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 0xbdd5c874309069ce0db99f2c0d0114c3505667b418c2a2f3547e1e8f4016d4cc. Chain 2 (Bitcoin): anchored in block 953610 (2026-06-14T07:58:09Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/137dfa50-7d1a-4b7f-a08a-6a96f38212d5.json and https://artists.proofprofile.net/proofs/artist/137dfa50-7d1a-4b7f-a08a-6a96f38212d5.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 0xa0ab1a89b59c9e9679056cc0a0e13a5ab0fab4f4e9fc68e7580293ed272b0177. Chain 2 (Bitcoin): anchored in block 957043 (2026-07-07T13:52:39Z), 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/CH6542102706.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x076d32ba5c9e2f9feac4214330e730278075ee90d68e0125cd290cf473387023. 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/CH6542102707.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe9ca6d467abdbb8c7e99392842f8010208885911eb06befc01375774ca29ce0. Chain 2 (Bitcoin): anchored in block 957032 (2026-07-07T11:43:09Z), 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/CH6542102710.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24c99cd73378e8d5da697c2f353ef94fa32c5d366b5415fd1839694346576735. 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/CH6542102714.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c59c8346fdbc5cc2a238e5c863ef9272daacf6bf5a80f32bfacf760c6e208bb. 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/CH6541661879.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc37d87981f72f3cf30cd945211ff1ebbffd3d3bedb3941bb5f9290b2e005258c. 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/CH6541661880.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca09ab54c9aeab0e8cfd19dcf306ea5a28d6630b72ef0152d602549bca66bd57. 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/CH6541661883.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ee199ff6837ed1072c4fe79f5b85ab3a619f4aa6d51c75d45d1cd0cab0ca4a1. 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/CH6541661886.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13c79fdf8af00728db381912d7c32f580a9550fb365291c438fe088290768a32. 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/CH6542104437.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x279d74542af8f3c86625e4088ccebf4ea6d1626695caf21cfd798d797f29843a. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/CH6542104438.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86f38e27e95e1de0ffd88485e95841f49c2569d3597ccdcb4d1d4b1ea16345e3. Chain 2 (Bitcoin): anchored in block 957026 (2026-07-07T11:02:43Z), 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/CH6542104440.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d81eb3e8e1b7099e10d5ee08a4ad25101e0b521c17e7d6711c76f33b5ec6082. 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/CH6542104441.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7d38b9aa76766dfedbdd17013986bd0022b374edeb7bd4470b9d247119a0e33. 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/CH6542104442.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b57947863e9c8a07b48f4c7611143144b2af4b39c01eaaee22b3f26fa7e9ca4. 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/NLCK41092346.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ac96cc4bc1565d9e71acec28dbb4e9e53b6fcebfbb6b5aaf692032d929680ac. 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/QZWFF2325799.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf327bd6452bfe80b8a407849fc3b2827dda4b0e96c9265c83719e5612e94624. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZWFF2325801.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x609dccdf17b7db30cef533087903d91a82a5648afed1e9946384a165ceb72e82. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZWFF2325805.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x957da13e6b7ecc5b9900f16d2167e87aaac18d192c6edacd86c2d124db4c3c60. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZWFF2325806.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9269397a6cbf8861d16290492083dcafafc97e7ab99fc0588509f8d980a127f1. 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/QZDA42139582.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x646ff96e526aa21833f2dcbeb6ae91085b6ca536c3ce0426dbf2167afd0ed256. 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/QZDA42139584.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa99cf4638d3d4d345415a8cd881049ae81993d814d894c6d211d493b0f874c13. 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/QZDA42139585.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa914711dc0569202fabe37d2cb66addac7ab28dd1bf40332dc8b32a35e70161. 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/QZDA42139586.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4126c4de20487079e222eda8e4e593451c21599556fa17808b412c4c6aeed3c. Chain 2 (Bitcoin): anchored in block 960468 (2026-07-31T21:25:57Z), 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/QZDA42139583.
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 0x174560529f6c27afeb8046d7393cea8f3e4c81224788e58c09ccca3452bec345. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZHN32260331.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a9c763c85dca5d7861bdeddd04d1d25a7803b475366d303ade3faf6877e33ad. 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/QZHN32320925.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76e275d0af307eee14f47c14aa09f4b99ec88eda3952dacfebc272e634172d38. Chain 2 (Bitcoin): anchored in block 960340 (2026-07-31T03:15:04Z), 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/QZHN32320915.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaaeea0dd0e55fb60b963b257bca90fe5d049d49e9da73919d9e1aa65168a02a8. Chain 2 (Bitcoin): anchored in block 960209 (2026-07-30T05:15:54Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZHN32320921.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf6eda1b4659b385d30f0182c959d81f1bfb255b6946e4aa1dba7cc485546a27. Chain 2 (Bitcoin): anchored in block 960264 (2026-07-30T14:36:16Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZHN32320927.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x809a0f8cad6e35ad239b3aba055f4abbb1c0be791c049872706f6ad41fa1d742. 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/CH6541662700.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b49103d0567ba7ec4fa7ddecf46ceb59e652c776aa592f686e4a201071f8568. 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/CH6541662701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4263b0a96cdb0f0f677596239201d0f17a6c5f0db0a39f5f10b117feaa678b73. 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/CH6541662703.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52647ed9a10851a5484f269bb1c5f9935eab9a509b8f992635b657b168f7231a. Chain 2 (Bitcoin): anchored in block 957043 (2026-07-07T13:52:39Z), 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/CH6541662705.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed154c5d743f2cf533b8ba62d95ce5b0e572724cee1b2b83eb4aade35c0eecd7. 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/CH6541662706.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe00271b48fb36dbc306eeae18efd78031f06083b732c3e27cddce350f1a58a5. Chain 2 (Bitcoin): anchored in block 959137 (2026-07-22T16:55:48Z), 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/CH6541662702.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c56d795fd35a690f7968f04f4a466857591cb1abf71cba1bbeb478e3420a6f2. 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/QZS652300120.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c1bb2c35ce306cc13fa182771a8849ba18b921eb26d08fd2c1ba0c6324f39c8. 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/QZMHL2387008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5c838ce9573f3acc5328a48ad0afcb0ba4b03f249f02629bd5f22c9caa60546. 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/GBKQU1995711.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04cfa7bdc337b9d880a420294511a256a1612e29228eaf3b77e7afe00adbc180. Chain 2 (Bitcoin): anchored in block 957050 (2026-07-07T14:41:13Z), 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/GBKQU1995714.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe9c52eaca374d4cdb8b5042487b321d80b36ab184c310d7763b8dd1e4848dbc. 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/GBKQU1995721.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcdf11443a3b818c31f149cb2fd03a8fca454db35269c261f9c56c55d0bcd24a3. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLD911200169.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c4338117b45e9de5c6d4dce91c88ad684ee7975ea8fcbb2ad713f83b4d061a6. 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/QZNWZ2335000.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30b6d00ea4149bf211763efafe951c1c7150462a344324942f3efe4f0fcde567. 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/NLCK42235252.