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 0xb5907085c7802b966854c6bfca5f5d4cc829ef90ce8784f5e9775470626573da. Chain 2 (Bitcoin): anchored in block 954066 (2026-06-17T08:11:48Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/32d9cce6-899c-431e-87d9-b6b89376e374.json and https://artists.proofprofile.net/proofs/artist/32d9cce6-899c-431e-87d9-b6b89376e374.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Stanisław Moniuszko: "Verbum nobile" - Opera In One Act
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 0x296ecf239269837ef175f87031576629491910a316866247a33bc912f636b37e. 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/ES7891802232.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x311612243b54da07ac076bc04a1acca3ca448921b5bdf584cdbddab6c5fe93e2. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ES7891802202.
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
Straszny Dwór, Akt III Scena 2: Ten zegar stary
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0935fd4d3f7143448c72dffd982847bafa2bf67be8f9b8e99393f459ffc9ab4. 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/PLC701908502.
Straszny Dwór, Akt I Scena 4: Cichy domku
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xddeb1aa47a340b4e2dea48b11434b5a52f144c118933fe633c334dd025ceca67. 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/PLC701908404.
Straszny Dwór, Akt I Scena 5: Witam Was, witam Was kochane dzieciska
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e1332badeadb5893e592b7b9d563ca4486396378bd8e4a2d47f79fd7f372ad3. 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/PLC701908405.
Straszny Dwór, Akt II Scena 6: Kto z mych dziewek serce której w cnych afektów wplącze nić
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ac438655bbae1b6a6c7070c8c20f5738bf43ec873d3ec46dd613284e9522685. 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/PLC701908412.
Straszny Dwór, Akt I Scena 2: Więc gdy się rozstaniem, przed słońca świtaniem
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2ebdb1598b9b50451d61b116b94783c6f85cbe16c19479abc9c56b6e97199e4. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/PLC701908402.
Straszny Dwór, Akt II Scena 1: Spod igiełek kwiaty rosną
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06c20e07ccd5413713598c9ef662cc8a401f3d62771c55ef390ad630da385034. Chain 2 (Bitcoin): anchored in block 960410 (2026-07-31T13:50:38Z), 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/PLC701908407.
Giuseppe Verdi: Un giorno di regno (Il finto Stanislao). Opera in 2 Acts
Un giorno di regno (Il finto Stanislao). Opera in 2 Acts: Sinfonia
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf915b9e6929e20941dca029153e8313f117431d3c04f79cb1b656b81db3eddb. 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/PLC702409601.
Stanisław Moniuszko: Paria. Opera in 3 Acts (Italian Version)
Lukaszewski: Symphony No. 2 - Gaudium et Spes - Trinity Concerto - Sinfonietta
Paweł Łukaszewski: Symphony No.1, Symphony No.2
Penderecki: Powialo na mnie morze snów...
Stojowski: Suite for Orchestra, Le printemps & Prayer for Poland
Symphony No. 9 in D Minor, Op. 125 "Choral": III. Adagio molto e cantabile
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97057a1cdc32a3ef7791a3544366f72866a4637539c69273f5ea0c35c5226839. 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/DEN962430903.
Symphony No. 9 in D Minor, Op. 125 "Choral": IVb. Allegro assai ("An die Freude" Instrumental)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a725e686fe01caa174b4719cc696f9203e8505865a36acb41a02137b0761c6e. 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/DEN962430905.
Symphony No. 9 in D Minor, Op. 125 "Choral": IVj. Poco Allegro, stringendo – Prestissimo (Sung in Ukrainian)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32e6bd1bebdf1752226b18b5458712c1ebecad3a70dbfbb9b954a42303d66a45. 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/DEN962430911.
Symphony No. 9 in D Minor, Op. 125 "Choral": IVc-d. Presto – Recit. O Freunde, nicht diese Töne! – Allegro assai (Sung in Ukrainian)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05c9fc679a5c8fae2b76aa055d7709f2dbd7c773eb0226ec770bb1111c720dd2. 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/DEN962430906.
Symphony No. 9 in D Minor, Op. 125 "Choral": IVe-f. Allegro vivace assai. Alla marcia – Chorus. Freude, schöner Götterfunken (Sung in Ukrainian)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2e9080bb2bf7e8878397943e39081dc4de478daa3ccd9efa7268322234639e7. Chain 2 (Bitcoin): anchored in block 960216 (2026-07-30T06:39:12Z), 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/DEN962430907.
Symphony No. 9 in D Minor, Op. 125 "Choral": IVg. Andante maestoso. Seid umschlungen, Millionen (Sung in Ukrainian)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcba1486cfbc1393b48b2c2bc0cc48663a8f96c735993c238f69bcc4b000e8097. 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/DEN962430908.
Symphony No. 9 in D Minor, Op. 125 "Choral": IVh. Allegro energico, sempre ben marcato (Sung in Ukrainian)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f4418fd07a6f2219a164d0c93cfb6c88603af2cc8b90dedc9ae90b9ad7a9cfc. Chain 2 (Bitcoin): anchored in block 960191 (2026-07-30T01:51:26Z), 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/DEN962430909.
Symphony No. 9 in D Minor, Op. 125 "Choral": IVi. Allegro ma non tanto. Freude, Tochter aus Elysium (Sung in Ukrainian)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf846e529d88d8f8c3921fa48659edc554779ea8c90c6d106607d2169cf5a88d6. 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/DEN962430910.
Rachmaninoff: All-night Vigil, Op. 37 "Vespers"
All-night Vigil, Op. 37 "Vespers": No. 1, O Come, Let Us Worship
Podlasie Opera and Philharmonic Symphony Orchestra
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4293cb92830440f0471a132be1a5908222f4bfdd64262ef4af6dda5573be8b1. 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/PLA161740401.
All-night Vigil, Op. 37 "Vespers": No. 3, Blessed Is the Man
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5246ba52635c6981b481e71d38750e35c65c9fd88944098791afa1dd3d98c980. 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/PLA161740403.
All-night Vigil, Op. 37 "Vespers": No. 2, Praise the Lord, O My Soul
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9243721a50a33bb89ccac55dafbd17878da0e0bef068be9f1e3be6ef697cb68. Chain 2 (Bitcoin): anchored in block 960216 (2026-07-30T06:39:12Z), 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/PLA161740402.
All-night Vigil, Op. 37 "Vespers": No. 5, Nunc Dimittis
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0323b21643117aff8d58815bd4c9907d056ad346e0e25bc2bba2b399fb8c238f. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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/PLA161740405.
All-night Vigil, Op. 37 "Vespers": No. 6, Ave Maria
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x466978b66ea6ab89937de0049a499e111d2f032fb5a8e882094b1477007a0f63. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/PLA161740406.