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 0xe1b399d0020e02ca5a335123e1af8f5da2f7bd0d13cfb1eefa62724ab7435ebf. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/93be5bc3-b950-4e15-bb20-36f9c83a0303.json and https://artists.proofprofile.net/proofs/artist/93be5bc3-b950-4e15-bb20-36f9c83a0303.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
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#100_$interklaasliedjes Om Mee Te Zingen
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2022 - Alle Sinterklaasliedjes 6 December
#1 - Kinderliedjes voor Sinterklaas 2023
Alle Kinderliedjes voor Pakjesavond 2023
1 2 3 Alle Sinterklaasliedjes Op Een Rij
Sinterklaasliedjes voor Pakjesavond 2023
A-B-C van de Sint (Alle Sinterklaas Hits Op een Rij)
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 0x559d7c80721655036ce9e99e8b9570390f143fd2517aaab86995b0681485bb79. Chain 2 (Bitcoin): anchored in block 958765 (2026-07-19T20:09:23Z), registered by our 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/ESA012442269.
Kerstmuziek: Feestelijke Melodieën van het Hart
A B C Van De Sint! (Alle Sinterklaasliedjes Op Een Rij)
Allerbeste Sinterklaasliedjes Voor Kids!
Alleen de Beste Sinterklaasliedjes Voor Kids!
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Alle Sinterklaasliedjes Voor Pakjesavond! (Alleen De Beste Sinterklaasliedjes!)
1 - Sinterklaas (Alleen De Beste Sinterklaasliedjes!)
Kerstliederen: Een Muzikale Reis door Feestelijke Tradities
Kerstliederen: Een Muzikale Viering van de Feestdagen
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x803828e8899cbbcb7c2297255ff2816600d62073afbaa25179fe9a3fa80be681. Chain 2 (Bitcoin): anchored in block 957785 (2026-07-13T01:55:31Z), registered by our 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/NLS242300382.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x678e4512cd7eb24a375a6f07ce2761b16a9df51f67e2086ca853175e5bb6bb1d. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T09:44:58Z), 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/NLS242300378.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x958efc5d6f9dec573580f59d1f80427510be1f3612a09674a0123ab3c4c62fa4. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/NLS242300389.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c99def55fa46a0f554efe736bf2721eed950f9cd650bf1d2838f1ab6cc1088a. Chain 2 (Bitcoin): anchored in block 958111 (2026-07-15T06:58:20Z), 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/NLS242300391.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ac1b4c615633412c11c2d777bd4076219e238ac317e17ca68fb7ba2824c4aed. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T15:55:19Z), 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/NLS242300375.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x752f7c8b96775df5eed63a0012554bb256d3f9290c1e52f77eab603fa73e882f. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), registered by our 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/NLS242300377.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1afa70b52af4514df3c0a47d1617e840cf515c232789bc980c5bbcdd174a33f5. Chain 2 (Bitcoin): anchored in block 958263 (2026-07-16T08:19:47Z), registered by our 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/NLS242300376.
Sinterklaas Kapoentje! (Gooi Wat In Mijn Schoentje)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x172e915f4fb32c7c6b1871dbd8bbcfd69f0ba1cf7849acc8c958d54dcdc3ae6f. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T22:52:21Z), registered by our 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/NLS242300392.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe794d184c4501f6649b54d85243cf182bd77844ee919cef5daf54c6f1b609dd9. Chain 2 (Bitcoin): anchored in block 958271 (2026-07-16T11:08:10Z), 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/NLS242300374.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3debddf5417d5fef7bc8269c6cb12070482b5a8840a04daf092dbf49e0fdb409. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/NLS242300386.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd64c7e5e13b65848a4c1150087377eaafa98f2f133330e8164b2eeaa475a06f6. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), registered by our 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/NLS242300380.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa736257e3c6d752e616b6a38a71f5464e9a01ba83402c4a39614ddebc3947b40. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/NLS242300379.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f08095f08d529a35e20a5dba418b98c779c2c2c0b50d90ec91bbcae3ac8fee2. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/NLS242300387.
Zie Ginds Komt De Stoomboot! (Uit Spanje Weer Aan)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb294ab58e19b5d4fb7cc9c1430711175cf5fd895105c95969f44e53b3190ff18. Chain 2 (Bitcoin): anchored in block 958341 (2026-07-17T02:47:01Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLS242300372.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e534d54dba01530007f824f7239f2ec313a988bb761d8721bccff137ac6b61f. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/NLS242300383.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf91f237afaf44ad8695b870836e200708197e0cb2b6f36779cbce3c7116b3bba. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T02:40:43Z), 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/NLS242300373.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b0317591580d5a178fc63a7fd0cbe53cbde00b50f85b2fa6fbe404444802c55. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T02:56:45Z), 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/NLS242300381.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2e7721183682b75c85e7f1e6ed18a9daa24a2fde8ac64f4aeea8df421b8b980. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T23:01:44Z), 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/NLS242300394.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8fda858dc45905ee0177e864c3ef371c6ef832037deb9adfef4b9de35bde241b. Chain 2 (Bitcoin): anchored in block 958390 (2026-07-17T09:35:49Z), 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/NLS242300393.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d7b70000b1dd0dd36cba5c9fd808a412f1683dc9807475ede4b27f08499dc9d. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), registered by our 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/NLS242300384.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdba39c83c75837481aa4415767a4af03f9896976898cc31cc3fc89fca5a82435. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/NLS242300385.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9f620553ddeb4f2c5c7ecc7ad447ad8a2f3fe2debec8cef09cffe69bca4d9cb. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), registered by our 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/NLS242300390.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f3db40de1e4d3e6fd8ff8430b9a6595d95433d243eab43b9f2f23e124ce4ddb. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/NLS242300397.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x229f72524a146f6542ae2e9b7624415823f762c60a544e03ae490271c05d7152. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T09:14:21Z), registered by our 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/NLS242300396.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d2339ae2f7afee139f872d448745a3ec346dac817b59b95713a885a719796ec. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLS242300388.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x262e1bc3d5681d2f714ef1479c7ef781ce8cf59eb3e944a761b454f152c7c7f6. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/NLS242300395.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ddc5fd46c240049c34cdfba223bae80ccc58d1e71615705854b86716167d1f6. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/NLS242300399.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57d269d13a1f1eaf8306afdf22d7a9a7e08092780216e518c88332f674dce29a. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), registered by our 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/NLS242300398.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x843cb46c32ecfee5dedc2c79d42b75b969c24a136c37a705c9817fbb724d914e. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/NLS242300401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14434ca32b564db6342714961c3fc2ce2a359b2cc6231804da26b922c35dc35e. Chain 2 (Bitcoin): anchored in block 958484 (2026-07-18T03:34:53Z), registered by our 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/NLS242300400.
Sinterklaasliedjes 2025 (Alleen De Beste Sinterklaasliedjes!)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50f21e90e3ba3770fd708859905d6f356ac3afcaddd88976332bd9e111834769. 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/NL6HK2300016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd50f6be8fae1b1d1846cef054c8bfcd9e0069e9a5c1b532cdfd2cf5e13c1fd1. 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/NL6HK2300018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x384e4683c10f3bb2b00d0ec405388028754a572851ead71e4030baecbc930891. 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/NL6HK2300019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ccc6b5170714d8172d8e6d3be0e961a384285fc1919c7c797b4bdb3b2aa90dd. 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/NL6HK2300020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd840277c74d594883e7c753997008d51a74cfdccd0a1820e1d7e7a207c68f8e3. 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/NL6HK2300021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa5b62f3caa03085d51c0024e46df3ee833e388b13a91723749067bc736a3f47. 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/NL6HK2300014.
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 0x0632088acf8f950d26a3fefa9abaf72d2c08bde7d30f71a2be83b4747431ad77. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NL6HK2300015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f4dae74bdf587c738d4c26d868caca2387c3a8a9d702bbcd665e8e4899e93a2. 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/NL6HK2300017.