The Venice Baroque Orchestra is a baroque orchestra founded in 1997 by the Italian conductor and harpsichordist Andrea Marcon, based in Venice, Italy. In 2019, they performed with the Naumburg Orches
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 0xdeb27f5526d131c565d57c77925c4377e674bda302283586bf05ec23dd8bd05e. 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/6b6d6d5e-6e26-42f2-a693-e3ba8a70daf0.json and https://artists.proofprofile.net/proofs/artist/6b6d6d5e-6e26-42f2-a693-e3ba8a70daf0.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Marcello: Concerto in D minor - Unpublished Concertos and Cantatas
Concerto Per Oboe, Archi E Continuo In Re Minore: I. Andante Spiccato
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 0x3d5014a1f632f9bab40e576b335e33ac6fb16c9be15923c6b71f2539d9b58f55. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/GBCRW9850501.
Concerto Per Oboe, Archi E Continuo In Re Minore: II. Adagio
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51f140fd06a03d4b93ab256131283fcc1758373ed8d57896440d65948eab57d4. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/GBCRW9850502.
Concerto Per Oboe, Archi E Continuo In Re Minore: III. Presto
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf732df79f7893821a6f20335a01fc731b24db6baae8eb0698886b36689b75012. 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/GBCRW9850503.
Concerto Decimo Con L'Eco, B Dur: I Andante
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9850b0b55f6a344afa70abb8d55e15440fe3677dda32fd084ab1bce05da2175. 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/GBCRW9850504.
Concerto Decimo Con L'Eco, B Dur: II. Larghetto
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a1d4c6d49773cb5ccb6bf2018cfa09d585e8d53a11e25b0ff65a45374fb0a5c. 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/GBCRW9850505.
Concerto Decimo Con L'Eco, B Dur: III. Spiritoso
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41c6b81c53e323adceb554ecba98efaff2dd46fc0bc559e0f85055474a60edb7. 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/GBCRW9850506.
Concerto XVI In Fa Maggiore, Per Due Oboi, Archi E Continuo: I. Allegro
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67835048add26654789df5e7c9343f5baedfc6cedc650330b8e35c087573a61f. 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/GBCRW9850507.
Concerto XVI In Fa Maggiore, Per Due Oboi, Archi E Continuo: III. Andante Ma Non Presto
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c6476975453567cf10e02593568e520b1a6555be5d032ccac3024c281eb8558. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBCRW9850509.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9269df7e3472a3c2a0fa0ed9cabcaa2a72d92263b3545d8510069a94286928b0. 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/GBCRW9850510.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a0a899aba81d0b1c1976fa19ae3c8fab87c77d3a71290dc425b843018b902e4. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBCRW9850512.
Concerto XIV In La Maggiore, Per Due Oboi, Archi E Continuo: I. Andante Spiritoso-Adagio
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2def613a058b55abd89eff68b0c508405d38520d8faa44dd1cf97145980e5d07. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBCRW9850513.
Concerto XIV In La Maggiore, Per Due Oboi, Archi E Continuo: II. Allegro
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2aa3ad5416adc80d52c8d80644b94aa68b1ed3774e3610e746a09cb633055fb2. 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/GBCRW9850514.
Concerto XIV In La Maggiore, Per Due Oboi, Archi E Continuo: III. Presto
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc402e1e9e43ae661e156c2ecb4cde46341844781e4fd6bda9ec1d08a39e38e3. Chain 2 (Bitcoin): anchored in block 957032 (2026-07-07T11:43:09Z), 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/GBCRW9850515.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x902fd8dbe1beb015d6f07e36280b266d3fd039d9fcea1e97668e77e5833101cb. Chain 2 (Bitcoin): anchored in block 957048 (2026-07-07T14:18:56Z), 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/GBCRW9850517.
Irene Sdegnata: Recitativo: Va Tiranno - Andante
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c7a7cdcfa6f1e72fb0e9d26265b9dff74e316cd12617a800e8aa9d445e1b04b. 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/GBCRW9850521.
Concerto XVI In Fa Maggiore, Per Due Oboi, Archi E Continuo: II. Larghetto
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea0f825d7e35e2243ed259f3655fcb7b6fee81c418f287f39663bd4ea9297d8d. Chain 2 (Bitcoin): anchored in block 959100 (2026-07-22T07:19:30Z), 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/GBCRW9850508.
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 0x4ad668e44bfdac49243eb0ac4d5cf5b39efb7048498f21775a5a418d0b61a8f3. Chain 2 (Bitcoin): anchored in block 960177 (2026-07-30T00:21:01Z), 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/GBCRW9850516.
Irene Sdegnata: Recitativo: Contra L'Empio Fileno - Andante
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xccaa10ec9d6112fae7d136ea5991bb345dc4881433c6c10858c0f9a94940a54c. Chain 2 (Bitcoin): anchored in block 960181 (2026-07-30T00:53:20Z), 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/GBCRW9850519.
Irene Sdegnata: Aria: Ingrato. Spietato - Moderato
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04847f2c79c8ed7f0b47adaf16b7b34e52a9a7c0104f945c94015a86fc4a3e80. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/GBCRW9850520.
Irene Sdegnata: Aria: Si, Va Pur - Allegro
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65e5e91e1971c7ea190bb80833223affbe2697ea28649e0e6836c419adb58d8c. Chain 2 (Bitcoin): anchored in block 960157 (2026-07-29T22:12:10Z), 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/GBCRW9850522.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaceda6a8046eb19122b64ccf0e741f2155a48d2ba5e0a95fb44d279c61b27e54. 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/DEN960632001.
Vivaldi: Orlando Furioso RV 728 - Adapted by Andrea Marcon / Act II: Ah fuggi rapido
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd57ef63219ac6467adaa38e8b91da6f26cdede35612f1fae4afdeb2406bec89. 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/DEN960601410.
Il Bajazet (Il Tamerlano), RV 703 / Sinfonia: I. [Without Tempo Indication]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x411d7e203f30381bc24bbae8364b41bc5b9cdc63afda675f08226753f74906fc. 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/DEN960601631.
Il Bajazet (Il Tamerlano), RV 703 / Sinfonia: III. Allegro
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa508ea604c16d0d07c91e203de4c31e0f67503a4dfaf6bbb47f63462b4bcec5. 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/DEN960601633.
Tito Manlio, RV 738 - Adapted by Andrea Marcon / Act III: Dopo sì rei disastri
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f04de2f48640cd7d1164941020151b9c61828ecc5d6397585a79c500496e514. 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/DEN960632008.
La Verità In Cimento, RV 739 - Adapted by Andrea Marcon / Act I: Amato ben tu sei la mia speranza
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82202d2f4844869e7612236a502e8d64dd408e6eac2bebbfb79155de7d93075b. 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/DEN960632009.
Tito Manlio, RV 738 - Adapted by Andrea Marcon / Act II: Combatta un gentil cor
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a38c4b04ed7e2cfdb7dbb58560f264eaf05870061409de0b81e97473a01fa51. 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/DEN960632010.
La Fede Tradita E Vendicata, RV 712 - Adapted by Andrea Marcon: Sin nel placido soggiorno
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe912a601961a22986a0b813cae5b20b37747425eb2a8272a5c40e5aed8dfc59. Chain 2 (Bitcoin): anchored in block 960362 (2026-07-31T06:58:00Z), 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/DEN960632002.
L'Olimpiade, Act II: III. Siam navi all'onde algenti
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4bece96e52c537d9daf4b13ecc9c17aeaa7657241d4d67c151bc33954db0c377. 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/FRZ131123120.
L'Olimpiade, Act I: I. Superbo di me stesso
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19401ce9b9317211ee4543769e8efea505c4ed8dacc9de69da2f72dcbb138061. Chain 2 (Bitcoin): anchored in block 960354 (2026-07-31T05:48:18Z), 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/FRZ131123020.
L'Olimpiade, Act I: II. Quel destrier che all'albergo è vicino
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8fbfb4b9f32b1c330d7ccb2409c9a73956d570069604879057f39f90c376168e. Chain 2 (Bitcoin): anchored in block 960500 (2026-08-01T03:13:03Z), 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/FRZ131123030.
L'Olimpiade, Act I: IV. Del destin non vi lagnate
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55eb274ee11d72cb771993c44232f6753bf1dac48a25c1a30a8a0b39cfc08a8d. 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/FRZ131123050.
The Four Seasons - Concerto in G Minor, RV 315, "The Summer": III. Presto
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0b5d4d154353291b97d7eed76ff12c16a6ec3987f90a30cd61cf3bc24313bb4. 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/DEN961403443.
Porpora: Arianna e Teseo: "Mira in cielo" (Alceste)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27e63425b63bb2289a45218687cc1b23f74caa04f89c8d5ef72c07f2e11da854. 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/GBAYC1302153.
Porpora: Semiramide riconosciuta, Act 2: "Se pietoso il tuo labbro" (Mirteo)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0af9f05486ed5d233b4f663cba08d3dda16f4e63e2106fd9e56636899b88c527. 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/GBAYC1302145.