right|thumb|200px|Gniezno Cathedral Mikołaj Zieleński (or Zelenscius; ) was a Polish composer, organist, and Kapellmeister to the primate Baranowski, Archbishop of Gniezno. Life Neither the date of h
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 0x4d38448f9d0e749993f84e90251f8681dba11b3c765be8d63441cd9f6d196f21. Chain 2 (Bitcoin): anchored in block 954784 (2026-06-22T02:53:59Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/e0df5621-1df9-4802-b145-27adc23bc02f.json and https://artists.proofprofile.net/proofs/artist/e0df5621-1df9-4802-b145-27adc23bc02f.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Battalia à 10 in D Major, C 61: I. Sonata
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 0xb0eee770e5675efebcb6b50c4075b6f3279a9d31903c1c752d6cb00f1701af09. Chain 2 (Bitcoin): anchored in block 960111 (2026-07-29T13:21:01Z), 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/PLN251700404.
Battalia à 10 in D Major, C 61: III. Presto
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82f2c65c97af610f2120b81d84ef702c03ea89fb864b9b44be294218444c8b77. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/PLN251700406.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40031136b1008a6512498ac097de8b0114e3764c1c94b316f80f85dc923a7f84. Chain 2 (Bitcoin): anchored in block 960203 (2026-07-30T03:35:13Z), 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/DEE472000001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a6964d4f497ce494db53311856afd5040adfb1cd03931e72b8436d1194f9d4b. 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/DEE472000022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1bb7675746698a649b2401a6abacce96a3535a40da49a50e6be16e0cf45db91. 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/DEE472000019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1c839f3d58c5383d7be5e2c456857afcb114867eb7ac7c8a61f4b7d5b477ae9. 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/DEE472000029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44f522987a85608b36f6e942069ec5acf4520550fefd53b7c5f1ed3d74785adc. 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/DEE472000002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x764ab4b27de81413ce3dcc7464df595b83566cb914f84efbac2ea4302e92c6ea. 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/DEE472000006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f46868f0e2d4af44d52e270d78cf6e3b74eb6fb6bb6b4287630c739b3a35307. 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/DEE472000017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c7a5861722cae94ae10e21f788ed330e5bd7a3cd16fe4ce5f8f4b926a182abe. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEE472000004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb64b62ebd085c913575644b341a050ee781d4c3c1b0368510f9aaa90858324d0. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEE472000014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6225689537c022bce530aad55192b03723a1b4f15eb2637b7db20e2dbfa04569. 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/DEE472000013.
Incipit Lamentatio Jeremiae Prophetae à 8
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8038e7016605cf751213afde8453120a6710e5dea81d2a7ea944f13c679d5491. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEE472000020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04a5b8c57f1cbd01512e2ed5eb46bda9acf8d091d1efdd98c4e32316a1b5e710. 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/DEE472000021.
Missa Tempore Paschali: Agnus Dei à 6 & 8
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x827263ca4b7f319343ce4579503ef842d086e37fa0dcaa00bd9acb6fc819fb60. 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/DEE472000010.
Slavic Holiday: Legends from Ancient Bohemia & Poland
Trombone Grande: Music for Bass Sackbut around 1600
Zieleński: Offertoria et communiones totius anni (Excerpts)
Zieleński: Offertoria et Communiones Totius Anni
Zielenski: Opera Omnia, Vol. 6 - Communiones totius anni
Communiones totius anni: No. 25. In festo Transfigurationis Domini: Visionem quam vidistis
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f68fc1e159d8b6f0391c2c7230ee837730a0b27fb5d6f30064ae0d11dac4aeb. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/PLA161186202.
Zielenski: Opera Omnia, Vol. 3 - Offertoria totius anni
Zielenski: Opera Omnia, Vol. 2 - Offertoria Totius Anni
Zielenski: Opera Omnia, Vol. 1 - Offertoria Totius Anni
Zielenski: Offertoria totius anni / Communiones totius anni
Offertoria totius anni: In festo S. Silvestri Papae: Inveni David
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbdde21507887dfa93e99640f7f81c50de30dd8f90c6fd2cc180ae54f7bf50318. 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/PLA160868108.
Pater Noster: A Choral Reflection on the Lord's Prayer
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4858d1971f52df66ad414586da13d4afd85d933c9a3c2a9ccef973a69e27c9a. 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/HKI191245401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35d7bfc00f3e59eba23170596ea61a798c768df67d2960324eea477afd19427f. 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/HKI191245402.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x608251c1396f7ca3a0b1901b765169838e64ece7d62e2758fbfd3ea666137a05. Chain 2 (Bitcoin): anchored in block 958041 (2026-07-14T18:13:17Z), 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/HKI191245403.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd3e086bafe40630d3b4d6704851b10025bd387c90932461cd886eda4857b7ef. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/HKI191245404.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51a53c69c95cfb096d4c7465882d7df41c7c32fa8d56a534eaa26715d266d1c2. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/HKI191245405.
Masses, Book 2: Missa Papae Marcelli: Sanctus
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5fe3c2e94a0e5e98243a1aaa55231fb9c90067e17b124c9773c7ab3898e44a14. 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/HKI191245406.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7c7943f89633ed5ac6c79ca470a146986a9f2f8bcef35ab24a9a08a8c359c94. 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/HKI191245407.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab343bc43e12c1c6574c81fe655e8c8510027bddf49d613ffe3bbb8782964392. 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/HKI191245408.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03c7d92eda49beb84f4bfe4de1e5d2f52fca249a4b6e3fd43ef9b87cb34a3c4c. 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/HKI191245409.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf27b5d4faa919668e0bd1103c0576eeb7af7cfb6fef86555a2cf57aa44a6da4. 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/HKI191245410.
4 Petites prieres de Saint Francois d'Assise, FP 142: No. 1. Salut, Dame Sainte (Modere, mais sans lenteur)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03439d0cb78a8a14b4a8de6021cae6f958a24fc9a8a35d1652b1617d65f10b86. 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/HKI191245411.
4 Petites prieres de Saint Francois d'Assise, FP 142: No. 2. Tout Puissant, tres saint (Majestueux et eclatant)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ec525440b2c6a1a34f1e237f0fe85216ae7109ecf704be6f76526579f00af30. 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/HKI191245412.
4 Petites prieres de Saint Francois d'Assise, FP 142: No. 3. Seigneur, je vous en prie (Tres expressif et fervent)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc94f15efd0b3cce9a3470d04f451d41840f11ac6b4144c6a7f680c6a726a517c. 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/HKI191245413.
4 Petites prieres de Saint Francois d'Assise, FP 142: No. 4. O mes tres chers freres (Bien calme)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10addb29b116e36fab09616dad69ede4ad678515c712825a4dd53a3d950baf47. 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/HKI191245414.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ba7be1d85c74328ccfd633c757100a3932e39947d445585f77662aa43aa8810. 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/HKI191245415.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfdc7821d58f741228fa2f516f7cd4a1ac361f02793d517ad86021cfc90ca2415. 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/HKI191245416.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b6fe2f840865d7605806d3c80a02c0715f9bd4be17323fa9eced171dfa31967. 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/HKI191245417.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9bea8e39c179a4816f6edb535c372332108f5a1b1ee56d77437604adecd680cf. 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/HKI191245418.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5503bdc2a149617a664cba650a753af483a56b90a67f5fb1ff6f4399ab5652f6. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/HKI191245419.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3242b483c212684c453859086077bdce10f927818eae055c7ae484f17fa9107e. 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/HKI191245420.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x382256d767f5467f7762f2b1a8878b34a5e11323efeec945d75b8398eefeb2e7. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/HKI191245421.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4700e295e85919305429a7911d5b0f1ec2e389a972a9bd9784ae9359c50d01d. 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/HKI191245422.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b1e11ba226799e7fb72ceeb56e1121c9adef5e9ef475165edd4e75c0389347b. 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/HKI191245423.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb24dcb355176ab91ca259ac814b57a9c497d5654a723a6b3e8c80184b4ee5bc6. 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/HKI191245424.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe87f5a9f06112394661312929f61c0eb50555bf5fc0880ceea3e0646d55c515b. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/HKI191245425.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25b31c088b3a4104bb97e3f3cbeee522bdbfe7c4d82bf160c1fad444f2c98c1f. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FRX211009058.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00d8aa9b2b34b7c7495534504f37bc87bb1e11b37f0acda4a33e8daa2aac43ea. Chain 2 (Bitcoin): anchored in block 960478 (2026-07-31T23:30:38Z), 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/FRX211009061.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a10299ecc9ffebde9262829d4958c678e10935cb00a501aa8abc864b316b9df. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FRX211009062.
Benedictine Monks' Choir Of Santo Domingo De Silos
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6c2b4b4b1ee2384862e8e0593f4813c558d035b8fddfaf6f73319845667c8fb. 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/FRX211009066.
La Maîtrise de Saint Marc - LES CHORISTES
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01060db942dd0886a3144d7637e6be9bd23470a9c694a57c243991fb4830c7fc. 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/FRX211009071.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x955e4ab03bf09f199159736be638e504f53c68c4997a9aed0edc4b6ba62af2c1. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/FRX211009073.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x378624df1ce3e74dfaf47f6c06192c4b572785ffa15285be8b8ea54b28687c61. 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/FRX211009074.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67d8c60e98b10c8419aecf3edef2741c1730c6fe73e05aee107776eeec2f8d22. Chain 2 (Bitcoin): anchored in block 960207 (2026-07-30T04:47:22Z), 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/FRX211009076.
Fire of the Soul: Choral Virtuosity in 17th-Century Russia & Poland
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a57c381a8a406f61e6b754e74c7fcfdc3791d5c8755c1cbb2a85720d6151859. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USTC10762462.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa595751b4b6ce2849a4688ffae9f786a107d12c5bcf2d4be05dd9b99bf887b29. 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/USTC10764723.
Venite ad me. Kõik tulge minu juurde nüüd
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97ed0a144c3a040845a4dad7f7875824780204cd84fe2ddeeda927c65963e0b4. 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/CH6542315772.
Les plus belles chorales d'enfants : Chants de joie
Les Petits Chanteurs de Saint-François de Versailles
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe901d0c41423c67516da3ab529737e3ff4ec0ca723cb709c555c29635adb2c9e. 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/FRZ810611993.
Polish Baroque: Pękiel and His Contemporaries
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0740a309cf8da3c63bcc7f545ab22c5aa29a35858cf2fd7841e17b6f1793d473. Chain 2 (Bitcoin): anchored in block 960203 (2026-07-30T03:35:13Z), 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/FRZDG0700229.
Modlitwa, gdy dziatki spac ida, "Juz sie zmierzcha" (A Prayer When the Children Go Tt Sleep)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9362554be7cc282ff36ab6109e56e09f25501b46052151e20f070bbf9c83b38. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/PLA160867607.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48840b2b3eafdee0f3ebfba16460edc11244b05c54c25be8d4473412850d3670. 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/PLA160867609.
Chants des Renaissances italienne et polonaise
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e42bda2cb6b5f2aaeb78f572ba6843e672900b12416a5a47ff901839105250b. Chain 2 (Bitcoin): anchored in block 960489 (2026-08-01T00:40:43Z), 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/FRX210702018.
32ª Rassegna Internazionale di Cappelle Musicali - Loreto (Live)
Chór Kameralny Uniwersytetu im. Adama Mickiewicza
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b97c96b0f936c687323aec57e1fa548926ea9608b5228176873a89962cce2ee. 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/PL68T2200035.