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 0x63a98cc3c4b9722dcdb1d97bf434cb4aaf85604a1e47b18f8b5fed7d96c288d9. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/28fad466-73e5-4f2b-8cda-c1a33de57de4.json and https://artists.proofprofile.net/proofs/artist/28fad466-73e5-4f2b-8cda-c1a33de57de4.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 0xa0e0d244f693acbbe4edc83f3db7be254f323083b0a4c0397ff65f0526c6f701. 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/GBLV62119344.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2fd7d0efe431290afdd9a321cad912be4acdef576faf5b4d7271d91060aa8e3d. 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/GBLV62119345.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x504e1ce48d49fba2f6001ce4f882d698d16f449411a53a2ffa8cb1b9956fe6cc. 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/GBLV62119346.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea29ec65d2c06160062c93cfde26fe5b271313b24194da8ab6fd6659764807af. 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/GBLV62119347.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90c79900f1adc4fbba9fd07db5044832b1a3c276559ab335412895f77bfb99a6. 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/GBLV62119348.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf174d1e759fcaa47e73855cd6e57fca32d7c8701bd5ec5614c2d30492dbde815. 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/GBLV62119349.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec00840d9ecb5152f48dc8a768864ffdb40bac10aeaa2f1035b393ac5eb2c7ab. 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/GBLV62119350.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d0010bcd0ff634b100829cf6ce3ee620efb7f925f39a7f0bfa04911b8635ff5. 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/GBLV62119351.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c0add7b405a9b0b7fbcab2d3d3a58066197bf68edd91e49a0a7bc41e86a903d. 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/GBLV62119352.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0249195eea92dcd217629f44aa8b1d6428b4c2dbe7033781428517dcf53f5e4. 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/QZTB72444881.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcfd30c29efc43d42dea95eaad8490e2694659c1ec4c3b464eda1839ca45f2c35. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZNWY2417481.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45876d143989bb64488056992acdea2e175eaf6c11e5aaf27a2fa7fff403d67b. 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/QZFZ62499327.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a49c926964daa6e5f6e08da4a6ef49f729d173e3cd61b28c7d429ca055eebe2. 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/QZFZ62499542.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1c87076d9a62999c2ea95278949c4e85fa88f7b53966e8cb8dea9fcfbc989c1. 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/QZWFJ2380606.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef8e697ec1d73e181100fea581e5767bca4ea2cc6d621a1608c806f08ed9ad07. 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/QM3DF2283922.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96a2821cdf02bb0f52e7fc6447bb92e7f2b4b562f3aa982fc946735bb741dcbf. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZNWR2364192.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfdbea64f28aaa07f1b7fa0538cf4a2be251f9f9fe559ced977bac8a73b1dd1a7. 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/QZNWV2238155.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4832199a83adbae42158e7e4c3afc1854c8738d305f889a64a709fbc84726094. 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/FR9Z62100976.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcad3b851d3fa533d86a83030cf18a204aee4d5e3019fa78fd22b2f2fad7e0cd1. 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/FR9Z62100975.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75d28d0f80f81b4cbee2ce2523a1d1044b8c4aba17afc4cfe2c0467525e1f8ba. 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/FR9Z62100974.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaaf1cf45a580618eb1d985f640f568d774e0265abf5ad9af1da94adc81682028. 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/QZHN72227803.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb63d39b1057f5beabf76362e88b8d5ac9ebc5983a39ca86461349f01f1636700. 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/US3DF2237930.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7dda7d413c78e88c8c63f53616c85d2dcae75a818fe665ed82e93da7af27010e. 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/QZK6G2169063.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2162be76cc6bb5d0167522f71367ab649d10c8cb0b6624dd4663f1890e0657bb. 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/QZK6P2135429.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03e848d10c62f986522b508bc336f97b1e067fca94d30a70ccd4d1f324e7e414. 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/UKZGC2404767.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd05e79b11f1f2acbdb3bceb57fb31718044a92e9f223bd336ec0ac48693a4da3. 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/UKZGC2404768.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf9d4d5982a631df6d18644326f9f6925f58e09a65badb7fd788f0b7f24a6e1a. 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/UKZGC2404769.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86be6a06ac22ed75d33f99f880b7ca563a9a69f8f806bc8eb910013ce25b3166. 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/UKZGC2404770.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27ed20dd15f639730480b02d15b0640c6810bbd75e3d3c48991200bff3294c92. 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/UKZGC2404771.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x931a003974c6a603381c6904fde14f327df39dd5a7e345fbc5f7415d2369aa21. 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/UKZGC2404772.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa587d224b88f2ac5b7fc8978eb5b0a0329e706cb8427a721cafc1bbf484ed96b. 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/UKZGC2404773.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0f7f9e8161359766159e5874095ce6e2368c70ea8c6a4bcf11aebac27a2c83c. 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/UKZGC2404774.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b7c0bbf862750643986b8f602ea19523cde12e33b013a5aa15d2ea372cc962d. 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/UKZGC2404775.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6b08f4257bff1fc387b7b5797cdb70b6cc2ff38dcd156a285ab6a6c30642712. 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/UKZGC2404776.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01ad49f4aefbfd51617bebaa91cb8a0605c457c714985ff7c8b5074ac6f0cf8f. 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/UKZGC2404777.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x584841226c81cb1e805b3eff6b89374b19aeddb116dedd3a617e9bae5f6f9dbc. 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/UKZGC2404778.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b0e29ca559482b90772ffb5f3fbdbf6047c8c0a0d25ecf951481c339b70db4f. 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/UKZGC2404779.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05e4a40cbfcecf6b9c1be3e26e3cf7027084ca2300c1b49ebf7c42ecd41df32d. 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/UKZGC2404780.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8601436c9694373fc24f2c8e650f069c788aac46017685cf108e23c2c6f4eafe. 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/UKZGC2404781.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f3c346f30ccacb61ca56322467c031de4022facf1492bd108ef8ac626f1ba0b. 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/QZK6J2120027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e72218fbc55a18fb2b275d35b6e13b45c7922466552e645fbbebf6a1a269b37. 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/QZK6J2120028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc18d59e7e6afb5efbab799acc22d530f13575ffb05b222bb7e12bfb0ae113c37. 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/QZK6J2120029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74e9e2911ab14cf71c90a47848ffc3701d21963fec3afb544488e0aecfa6dd17. 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/QZK6J2120030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ef92f43bec159ede12ce06388d5f3c2b9bcdce513251374c9cc4309e8f2de44. Chain 2 (Bitcoin): anchored in block 957075 (2026-07-07T18:50:38Z), 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/QZK6J2120031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x415ec0751ccad396978a43fc4d732dd797d4825c59496dc1b9a61f676fa39ce5. 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/QZK6J2120032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2e49dc8bb94244c105a10f90035a928cd22ac87c826404fa289af664e87678e. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-13T07:53:33Z), 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/QZK6J2120033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x404340d83ed39c3883af8337a5c3b27527251f725116d526420f82e4d43f8228. 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/QZK6J2120034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x409921f5fabca5536fe34ff0ab601a310817d404240966d5ff8a89aa63018d3f. 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/QZK6J2120035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0c297e0ca0317fbd974107a60c5d8c486257e2789f598e1581a2449e379f763. 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/QZK6J2120036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca99eb091af7c031ece5937773c11a5306d8c02a5d1f4157d0c0cb3a3ed29e67. 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/QZK6J2120037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1866d0708555928d20460f6d257233b9ba685a28a17fb2250545a186c02d8f2b. 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/QZK6J2120038.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83d660a221faf924f575b64d3cd3bcd2c8d20eea758b9af29bf782bb421e524e. 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/QM3DF2159434.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd027c2c2d082b22bc8bb18f5988eebee5ceae99eb850aefc5e1a1174bfe4deea. 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/QM3DF2159435.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9df09d7549cada424773908441f5bfc5f120034ebdbaece1c2623cfd8c1b88da. 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/QM3DF2159436.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xada96f15437f036041ffed791e3b9a7aa8dc81337566e77d5e279b0762e98166. 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/QM3DF2159437.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf7baea7c998f95376d2637b4f8774d29f1382e405c26b7b893cb0ae2930337c. 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/QM3DF2159441.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3cd1e763b05e3a67a98b818d947cd9026b44a5ef230a7c8ce54811fc94c4cfc. 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/QM3DF2159443.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d9d895a8f4e6ccf517cd4eee9674d0928d34574b02819c2b80fe44242c73bfc. 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/QM3DF2159444.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb2bfe1ba81c3adec4f419a68c3ce006f77a796ecb26971d423581b9a7406964. 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/QM3DF2159442.
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 0x2236c00b1c94bb3a45df021a6bbbf3ef4a0ece6287964d59f76ac77ee169e1e3. 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/BCD4N2200038.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbcfa704a861ae695aacf9276e6f715014281919e340643859c05e9c805d96ae0. 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/BCD4N2200039.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52f09221db2e57ab4c934912b0b40c94622a8cb7b8e23bc66d918a5cf3039abc. 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/BCD4N2200040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87072f221a41124ca4a3a343c6a4dbd88f332ffd865bf33eac6d3a9ee83a4a09. 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/BCD4N2200041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ae0bdb5ce9ebdf30294e0adddfc354b55f0633559e4dd3eef3c90cdcafe54be. 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/BCD4N2200042.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2561f1be45d586c85f68b7acfd5a9ad404bde0ba01051e8f3a02a65a8544837. 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/BCD4N2200043.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb15705bd0c21b6c503132b5c08776a26266a7a2e62320c7b1374f546e78cc325. 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/BCD4N2200044.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0671d2f5f8ae88cbe746425cd735d4ad0627f59c1a4629351876bd88603eff01. 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/BCD4N2200045.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd5cef97aaf6b4280e260ee199d1d20a9d1f698017ce780365453bda3ca01b58. 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/BCD4N2200046.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3e8117167c64db581a3f4a8b6c97da4d882cc5867e966f139259cf5f5d31fa3. 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/BCD4N2200047.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48aeb08306214c9cfa5a853d0c759db037898e7a3c0ed92165f398b65a7b6ac4. 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/BCD4N2200048.