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 0x8a8448b198bb99a81f340f5be2ed8645239209285bbbea2b74ab2d4568796622. 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/2f44a74c-df66-4784-97f2-d38e39afa11b.json and https://artists.proofprofile.net/proofs/artist/2f44a74c-df66-4784-97f2-d38e39afa11b.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 0x0314de328eb0991ed51cb83e97b00105bd65cc1534ddcf57c765d7639834a70b. 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/QZFYY2183519.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x912c408b31e0b1a79f9a898aedc44e037cfacbf7d4a412f124dcfadbd611897b. 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/QZFYY2181044.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1e9af32e292477c2a226bca18dc521c6508bee46e39b0c353838ffe5d7ed9e6. 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/QZFYY2181046.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47eff51c20696f4c7d8f5372fd41d07b1b2c85205f54259ef08d5fc0095e5b14. 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/QZFYY2181048.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc51ed81b347c10f7a9a4b767d16a5e1a960a55a3afaef3867e81dfebc82f2cb8. 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/QZFYY2181049.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4086a99ceb5fd46fdddf428d857715bfef8b1ec586341dc1fe2d806768c3e584. 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/QZFYY2181054.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1a0d094e091b83d9f5640e0834a41ca93fba7280009e68546068806f39c30cd. 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/QZFYY2181060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa02ef14c86c61af48637e66f2edd5a22e4904ab7faf6b2524800c37521fb2d67. 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/USQZ31103104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x063b665cb9f16b1cb05edf9994ebdff472ee77e10f2e5043e218ef15c09ab622. 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/USQZ31103107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d13131e230b73658a8b873a8ab177605153ae0755f3d096707ca85c61bfed26. 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/USQZ31103110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd87d4d31f1ec2daa392b0fe98376e2422f76a6e71ca4e6c7aba87ec7d45ba4d. 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/USJ3V1282773.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad42f803b07a7eb2078d63de9b978a97833a8d8734435a207589338fc37f8cd0. 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/USJ3V1282776.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x342639a0787820cebf84872bac8bdf42a85494fe36c2ef8b700d1f397d679a2c. 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/USJ3V1282779.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xefea367e30c540eff0b586d4d29ddfac863e4641e8b8980382fb796228030508. 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/USJ3V1282781.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc117fd7d885bec5af7db6d5296cd045f539ede2841ee3ea5706e1a7f0441f88b. Chain 2 (Bitcoin): anchored in block 959128 (2026-07-22T14:53:19Z), 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/USJ3V1278991.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3720416657521476576324b305c9b325ce3031d9c61a7cc0e17909f54329ce6a. 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/USJ3V1278992.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a0be335646e951762fba993d3b4b2b6f6514aa0748fd96987f7587bf1690ba8. 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/USJ3V1278996.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea4e3be8841c4e81c2e10eb8b115361f7cd44a7d1cccddfa67df43996021006f. 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/USQZ30902101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0432acfcfd03ac1000fa5a9b6f98fcbdc582e166fa975040cbf3f8a2a6bef395. 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/USQZ30902102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24c50968a9203897ff826a31fcb0692efa7b2ec25b027606f389a7f5c23a078b. 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/USQZ30902103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x481b8eb7778443924735f4283c0cbda1a7b00a317882c5e75dfa4ab1eb249a7f. 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/USQZ30902104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6fe8f8e4a711a18c8e2fcf31f1db6b1f0dc0d925ff7f679bd185c4cb099d2767. 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/USQZ30902105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73f535f9d7aa8d9bbec3ae5a24537002b76a8126722f3fe1c60cd8b937d6fcaa. Chain 2 (Bitcoin): anchored in block 954130 (2026-06-17T19:07:14Z), registered by our 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/USQZ30901801.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f95c592cf3e30571aca87d9ff250952b5df47345001dfbc35c88d0a23d1807d. 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/USQZ30901802.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xccd310f5065fbd392e4fd4d95f6ff3e266aecbd629ac318681c28a01d2eb2ce1. 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/USQZ30901803.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd47bb9e23270cb180b5396ad60076045930b354a2824864ebc40bbc27876b8c8. 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/USQZ30901804.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x585552d5e46cecd90caad2910bc4b3ebe5435b2cb5a9821144043d1daafb97ef. 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/USQZ30901805.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30a970e83f9380884846a3e94cae156197fdfe83f7daf0461c56093706bffd3d. 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/USQZ30901401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0975d39bedd38b220658a5fa7c6d33c8afecd2acd8023748093967f7edc393d3. 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/USQZ30901301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7021d0b46e0cb7e178faa4766e432fd7c4b957500f940bde447ffc0a8847ede4. 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/USQZ30901302.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30e29761a6cf7a2cb366f998c50770e990e819913d3db9c5d7d57a2ea2729f80. 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/USQZ30901303.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc417bdd7de6b3bbd220892bb92d7485638bfe165efa9a9980369017958ca8ba5. 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/USQZ30901304.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd66f38b1398f06597b4fcdf233b979139bc86ca904f9d2319f2e64a02ba26592. 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/USQZ30901305.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb88f358d41f4ff64ee14d944ae8fe35805dff55ac4e888b620155e547e94240c. 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/USQZ30901306.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00871720f74342294d17f8be81d3975292a8c3f9f6ec0d66241135043fc94334. 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/USQZ30901307.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9d7fbfa97cbae03959bf89bd7d64c327aa537213261e1f1cf71087080394d27. 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/USQZ30901308.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c8865be314edaef6e81084ddc5c4e22375ebdb22113fe63a9a13caafd4c84b6. 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/USQZ30901309.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2a5cd7dd7e3c8219b6d4131cb5e4005616298d961c633e3b689a9afcf8c425f. 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/USQZ30901310.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x293c251b137923f9b89ec65918834f51a2bc44a73da91332eaae1cdb0dda81a5. 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/USQZ30901311.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ddcf637d3273c216a4a63fec7fa2ce1a98e6b0eadddd27b4468008372bdd19e. 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/USQZ30901312.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x292f879fa051562a3cbff264ea17f9d79958dfda87287d1fb8d42a88f20b197a. 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/USQZ30901313.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1fba16f1eb49c46c9331cec28f73b2f335c09f18afeaad1b8bb5d2d8f2fc1f35. 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/USQZ30901314.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa282c37dc97046d356294fa7b09d78aa4c6e816a852bc6931ce49d06e984bdf1. 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/QZTB52352788.