166px|thumb|right|Tomb effigy of Mikołaj Gomółka in Yazlovets Mikołaj Gomółka (c. 1535 – after 30 April 1591, most probably 5 March 1609) was a Polish Renaissance composer and a member of the royal c
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 0x555f3b1eeb4315e09896bc871e01f4641b496bac91b8390ea1fbd5f0d58c2e57. Chain 2 (Bitcoin): anchored in block 953911 (2026-06-16T08:03:10Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/17b904c9-6325-4a1e-8409-26d4ef8171a0.json and https://artists.proofprofile.net/proofs/artist/17b904c9-6325-4a1e-8409-26d4ef8171a0.ots, the client at https://opentimestamps.org runs `ots verify -f record.json proof.ots`.
88 Holiday Classical Christmas:A Choral Festival. Celebratory Music for Holidays
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 0x4ee1c0bd2a72e6fbf1d969c26b2f40c310735040df7a88a22665ed2fc6ede9de. 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/DEBL60660637 — a six-check JSON result.
Evening Song / Pieśń Wieczorna / Giesmė Vakarinė
Mikołaj Gomółka Melodie na Psałterz Polski Opera Omnia (Vols 9 & 10) Psalmy Prorocze, Psalmy Błagalne III, Psalmy Pochwalne
Audite, gentes! Psalms of the Golden Age
Mikolaj Gomólka: Melodie na psalterz polski - Polish Psalm Melodies
Panu ja ufam (In Domino confido), Psalm 11
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4272bc4ff228af4c8060e999008476b3486176bfb6682406db7b54471eaab0d7. 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/USJSJ1012822 — a six-check JSON result.
Siedzac po niskich brzegach Babilonskiej wody (Super flumina Babylonis), Psalm 137
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29dc8641252909f49334569e4343d74516cc21b8a9b06136f93ec8c48bdd2624. 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/USJSJ1012825 — a six-check JSON result.
Niescie chwale, mocarze, Panu mocniejszemu (Afferte Domino, filii Dei), Psalm 29
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4f73a2c6f4bdbb60ab469aed07227de83cf4b69476db6def9994e4bb55f0921. 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/USJSJ1012827 — a six-check JSON result.
Kleszczmy rekoma wszyscy zgodliwie (Omnes gentes, plaudite manibus), Psalm 47
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14ad9d77a39cb330c48e58bc21590e233658a03766abb9dbd4045e96d4e0b967. 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/USJSJ1012862 — a six-check JSON result.
Mikołaj Gomółka: Melodie Na Psałterz Polski Opera Omnia Vols. 7 & 8 (Psalmy mądrości, Psalmy błagalne II, Psalmy Syjonu)
Mikołaj Gomółka Melodie Na Psałterz Polski. Opera Omnia Vols 5 & 6 Psalmy historyczne, Psalmy błagalne I
Mikołaj Gomółka Melodie na Psałterz Polski Opera Omnia (Vols. 3 & 4)
Psalmy dziękczynne i pokutne: No. 1, Kleszczmy rękoma (Ps. 47)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e0effedfc79f681f4070e52c505f77e6202eb7e0aa45cef8024d1acc2f4f124. 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/PLA391922001 — a six-check JSON result.
Mikołaj Gomółka Melodie na Psałterz Polski Opera Omnia, Vols. 1 & 2
Psalmy Pielgrzymów: No. 16, Pomni, Panie, Dawida (Ps.132)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xebea675c35acb66b9994090f1107d2cc522a9bc0fa245cdc29876642a060d6e2. 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/PLA391821816 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf30e22071f1adb29f288c6cc6c3ed13726e15a5616aa20a2c3ead88a63153f4e. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/PLL171400106 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4254950368e90a3e20051ffb53b8113826e6e30b27eb6948ea76c6b175edd893. 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/PLL171400107 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x183755eaebbd9feaa29da045f6c1e4306a0d3e2b0341f2876d2ee1a3a0ab5215. Chain 2 (Bitcoin): anchored in block 957820 (2026-07-13T07:54:01Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/PLL171400109 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13a3b6d3bbd0654921dc22cc537a02f6add146f0ac1dbd1db0613c79afdb5bbf. 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/PLL171400110 — a six-check JSON result.
Jelentem versben mesémet (Balassi bálint énekei)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x445cd5d0d053c3b09cbab0bff2f657a50d9ae226d05454bbd6d5a0b8d318ec0a. 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/HUAUX1800314 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99019e5930a96d756e8532706320995c3a51b6783dd9dc3bbeb6db2ad62a0c56. Chain 2 (Bitcoin): anchored in block 960360 (2026-07-31T06:42:11Z), 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/HUAUX1800354 — a six-check JSON result.
Polish Psalms Melodies: Music of the Polish Renaissance, Songs and Notes, Psalms of Golden Age (Melodie na Psałterz Polski)
Dominika Jurczuk Gondek & Masters of Traditional Catholic Music
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a825a34142524f5d5c64d34270f5cd761f77f0af01657afe6428b09a416f445. 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/PLL433004098 — a six-check JSON result.
VI Festival de Música Barroca "Misiones de Chiquitos" Vol. 1
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67e367c82b3fcab0465a364847bd1212a1a8d431d3ac689a701bfad0a41d0f26. 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/QM4TW1776662 — a six-check JSON result.
Music on Wawel Castle (Muzyka na Wawelu)
Melodie na psałterz polski (Remixed 2020)