43ab99f46b4078ad1a3ca7fca89715117aa754a5103ed94e9fc48d77f16. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBF076840709 — a six-check JSON result.
Adriana Lecouvreur / Act 1: "Ecco, respiro appena...Io son' l'umile ancella"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1ea1171e3d4167d11d68054970643d1663d5c1c38a4568264e5a74be49a5e69. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBF075510290 — a six-check JSON result.
Puccini: Les opéras - La discothèque idéale de Diapason, Vol. 10
100 Greatest Tenors, Vol. 3 (Recordings from 1941 to 1960)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa25ba8050eab6b4c3f787432120f27ce977e569d88dd7a8c480ba2758cbdd86. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBBBA5373511 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x407a58639f0ab38ec2f21b6fd83f6478a30fd98dbc5b859ff3f958350266eb5e. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBF076240708 — a six-check JSON result.
Tosca / Act 2: "Vissi d'arte, vissi d'amore"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2dfad49e49c6a512dd27a0158420b99fe26724577c3c353cb105448fdf0b39c8. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBF075910260 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9e1c2bfd6c5ff63b0bdf61ee77a176f6d2139a19c0c08e6fe334dfdbf738832. Chain 2 (Bitcoin): anchored in block 960403 (2026-07-31T13:04:34Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBF074910062 — a six-check JSON result.
La Wally / Act 3: Prendi, fanciul, e serbala!
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde7f988c0979129b2b65583ebe1d03b0d1d94d4fe152cf58c2d9329e85ba2066. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBF076840727 — a six-check JSON result.
La forza del destino - Act 1: Me pellegrina ed orfana
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb78835ec31afdae4e596be28a5214eabd001c1137bf905ae43e38fce457aba03. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBBBA5550590 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0ef5986f315ef69afb6527b6b7bf9bb293ea73c8fd01f9008db7c1aff5bb454. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBF076741028 — a six-check JSON result.
Adriana Lecouvreur - original version - Act 4: Fiori offerti in un'ora d'oblio...Poveri fiori
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb414e2ff4d274185530741ef337bcbf142e9893b37b4841b2c718c3e650df99a. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBBBA6150200 — a six-check JSON result.
Il Tabarro, Opera lirica in un atto - original version: Michele! Michele!...Avevo ben ragione...Si, vicina
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4b1896940a0e18a009f3dcd50f5af08cfffec163f10d1bab8fd12a3d9efffbb. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBBBA6250120 — a six-check JSON result.
La Bohème - Act 1: Sì. Mi chiamano Mimì...O soave fanciulla
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x861dda88c015366a8c776bfe97c3d7238ed7d05e059c71bd9aff134b79f6bc29. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBBBA5950260 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb83be1841e113b368e4d1d98b05dfb9b2ecb71e6c5aa2ae6a8b02439042ae21e. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBF076040519 — a six-check JSON result.
Ponchielli: La Gioconda (1952 - Votto) - Callas Remastered
Ponchielli: La Gioconda, Op. 9, Act 4: "Suicidio!" (Gioconda)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa764b6216b97087ab98ecd106e01ea1ffd341dae0d647a63810dd0f1a4138971. Chain 2 (Bitcoin): anchored in block 960441 (2026-07-31T17:29:52Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBAYC1400067 — a six-check JSON result.
Lebendige Vergangenheit - Gianni Poggi II
Verdi: La traviata, extraits (Mono Version)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbbb1ff64ad4b732e94791295396b6fd5db97850cb8a488b1084f3578b5d4e969. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEN960730311 — a six-check JSON result.
Gianni Schicchi, SC 88: O mio babbino caro
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc988ad52833a92382916f2146576abd3e0cc1198e5dc5c5e935b79f88ea9ced8. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEN960400190 — a six-check JSON result.
Madama Butterfly / Act II: Addio fiorito asil
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf04bd430c6098b7bbf619d241d7e0f3fffc7a36e3e2babd1d2166a30e225bda8. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEF058730618 — a six-check JSON result.
La Bohème / Act 3: "Donde lieta uscì" - Live
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59e1b560871d836f69df0eef5bb6a3a246fec3e44772676955660a3321a554a6. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEN960730324 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44e837ac6482519afd73b71d0e68b754f4c47f8cc2a381c048c0e9673b02d8f6. Chain 2 (Bitcoin): anchored in block 960389 (2026-07-31T10:20:10Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEF056131304 — a six-check JSON result.
Almicare Ponchielli : La Gioconda (Live Recording New York 20.04.1957)
Mascagni: Cavalleria Rusticana - Leoncavallo: I Pagliacci
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79af134dd3824c4d6682d3117fb1048c41939f9c4e3e03a06259313311b8818f. Chain 2 (Bitcoin): anchored in block 960455 (2026-07-31T19:53:13Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FR6V81730632 — a six-check JSON result.