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 0x1817a92da8d9f4fa434c6b5d1ec6867c372ba957517075ee5e0fde81d3dca4c0. 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/7bc161d2-f8dc-439b-94f2-8aedd7061013.json and https://artists.proofprofile.net/proofs/artist/7bc161d2-f8dc-439b-94f2-8aedd7061013.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 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 0xcc76e606896da75bffd97480bca5befcc393eb8a55ce98e322e9e2e051140592. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T14:38:07Z), 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/ESA112427768.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14ba03b900bce015a28a8891d5003a9e8bd468e87f6fa4cc0ae79bdce3f465cd. Chain 2 (Bitcoin): anchored in block 958980 (2026-07-21T07:04:12Z), 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/ESA112427770.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9bd7248202e5386e87c439dd401b82d20c221134f28e34292b426e218b3be218. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ESA112427773.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ad51204b3c1d45c0f5705327571f6eaaf75c5f371fc52f5299bef8180815004. Chain 2 (Bitcoin): anchored in block 957747 (2026-07-12T19:35:06Z), 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/ESA112427779.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90a744b8752f83c3b25a5eb2500aa86da66d98c2e8c9313c725c270156c01a84. Chain 2 (Bitcoin): anchored in block 958455 (2026-07-17T21:28:36Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ESA112431574.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe70ab16e31bbe7f7bc6967cf33fbb91e2b36f94f8a7759fe26f8bb96544601dd. Chain 2 (Bitcoin): anchored in block 959118 (2026-07-22T10:01:58Z), 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/ESA112431575.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0680c1aacc88bf0bd0c7969103aeb0e1448a7b1a249ebed3612a7a67cc772684. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T17:49:48Z), 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/ESA112431577.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5aa681b0a837d004ecf02738d9175fe00640bec26dc779acdf83644f32abbd44. Chain 2 (Bitcoin): anchored in block 958716 (2026-07-19T10:15:55Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ESA112431581.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf475039139a06e7730386af87115acf72bd758141bb0b4204f47ba2b689afbdd. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZNJZ2422567.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc56b83d2e707f8e213fdf1404047e4a15002408fc7fb4665101dbb1831e4785. Chain 2 (Bitcoin): anchored in block 958346 (2026-07-17T01:47:42Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZNJZ2422569.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7d7bfd25e72de8370e5b2ddd10a51087c91619b96b70cfee12be8bd3260be76. 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/QZNJZ2422570.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd83cef4e33b9924eb1450098cc1d77a16d29b97b4e7e871f3f6b39746c7130de. Chain 2 (Bitcoin): anchored in block 958825 (2026-07-20T04:55:29Z), 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/QZNJZ2422571.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3cbc257448927d08bdbf715a02c4c948924ae131afd2ca2537c24fe45d87f6a. Chain 2 (Bitcoin): anchored in block 958901 (2026-07-20T15:07:00Z), 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/QZNJZ2422572.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc039df5caa6cedb92767be780e161469715a98832d1f535ad90892f25d63ba8e. Chain 2 (Bitcoin): anchored in block 958480 (2026-07-18T02:58:58Z), 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/QZNJZ2422573.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08b2fea6160b9600060580deb4be3fa0128c9dbc3da297ff13fe5751aab18a90. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/QZNJZ2422575.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12e01499234c9e82151e98a2abbaf300bed13e412cc8e89c97622580ed7d9ff8. Chain 2 (Bitcoin): anchored in block 957750 (2026-07-12T20:39:38Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZW9L2433547.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43aecd9f288735efd0ec40696d0beac4b629d5ff1d415b77106bbc7709ff8274. Chain 2 (Bitcoin): anchored in block 958346 (2026-07-17T01:47:42Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZW9L2433548.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe607d9652619afbfe96c82fef42959665e9d05f1696782fa154a8af5e08836cf. Chain 2 (Bitcoin): anchored in block 958407 (2026-07-17T12:08:48Z), 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/QZW9L2433549.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x385df7d9b8b588bf4a93e25a38d0a084fa109ff9512d4e7289695fb285db7943. 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/QZW9L2433550.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff9c389afb727f180c91286a1563bf8756537054385d3e4231b56d0a0523172f. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/QZW9L2433551.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9f635809d533656b69b267faff5fb25fc0cb205a257ab1d963858dda3c8a7ca. Chain 2 (Bitcoin): anchored in block 958770 (2026-07-19T19:26:13Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZW9L2433552.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3b1166fb8a9362291c6edf3f08af97bb1ec0a16adcd226654c07426ac49b3bc. Chain 2 (Bitcoin): anchored in block 958775 (2026-07-19T20:13:58Z), 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/QZW9L2433553.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f3940ceb5272ea86dc3542f7c4de1803769f6a493da47c045eec4820ec8bf62. Chain 2 (Bitcoin): anchored in block 958571 (2026-07-18T15:39:25Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/BX4IU2328230.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0a72daa266bc5b3d1ce1636304b7fd549114651982a4f7013d1b3cabafd5b60. Chain 2 (Bitcoin): anchored in block 958714 (2026-07-19T09:51:44Z), 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/QZGLS2507647.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b9fa2955c4c300aa2e7a734e48012ed20be6944c09803a689457691554e2dbc. Chain 2 (Bitcoin): anchored in block 958711 (2026-07-19T09:26:32Z), 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/QZGLS2507648.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01e105b631077e6b303f91881a4bb6cce41c8f13b2667e5626682f8903e4f0c6. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T02:01:41Z), 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/QZGLS2507649.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7874b116cc4ffe2d4d8a133a76e6750fe544f6990a5ef129899fa37a3bfce9a. Chain 2 (Bitcoin): anchored in block 958720 (2026-07-19T10:53:46Z), 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/QZGLS2507650.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1cf0bc7835facd2682b72a31c84a0887807c7d3f196a7fa2813d4613d4aa7f73. Chain 2 (Bitcoin): anchored in block 958607 (2026-07-18T21:01:11Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZGLS2507651.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x449ce2c811534cf15687202ef493a91148d3d1a11407a05a2da64565ad30debd. Chain 2 (Bitcoin): anchored in block 958561 (2026-07-18T14:22:01Z), 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/QZGLS2507652.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69c17e4b508a5382baad7288a016f3f3c992ed1c9eb447960c9909bc41918360. Chain 2 (Bitcoin): anchored in block 956637 (2026-07-04T10:56:23Z), 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/QZGLS2507653.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd46fed548fa6ee618cc187ae1d3d41d33da241a8ed42dfb226349f2d6640d905. Chain 2 (Bitcoin): anchored in block 958526 (2026-07-18T09:09:53Z), 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/QZNJV2598084.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c20548be38c7d5729faf2b256c3f065e019b3d2e329c1488bc30bdefe09ecd8. Chain 2 (Bitcoin): anchored in block 958576 (2026-07-18T16:22:28Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZNJV2598086.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b3f04177c579b443e0535dfeb001d77f024a6b50485b97f9aa4a7468bcc9e01. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T08:20:01Z), 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/QZNJV2598087.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x217f9c5e6db378ceeabc11b778a9dd976a244967c4f2610475dc6acc5bb8676a. 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/QZNJV2598088.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf06b6434976ed254cd4628c9b4752cda6e8c3e3770f74a592aa3fcbea85dc75. Chain 2 (Bitcoin): anchored in block 958600 (2026-07-18T19:24:05Z), 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/QZNJV2598089.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3aff92e70f43c2a70830a8af20e22f0958e165d57b7f8cbe92f123a7dccfc58. Chain 2 (Bitcoin): anchored in block 958650 (2026-07-19T03:36:41Z), 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/QZNJV2598090.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ad8b29961e151efcec075ec323689d88fc21cc94de5e3b6578609d9c1571a51. Chain 2 (Bitcoin): anchored in block 959163 (2026-07-22T18:47:29Z), 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/QZNJV2598091.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c08bb3ee271d770ea2d930c6b45c228c6977faadc9f5c9ae28dcd6ceed15e3d. 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/QZTPX2577730.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd8a63486de94c4d403975116a05b5e695ffa59fb57926bb691332d026541f2e. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZTPX2577731.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd193336734595d5acc2b06eb56349d60bae604d2c60695a2e80c2d064ab21ef. Chain 2 (Bitcoin): anchored in block 958903 (2026-07-20T15:22:45Z), 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/QZTPX2577732.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa669003b151a650fd0375822734fa21d250ee9b78d690db4045101940ccd7f87. Chain 2 (Bitcoin): anchored in block 958650 (2026-07-19T03:36:41Z), 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/QZTPX2577733.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3a45ab4c1ad517c11a9f1e12239ae6fa32a5cbd43cb4a53d694851b9480db70. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/QZTPX2577734.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa37f9720a5b6a9c49788f9d857093668b7c2beb1d9b1f5ed6f5b3df1d236d0a. Chain 2 (Bitcoin): anchored in block 959118 (2026-07-22T10:01:58Z), 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/QZTPX2577735.