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 0xf05ddcc2f74bf629a1a49b78cd6145e2d813b1482db116e777f72ad812a7a5e9. Chain 2 (Bitcoin): anchored in block 953770 (2026-06-15T09:50:11Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/c4263275-1533-450f-ba37-a1183490a6a4.json and https://artists.proofprofile.net/proofs/artist/c4263275-1533-450f-ba37-a1183490a6a4.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Geliefde Liederen uit het verzoek programma "Wens"
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 0x5adb8b8256268da779c4665a922289340c71f6ca7cb63581a81f0639d81d061c. 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/QMBZ91613018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3a0e0b9904c5820e46959328b6217b31aedad4aa61b07a4d7d29b1963a76088. 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/QMBZ91613019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf696bedd44dd9a6253f286affb7c7ce38bf94efd82f2c1acea543af64359cc19. 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/QMBZ91613020.
Samenzang uit de Vrije Evangelische Kerk, Nijverdal
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd56a541074ab0b34292323474662d694854144d736ddef4f6fafc51fdc5374e4. 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/QMBZ91613022.
Chr. Gem. Zangver. "Vox Humana", Oldebroek
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6f163a0baa33c7a53bb944b73b695a0832af4693be71cecdb34e5d4307283be. 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/QMBZ91613023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x468119fee0ec4b2d66bea91f5df953a9a6254bec2f0645113ef00cec0319d07e. 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/QMBZ91613024.
Chr. Jong Mannenkoor "Soli Deo Gloria", Urk
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd8829444dfd40ec223f70ef512e46531ac4a7b4e037cff8617520d15dd23f05. 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/QMBZ91613025.
Christelijk Sliedrechts Mannenkoor Ichthus
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xedff8a56464acd709383c3295ef668e3c89e83733712030dc4daf79fe358bc1f. 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/QMBZ91613029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7503bdcc49e7f8134c9396d295ed12d9f6c6f725804ab63037899f886a5ea755. 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/QMBZ91613031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c953e33e905233fd76275b422cd670c88dbcee4e2092fc7efa3387326214b1c. 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/QMBZ91613032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41fca93699ce6fd070ae0aedfe61b176bdb3b246c110f94b8404652d02971a20. 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/QMBZ91613033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54d43aa9dc498288ebe8c6d680dc1227fa87da0f373a95aeeaa5e8f24e314c23. 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/QMBZ91613037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4875a4ef160f0eedb5e8d4de235ebc96e93c1c8d804068bf2a8853cdf778c881. 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/QMBZ91613039.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68938cf835ad1516cd993e07771a9120e4aa23e9ecbc432d77608e78247c6ebf. 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/QMBZ91613046.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc92f76f3a152fe98d35f1feee3b95dd017e548df018904d18d4bdb00580d561d. 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/QMBZ91613048.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x625afef130b9d1ddd0241dcae902834d0fe9d5fa7a2be72ec3552eb5218fe914. Chain 2 (Bitcoin): anchored in block 960160 (2026-07-29T22:48:59Z), 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/QMBZ91613050.
Christelijk Regiokoor "Adonai" Waddinxveen
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x977e4769366fd543cb575e750d36f6551008c9981cf4f43ac006956be05511df. 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/QMBZ91613051.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90c61d29791d221c119dbb85fac462cc3c24c4dad76421ce882d44ce0824b730. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QMBZ91613052.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34b0f268237e5c06a57c3900d57ca3333f70dccca3846cec9913ce47aac30f54. 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/QMBZ91613053.
Op weg naar het huis van de Heer - Ps. 122
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76534c723739b579ae3d18d43d9c02e1e30b140f7ba0333bd5aa9f677754e0f5. 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/NLG620594456.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47e950226016ea214f59f578a2094a25eae3eb0462817345dc64136873066dd6. 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/NLG620594457.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaea9b15fa89f1b729925b343ece75bad1377ebd52c2e9678759c02af6bb7ad55. 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/NLG620594458.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x825d500942e871f2db5e74cf63b8d5a27ddce151bafa65983f3aad179dff980e. 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/NLG620594459.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5582290f70ef1004ee0eaaa8417b1217e8331343503c40109f8c87a3dea68613. Chain 2 (Bitcoin): anchored in block 960247 (2026-07-30T10:42:33Z), 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/NLG620594460.
Toen Israël de reis was begonnen - Ps 114
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd14295f04c6fc2950008ea6f5f1aab23b241db430c9f26d8d4a92ae859d2928e. Chain 2 (Bitcoin): anchored in block 960459 (2026-07-31T20:22:46Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLG620594461.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf530b3ff1223c9048f235f47b9a89ed70eeead893e8ba21b02406056642d8ae. 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/NLG620594462.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbba072f6d7f91c78f535590ab385898500bff8b3d0cf10463b0c3bc1c3820ba3. 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/NLG620594463.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd318fdb2dfd7b5738d1d46b0da5773f52d1ca9a19b0e70504161a66f65b0e06d. Chain 2 (Bitcoin): anchored in block 960247 (2026-07-30T10:42:33Z), 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/NLG620594464.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x999a47233636a77c993a9758ec44effcf43afadaf2d9a4c1e978ad8705ab302d. Chain 2 (Bitcoin): anchored in block 960422 (2026-07-31T15:27:29Z), 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/NLG620594465.
Prijs de Heer met blijde galmen - Ps. 146
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06dab364343553303859491537ce1cd2adb67e083134661d11589ae05442cc8c. Chain 2 (Bitcoin): anchored in block 960337 (2026-07-31T02:51:48Z), 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/NLG620594466.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff603e8999ab92f99d6dc4a1a16a8ef6036d01f7c754fa39a43972d95b48567f. Chain 2 (Bitcoin): anchored in block 960309 (2026-07-30T20:35:49Z), 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/NLG620594467.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b0b314bea0550b9dffcda0e163f163ffebb0858e50b181c441cc47b5cf36304. Chain 2 (Bitcoin): anchored in block 960481 (2026-07-31T23:51:35Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLG620594468.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2f6c26bda031181102c9e77528475f8a837e7937d45cfd2c5f141acf69edb2d. 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/NLG620594469.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2255df19cc7f602bdbeca3b0fd8ed5077e26ff4a40d863d589a1db06aaeeda8. 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/NLG620594470.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1de93c5cb7f81eee171197a319c89fb84030a5221376df895ae44bbce09154c6. 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/NLG620594471.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56ba129f291ba803d26a69f51de0199866078a71abbc289da7312cafd9edc946. 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/NLG620594473.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d4f0929f449e955fde1569d6b836693927b99a4c80136ee439a73c4282c7c8c. 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/NLG620582912.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x478cabf0bc68f958c242c3610fbdc96fb7501fe46e17bcb4512c85b416e2611d. 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/NLG620582913.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5deac2aa7b9ecf742c1756df352db9846c159944a4130f38688aa46688bd6b0. 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/NLG620582914.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2fc47a6057f82da47b7e30e6bdd0d927654bbba5e729aeb2a93607dcfdbce15. 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/NLG620582915.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb9cec35a2f1ef5800443e21a1a44174591756efd86f34c92025fc2a79cde377. 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/NLG620582916.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ac12b73a01decac4abd9628da44705b1db958bce8dc53deefcf4f48c8e46342. Chain 2 (Bitcoin): anchored in block 960314 (2026-07-30T21:00:46Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLG620582917.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3680422d77169eb5263dd9e440a7463210c6fe15a171f76bc052c71a0bccbd65. 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/NLG620582918.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e123801bd81826675dfee95cdec6ab3ca6e67f921696db2aed3706a17fcba21. Chain 2 (Bitcoin): anchored in block 959159 (2026-07-22T17:48:40Z), 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/NLG620582919.
Heer, leer ons hart Uw lied/Woon in ons hart
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87634dc31884b750c3ea910961e9a018fcc12ef0d7a730752d7172af455684ce. 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/NLG620582920.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39ae3c6ba9bc125e6889bc04bab4a3ec95cea016afe667414b3ad1604019cdb8. Chain 2 (Bitcoin): anchored in block 960258 (2026-07-30T12:45:34Z), 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/NLG620582921.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeeac6c9c14c238b4d6c9390a0ce9d576d8f4cc57d8117e480cd367ef1299ded5. 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/NLG620582922.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f12a4627bbfe2151e2c53fa9840d60dce8eb0cc08886bae383d8aa6df9ba016. 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/NLG620582923.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a95302aad19f0596d9c511c0fddd8d205ae9332ee6628fd3d48b411eebd8245. Chain 2 (Bitcoin): anchored in block 960160 (2026-07-29T22:48:59Z), 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/NLG620582924.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a7ea66e630c328821aee95bc43255d69de9bdec2c40302e9c348918f0ffd2c8. Chain 2 (Bitcoin): anchored in block 960321 (2026-07-30T22:27:30Z), 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/NLG620582925.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd611fb42d383a40b9174efb59e350347cdca8eab7ca23a5d34aa552e843b261. 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/NLG620582926.
Lichtstad met Uw paarlen poorten / Maranatha
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xabfdf44f5addffdbc131bf0dd6ae273c73280b5e55dfec702d48a25022acde7b. 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/NLG620582927.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5475ca6162a7773f62921eecf237219fb535efb50c23feb167ffa799c623ad7. 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/NLG620611696.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf176d5df99ebcb7d266689bbbcb8236a3ae0a43848f750fb76bb4e5ce4f54fe8. Chain 2 (Bitcoin): anchored in block 960254 (2026-07-30T12:06:10Z), 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/NLG620611703.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8dfa88aacf6b1e8882398e99ccf9cf3fe898550b8b5bace97c95ff5fe43484b2. Chain 2 (Bitcoin): anchored in block 960509 (2026-08-01T04:30:37Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLG620611378.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82b171d714f9387b82af155811f8e0d632ee3ec502fdcbaa887bd0f451e16679. 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/NLG620604063.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58405fa33b64769deb970cac5d173863cd314f58783c9b1814d0ea12bdcd3103. 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/NLG620604064.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0474b05caaf0cad11d1028feabe722e46c7ebf5475dc6e330fe68aca212b3603. 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/NLG620604065.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf201897592ccec82f783c585d0e96899584ebf01243817471f5daf5f91c0794. 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/NLG620604066.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x117faa192aa3c65d4731c4e2c2615ee96cb790949bbca3e0494643d6115b02f8. 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/NLG620604067.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0aba6131f0de86a1b8a96f4afdad224e0fa5ee454110f86292396faef72dc22d. 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/NLG620604068.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8da38b692d20c45442d46d607ff164177bbc6ef59a60d1116a4e71638ea8b592. 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/NLG620604069.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26f4de9082fb5a915b90f4064c3a8a8b798db924b88cab0767abb6269028f7be. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-07T16:07:00Z), 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/NLG620604070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x438ccd56cd53d3dc8143b88b25b17a3ee1c7fbfe9cd942c2dffacbd787a21536. 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/NLG620604071.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa58bcbbac7c01a43a4f18ea1350e714e8aad9c5c56807d55479b7686d3909bee. 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/NLG620604072.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x604ad16adae5d9e1227790f352f7e7ec7df0b17a83fe8e200b0c1c916e36ae0e. Chain 2 (Bitcoin): anchored in block 957041 (2026-07-07T13:25:45Z), 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/NLG620604073.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6bb57a671135f082d0b4b0960045c3843d7928fdbaf383cf6ae5960df529c25b. Chain 2 (Bitcoin): anchored in block 960150 (2026-07-29T21:51:49Z), 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/NLG620604074.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb26b841a7b3805eb3060f3716bcf8dac8911d3d4d6f34b12e4b247fbd87971d0. 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/NLG620604075.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x990fe69cf9e4262318d7006994336be4361976f2bdf4f077b6e514e9919e3e72. Chain 2 (Bitcoin): anchored in block 960095 (2026-07-29T11:07:37Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLG620604076.
Wees stil voor het aangezicht van God: Liederen ter Bemoediging
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f584b3f44edaa1bcdc70ed31a72a4427c833b98c0a8ba2a556ca5ca5ccd406b. 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/QMBZ91612891.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15f87e96e5b486ff3ab014a874cac54f30697fa8e437a0afc117a44756159c7c. 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/QMBZ91612900.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x723a1838f290a57873f1e134cecc8b0947cbdd13edc0cf108a431f71a28093c9. Chain 2 (Bitcoin): anchored in block 960236 (2026-07-30T09:37:10Z), 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/QMBZ91612910.
Zie ik de Bergen: Geliefde geestelijke liederen
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe35e7ffc11e4bcc936d393f2aa7e145a2a49cd24feb1ab51ad1118890cc3b22b. 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/NLG620600518.
Christus is opgestaan; Daar juicht een toon
Chr. Gem. Zangver. "Looft den Heer", Notter
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x718da1b2bd4ab24f98950272a93cd913eb9c2a7b77dc628b0d2bd357b50e7e7e. 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/NLG620600428.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02f0b078144d14dda2c949ea5f27f955dd26a92ee9b327a115bc43e4f446d391. Chain 2 (Bitcoin): anchored in block 960145 (2026-07-29T21:13:37Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLG620600429.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0d87742685c4d30de087cf39ab79941368a2047fdf0524b45168c205a7a5220. 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/NLG620600430.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x261f1461e684949a9f62aa357002bd40788580e84430469fb77e5ee010b490ba. Chain 2 (Bitcoin): anchored in block 960236 (2026-07-30T09:37:10Z), 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/NLG620600431.
Zangkoor Vrije Evangelische Kerk Nijverdal
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40697a15454181f9dc1acd240979dab3d634f54f0a5b9d586c450611a9aba675. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLG620600432.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc79fa9013dc051061eb1e8de0ec0ed8a8b1ffb906fd7ade0f81a9e9d595815e. Chain 2 (Bitcoin): anchored in block 960117 (2026-07-29T14:28:24Z), 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/NLG620600433.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc5a76f35d766cebcdccf0a796dab3db780bcd1ad3970cbd17e11a7bb83aae6a. 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/NLG620600435.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5d6c4d602f62ccc82202b416010cbba4e80bc7f4d7c8a59330883708b1802d2. Chain 2 (Bitcoin): anchored in block 960284 (2026-07-30T17:23:26Z), 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/NLG620600437.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3295fb29df8ff1ae3c4c1645f6ddd7c21a22d0ca42a6a9d8d43d66ff9056e551. 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/NLG620600438.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x619963cc97d312163af987804af48be46d060028e71d5009dec6696ee7f91832. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLG620600439.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0df0d280afd837edff5ad8f40ef6e20b406853e9da58eb32db0e85d05d6345c5. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLG620600440.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52d64e4920ac90452bc2c374d7df88fae08113e629d105034c7ad6704b607db2. 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/NLG620600441.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x919f634b582aeaabea64d0f46553a65eac0d2c363b7fc4ecba3e45c02ec56196. 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/NLG620600443.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6d33e6eb575b0c5fd01754a22421d1af72744279b6ac4870af9da5f9a699030. 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/NLG620600247.
Jan Quintus Zwart; 25 Jaar Dirigent: Koor & Samenzang