thumb|Tomáš Netopil 2023 Tomáš Netopil (born 18 July 1975) is a Czech conductor. He conducted the Oslo Philharmonic Orchestra in 2005 and made his debut with the London Philharmonic Orchestra in May 2
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 0xf25661bd9bbe85bc6e8dcdb8f74f9f16147092cdfcc9e65fbe93df7a392e0c15. 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/48c2b4c0-2b45-48cf-875e-c1dcd3a1d790.json and https://artists.proofprofile.net/proofs/artist/48c2b4c0-2b45-48cf-875e-c1dcd3a1d790.ots, the client at https://opentimestamps.org runs `ots verify -f record.json proof.ots`.
Janáček: Orchestral Suites - Jenůfa, Káťa Kabanová, Fate
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 0xe8cb4563e0d59f40941c8ca3f043683645091f495b372c71f08a05d650d8c359. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/CZA161602060 — a six-check JSON result.
Mahler: Symphony No. 2 in C Minor "Resurrection"
Martinů: les fresques, the parables, estampes
Weber: Der Freischütz, Op. 77, J. 277 (Live)
Martinů: Bouquet of Flowers - Novák: Philharmonic Dances
Ariane. Opera in 1 Act, H. 370: Aria. Thésée, je respire une dernière fois
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd196363807e1d892813e814ef57ed9c19bcc81053b844b1d5cc6d6e4f749338f. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/CZA161600684 — a six-check JSON result.
Janáček: Glagolitic Mass, The Eternal Gospel
Janáček: Sinfonietta, Taras Bulba, The Ballad of Blaník, The Fiddler's Child
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0193c55001463882e9f69337122c57fec245de94a57d4e00a66087c93fe7de42. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/CZA161300831 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9793ad6457d9e8b34f3e0199c5972b7a104103d9e5ed442d40b5fd19dbdd82c. Chain 2 (Bitcoin): anchored in block 960473 (2026-07-31T22:27:44Z), 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/CZA161300832 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeeede0e980a212717a65ad03a4c2f600ff687773995f0fe75bae1f197db8d5aa. 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/CZA161300833 — a six-check JSON result.
Symfonietta, JW VI/18: V. Andante con moto - Allegretto
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ee79b66abbd38e2e74c7ed50d65b1d0bbb3f8517a1e37297e955a10b4f4afd7. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/CZA161300835 — a six-check JSON result.
Ma vlast (My Fatherland): No. 2. Vltava (Moldau)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcbac4a6b074edcda3a417e3d035264ec3829134c85a04f079ffbf141e8e53618. Chain 2 (Bitcoin): anchored in block 957052 (2026-07-07T14:50:41Z), 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/USB8U1045665 — a six-check JSON result.
Suk: Symphony & Dvořák: In Nature's Realm - Carnival Overture
Mozart, W.A.: Lucio Silla (Teatro La Fenice, 2006)
Concentus biiugis for Piano Four Hands and String Orchestra
Zujte strune (Hum away, hum away, strings!)
Legends, Op. 59, B. 122: No. 1, Allegretto
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29e9e353e994cc2fc0027dce576cc6a0fda7653d5ce004c655f3cc8bb4ad9d18. Chain 2 (Bitcoin): anchored in block 960164 (2026-07-29T23:23:05Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLE422422101 — a six-check JSON result.
Legends, Op. 59, B. 122: No. 2, Molto moderato
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5e847e25c552898bcc6c28d9cf252e07d53a13a2c59950434b1e61bfd12eb31. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLE422422102 — a six-check JSON result.
Legends, Op. 59, B. 122: No. 3, Allegro giusto
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f30da84897b89a817f9fa89459cae064069c8c1f0545cd94581567e1eef0602. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLE422422103 — a six-check JSON result.
Legends, Op. 59, B. 122: No. 4, Molto maestoso
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x446eeaa2cce523558af90e7539e73c69906699782a84f8bef0f4f4a5752c229a. 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/NLE422422104 — a six-check JSON result.
Legends, Op. 59, B. 122: No. 5, Allegro giusto
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x501001a34b886468b60cec5cf00f34bae1084fb4bb456c151a1de0a00d209a8e. Chain 2 (Bitcoin): anchored in block 960266 (2026-07-30T14:44:50Z), 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/NLE422422105 — a six-check JSON result.
Legends, Op. 59, B. 122: No. 6, Allegro con moto
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd10ea90b03efa63071f107fdb385e3335fc47dd86b208d673cfc834d90bfcaa7. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLE422422106 — a six-check JSON result.
Legends, Op. 59, B. 122: No. 7, Allegretto grazioso
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8add286c1c091f9858c33c3d00eb512c277ae8cd5acdcfe8cf385b8de38a04d3. 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/NLE422422107 — a six-check JSON result.
Legends, Op. 59, B. 122: No. 8, Un poco Allegretto e grazioso
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12121264314bab14fc97514bdca6bb1c2d86ed340a51542f6c6fd8d5493aaf60. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLE422422108 — a six-check JSON result.
Legends, Op. 59, B. 122: No. 9, Andante con moto
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfafa519832eec05670d9a6f038f54615dae503d8a2c875fac2c03db35cebf72c. 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/NLE422422109 — a six-check JSON result.
Legends, Op. 59, B. 122: No. 10, Andante
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad3c250e60b61cfdd4d35dfa99d0c4893ea118aa394241c4c7d5d3f780c62c3c. 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/NLE422422110 — a six-check JSON result.
Slavonic Rhapsodies, Op. 45, B. 86: No. 1, in D Major
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x139c66946876f6c43a4bc03bc2e7bbc53657717178c15ac7cb2dc52a0f7adcd1. 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/NLE422422111 — a six-check JSON result.
Slavonic Rhapsodies, Op. 45, B. 86: No. 2, in G Minor
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71c3e66b04eaaf1b7103ec70608de055bb40a781889553f8528ae9d6f263d6c5. Chain 2 (Bitcoin): anchored in block 960383 (2026-07-31T09:50:37Z), 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/NLE422422112 — a six-check JSON result.
Slavonic Rhapsodies, Op. 45, B. 86: No. 3, in A-Flat Major
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x451bee5a5b3e7ff79fefcbc73a8dc36cc752dea1307129cb2b35bb19cbb75627. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLE422422113 — a six-check JSON result.
The Two Widows, JB 1:108, Act II Scene 1: Když zavítá máj
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8eafbf6a8db111d5f489480082aa58e2887ced7117f4f4bfab24d9a9d201e2bc. 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/CZUM72400798 — a six-check JSON result.
The Bartered Bride, JB 1:100, Act II Scene 4: Duet. Nuže milý chasníku
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x053c4d6e83fb828717c3dc981b87fe821d1b144b7951584d76d2ba328b642547. 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/CZUM72400815 — a six-check JSON result.
The Bartered Bride, JB 1:100, Act II Scene 5: Jak možná věřit
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbeb1901673ee594d3bfa73813a38209aed484302f337a619e99a22c2482b1b10. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/CZUM72400816 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x125466ae8ef45f7c88141f85472c30a5f424585e2747f4c191e8e19562ba33e5. Chain 2 (Bitcoin): anchored in block 960485 (2026-08-01T00:10:46Z), 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/CZUM72400811 — a six-check JSON result.
The Kiss, JB 1:104, Act II Scene 2: Já nešťastník – Kdybych věděl, jak svou vinu smýt
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72fbe3ae4396526b621c22893c797e5553ad92eb0e9446c6e72961dfa10763d6. 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/CZUM72400813 — a six-check JSON result.
The Devil’s Wall, JB 1:122, Act II Scene 1: Kam prchnout před jejím tak sladkým obrazem
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54588708d98ffccf74cee7ad3b7e6af96d21d0ed90c7518a45c423f33ebc8054. Chain 2 (Bitcoin): anchored in block 960463 (2026-07-31T20:42:35Z), 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/CZUM72400800 — a six-check JSON result.
Dalibor, JB 1:101, Act I Scene 4: Zapírat nechci – Když Zdeněk můj
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x524f207926a695fd9a28a45e85ac86ab8b015414aab0bdc7ceb564286d6da1ec. Chain 2 (Bitcoin): anchored in block 960494 (2026-08-01T01:44:32Z), 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/CZUM72400812 — a six-check JSON result.
Dalibor, JB 1:101, Act III Scene 3: Tot Treti Noc, Kterou Mi Naznacila
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce360d3c01a7725a806004788a892227aa53b543560fd15d4a9916a36431fe0f. 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/CZUM72400797 — a six-check JSON result.
Suite No. 1 for Violin Solo, B. 99: I. Prelude
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1f99246f5fc0525c38179ad93cef6d59d2d067430668af905633e400b3ac0f6. 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/CZD942500250 — a six-check JSON result.
Sonata No. 1 for Violin and Piano, B. 42: II. Molto quieto
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93e77c5567984138034c7e581e8553f3c87face24fc63846dd2020f419cbe7d2. 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/CZD942500260 — a six-check JSON result.