Maria Fiselier (born 17 April 1988) is a Dutch mezzo-soprano. Biography Fiselier graduated from the Royal Conservatory in The Hague in 2013 with the distinction 'Artistry and integrity in performin
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 0x767480c633bbe2bfc48e7c11ec530f22dbfc27ed40eb4ecfb412e26ca241ebbd. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/318790c1-993d-467c-b22a-2d85ef3b708b.json and https://artists.proofprofile.net/proofs/artist/318790c1-993d-467c-b22a-2d85ef3b708b.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
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 0x4ba64a34bc602c21dab8e4cf723dba6d1abd14779fbcb89c54698c5df9bb7f8b. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/NLSU32200122.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d74cedc6c9fdaba47594fba6706e16cab522607a1afb3d5cf065e9c53e1357a. 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/NLSU32200123.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x834d6e73b07d08450cd806505c1a39debea0e1def3d5b878a9c9d3bb8b8f2c90. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/NLSU32200124.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2afc863bdc31f767fdbfd2981fd6ab9727c5d78bdab8b777e528e1dec3439544. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/NLSU32200125.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53e77e841cc1c014c49630e21d0aa0cdf7cf280d6f475a5ae1f1f509b50e1d61. 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/NLSU32200126.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e3aa0f607f8a7ef98f2ed8a540f1b849195655bf084f56b1f9447aa742f1b8c. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/NLSU32200093.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45e8072cb0efed35146c3bc28fb4f2e8fbf10f706928c5df5c39b1edf8016416. 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/NLSU32200127.
Les Bienveillantes, Air: max wie hast du schlafen können
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f1bede9c88a3229c0545cc671377cfed5b8043351ad39674e35dcbe70eaa7e1. 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/NLSU31800009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe705e9017c4dea42346e8183fd1e42f5fbfe497126c361ce1bdb0b54997d9473. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/NLSU31800003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec7f370062f38aa62bbf009012f14f898e09a32337366e655898a506ea9b1b39. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/NLSU31800015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab486bcfcf2fe9f9a1a1532aba39ba6e296595114599ed18542da73c26ab44b1. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/NLSU31800030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf349212fd77744e2da0e0a01387fe1c91c149fd46fc25f31afa0d62b0cc2e55f. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/NLSU31800043.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa2045e7628233f3e855a4a829376373afdc009e8b23f6616559aa73c504e192. 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/NLSU31800047.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf28140fae59c49b491103e41060d7e180b5d5cb84a072f46a832acc096b624f3. 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/NLC7E1400016.
Xerxes, Hwv 40, Akte 1: Ombra Mai Fu (De Plantaan)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbead7555e3fb9ade007e3da2aff17fc5b9e9f60214eadc86f6465f8b721a4713. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/NLC7E1400012.
Beste Zangers Seizoen 11 (Aflevering 8 - Duetten)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf349212fd77744e2da0e0a01387fe1c91c149fd46fc25f31afa0d62b0cc2e55f. 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/NLSU31800043.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20fd3e55c9b0796378db38ea8a0e6e46cc7a1baf5f03e2ea9d1da005611583d6. 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/NLSU31800044.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdfdc3894890e530b1968a3fc0b7eaa837586a46717fb724f196cbb07c057ca4c. 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/NLSU31800045.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79af06fbad6f6a6c88672d0cf23b4ce1f0c3cb66464576b51f8f65b235fbb124. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/NLSU31800046.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa2045e7628233f3e855a4a829376373afdc009e8b23f6616559aa73c504e192. 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/NLSU31800047.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ff986e465010d1512c8932ff4b817ac7e557a7c54b593f60883f5e1e57db773. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/NLSU31800048.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2bdf329243da9aac06fb6164dcb557a89c4c0c4d7d12abe89dc826cb85b82dd2. 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/NLSU31800049.
Beste Zangers Seizoen 11 (Aflevering 5 - Hoofdartiest Glen Faria)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x084446d559a0b5392c1e686e60ae06f1f5ede7bec1cd80699cee3646eef3bf64. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/NLSU31800031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b622ddcf55f19b67ad2a1338023776b37c8bb838cf5543e08c7eee3a6f783a6. 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/NLSU31800032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2533ccc07174bef025974726176aedc0c1606425fe4bf89d01a52b26ffafd0a4. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/NLSU31800033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x397afae3ceff64a6770f0d8f9b8892236c77c6081a4dd077fe1d2d3cfabb652c. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/NLSU31800035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c47aec24d6c760fc21e581cd32c2b32b7ceedd6aae6c13fbc633737a0ee23e0. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/NLSU31800036.
Beste Zangers Seizoen 11 (Aflevering 1 - Hoofdartiest Lee Towers)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a841bd5e49414ab652e6dc029ff65dde5d3de43fb3972f6e974b8118a7b6642. 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/NLSU31800008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab0a3fa439f7fac284fb3cd737a702a285d124c86a4dee1f8250a179a8a062ca. 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/NLSU31800007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f1bede9c88a3229c0545cc671377cfed5b8043351ad39674e35dcbe70eaa7e1. 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/NLSU31800009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xabe5a9d3d00bc965d6a7138739841e4141e58029a5a3be2fa6adb39ea5296f6b. 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/NLSU31800010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6971385479754ff8f62461f270998324cfe9c95bba05d565b4d2196669407aee. 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/NLSU31800011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e3a67f6d4d0f8254134d553bc47a96794765065ed72c4725a716cf52bac0e68. 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/NLSU31800012.
Beste Zangers Seizoen 11 (Aflevering 4 - Hoofdartiest Davina Michelle)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12949937f7f7eaea2a04ae278c3acdd55ddff28c5a44c75e6ea5924633b340d7. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/NLSU31800025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee39ace6b3891caebb38eb9ee7dac74092e62588373fdb53e9cc11ae35d3aa68. 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/NLSU31800026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d40991e38ae3a7e07dfe171d0b3035779228ed7a0389fea2d30a29846bce090. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/NLSU31800027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab486bcfcf2fe9f9a1a1532aba39ba6e296595114599ed18542da73c26ab44b1. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/NLSU31800030.
Beste Zangers Seizoen 11 (Aflevering 3 - Hoofdartiest Tino Martin)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x152eb164e568e6028b538bcde8541922ff1367983052baedd9193aa673548fcd. 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/NLSU31800013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa087fe8e885eb95f886acb2cb2e05a06ccb673e8e6fdb2b30667cdf4bfd775cf. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/NLSU31800014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec7f370062f38aa62bbf009012f14f898e09a32337366e655898a506ea9b1b39. 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/NLSU31800015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ecbbcd35ae60fb7069b9aa7d93734190dbb33c6fa275ab1e09316c973b52d6d. 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/NLSU31800016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25c3dd3a6d13c0809d797bdcb82a3202014ca7de99f68f104eff444ae489e315. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/NLSU31800017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1df2cf7397c6f0d998d9539ab697bd58305d7519066c8a167e6018c004fc0961. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/NLSU31800018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab0a3fa439f7fac284fb3cd737a702a285d124c86a4dee1f8250a179a8a062ca. 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/NLSU31800007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a841bd5e49414ab652e6dc029ff65dde5d3de43fb3972f6e974b8118a7b6642. Chain 2 (Bitcoin): anchored in block 957052 (2026-07-07T14:50:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLSU31800008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1df2cf7397c6f0d998d9539ab697bd58305d7519066c8a167e6018c004fc0961. 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/NLSU31800018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa087fe8e885eb95f886acb2cb2e05a06ccb673e8e6fdb2b30667cdf4bfd775cf. 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/NLSU31800014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x152eb164e568e6028b538bcde8541922ff1367983052baedd9193aa673548fcd. 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/NLSU31800013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4be9b70b564dd7d90aa9d8298817ed8a8bb258d0b000455a43193d444b22127. 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/NLSU31800004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab486bcfcf2fe9f9a1a1532aba39ba6e296595114599ed18542da73c26ab44b1. 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/NLSU31800030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5108e0339f2fe694083d8cd844926f4f4f2c4480df29950958b023d23dce600a. 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/NLSU31800001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x210ceab7dec03815a8e2ba2a0d5e9f6212d80e0cc0d6168ad35c5c69f7cb7f21. 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/NLSU31800020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25c3dd3a6d13c0809d797bdcb82a3202014ca7de99f68f104eff444ae489e315. 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/NLSU31800017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87a73c1c61eebdd312aeb5066303abc1c38c2c3652cb50bd7e48576cb06d9990. 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/NLSU31800005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c47aec24d6c760fc21e581cd32c2b32b7ceedd6aae6c13fbc633737a0ee23e0. Chain 2 (Bitcoin): anchored in block 957055 (2026-07-07T15:12:44Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLSU31800036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6971385479754ff8f62461f270998324cfe9c95bba05d565b4d2196669407aee. 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/NLSU31800011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe705e9017c4dea42346e8183fd1e42f5fbfe497126c361ce1bdb0b54997d9473. 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/NLSU31800003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x905ac239f92fc1f37cc0a4b2f7cc5322d98e1b922b55a9eeb528999b3a5cac85. 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/NLSU31800040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd18e3c9e257fd193354fe6cd05cc3c02871bc121e009735addb46a6927bf8f3b. 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/NLSU31800039.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d40991e38ae3a7e07dfe171d0b3035779228ed7a0389fea2d30a29846bce090. 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/NLSU31800027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2bdf329243da9aac06fb6164dcb557a89c4c0c4d7d12abe89dc826cb85b82dd2. 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/NLSU31800049.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20fd3e55c9b0796378db38ea8a0e6e46cc7a1baf5f03e2ea9d1da005611583d6. 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/NLSU31800044.
Beste Zangers Seizoen 11 (Aflevering 7 - Hoofdartiest Alain Clark)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd18e3c9e257fd193354fe6cd05cc3c02871bc121e009735addb46a6927bf8f3b. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/NLSU31800039.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x905ac239f92fc1f37cc0a4b2f7cc5322d98e1b922b55a9eeb528999b3a5cac85. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/NLSU31800040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9cc9de8aaaeb09fad52c75677c075aa362850ebbbcb36257166c36c5eaedc900. 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/NLSU31800041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x193a5014d2b60e58b2e645262dac9b6beea6ecb1642c3fcaba2429416bf5932f. 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/NLSU31800042.
Beste Zangers Seizoen 11 (Aflevering 2 - Hoofdartiest Trijntje Oosterhuis)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5108e0339f2fe694083d8cd844926f4f4f2c4480df29950958b023d23dce600a. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/NLSU31800001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4be9b70b564dd7d90aa9d8298817ed8a8bb258d0b000455a43193d444b22127. 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/NLSU31800004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe705e9017c4dea42346e8183fd1e42f5fbfe497126c361ce1bdb0b54997d9473. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/NLSU31800003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcddf264d574efaf86ccffa22819d24f507d3c68e557e1d097106f4c11e6bda7d. 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/NLSU31800002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87a73c1c61eebdd312aeb5066303abc1c38c2c3652cb50bd7e48576cb06d9990. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/NLSU31800005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6971385479754ff8f62461f270998324cfe9c95bba05d565b4d2196669407aee. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLSU31800011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1df2cf7397c6f0d998d9539ab697bd58305d7519066c8a167e6018c004fc0961. 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/NLSU31800018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee39ace6b3891caebb38eb9ee7dac74092e62588373fdb53e9cc11ae35d3aa68. 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/NLSU31800026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x397afae3ceff64a6770f0d8f9b8892236c77c6081a4dd077fe1d2d3cfabb652c. 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/NLSU31800035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x210ceab7dec03815a8e2ba2a0d5e9f6212d80e0cc0d6168ad35c5c69f7cb7f21. 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/NLSU31800020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa2045e7628233f3e855a4a829376373afdc009e8b23f6616559aa73c504e192. 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/NLSU31800047.