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 0x7fac35e7b0f615241f1be1ee154b173c314acce57de0ec665f81c48d7417d6be. Chain 2 (Bitcoin): anchored in block 953605 (2026-06-14T07:39:50Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/1167c04c-d779-49d8-a549-70b4106daad1.json and https://artists.proofprofile.net/proofs/artist/1167c04c-d779-49d8-a549-70b4106daad1.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 0xf7044c95a10b282f29e843c43937093a62319f06aa7bd3cf9f71a846137ad6f9. 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/USHM92441636.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x007af46acdc70b41581c30a7e9c990eec65fa3d61c162cb82724de8b2919de20. 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/USHM92441637.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x796be2d784ad4846d23d7a6e0a61b67357fa1e03df783b8a89c82bb861519bec. 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/USHM92441639.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7be0d33cb3c64b509debb48f2c74811ef78fe953500fbbc04165204c6817b88a. 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/USHM92441640.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f8e920ae6649b3c2d437009cd9efd7e67880a0ecd5c4749ec7e563ca98486ff. Chain 2 (Bitcoin): anchored in block 959144 (2026-07-22T15:38:35Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USHM92441638.
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 0xbf14f3c069c60f35d3a4dfb62d0daa5bd8535ab7e8850b543768150716ca1a35. 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/USL4R2338238.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf13220e370d7ecaf0e34d0d1473bcabc6d86a4f1c0257ec308c26adb5cc5949. 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/USL4R2338239.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5411d5afeb1df32a008e7f34acc65873bc9f3d0b3e25f281a3b2c523d8d61ad. Chain 2 (Bitcoin): anchored in block 959132 (2026-07-22T13:20:46Z), 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/USL4R2338240.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa621281ead8967212a9f115ced7f135167aabdd40549e1c67223d96e69f742e2. Chain 2 (Bitcoin): anchored in block 960111 (2026-07-29T13:21:01Z), 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/USL4R2338241.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0afb09cb0edc20117776001b7701407eb5a8e3439d883cbc875617652e18f705. Chain 2 (Bitcoin): anchored in block 960117 (2026-07-29T14:28:24Z), 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/USL4R2338242.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd56de5627248ae26ea2bb24ac86591048a45d35df1fc55b7eadb81e51b96793. Chain 2 (Bitcoin): anchored in block 957052 (2026-07-07T14:50:41Z), 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/USHM92233866.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93774fb6dd133c82e20dd80c8a701d14b201fdae1cc456a1e9f36081ff38ec99. Chain 2 (Bitcoin): anchored in block 960163 (2026-07-29T23:20:38Z), 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/USHM92233867.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c01d4d9c4316e3d4a788570d7344a71e28f941961c98a64146b33efd94e5550. Chain 2 (Bitcoin): anchored in block 960105 (2026-07-29T12:35:17Z), 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/USHM92233868.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd79f0b7ad5d10837d42ff5aa0a45587d3e0f5bbbd15424c49605a7f12546ca0d. Chain 2 (Bitcoin): anchored in block 960108 (2026-07-29T13:09:35Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USHM92233869.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb57b7a61c0d669e66114ab0df546eb970d1ed31cb91524555e082a3c16612be6. 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/USCGJ2230360.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee743db92b089044a2cd1f63fe7098a4fcc3f3cf2b41a42ed22f3b2e9bdff20e. 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/USCGJ2230361.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc52858ef4e34a62ba5314bb12ed4f5be0eb3a80784e165532ab03f5b2433b7f8. 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/USCGJ2230362.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xabc49472e07e63102a47e3d2e5cf747bd0724d6fb19f92f35c0ef989fa18e169. 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/USCGJ2230364.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2fd51b2eed3902c9557d837d3d38d32b1c4509ecbd22125f67995aadc01a8e14. 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/USCGJ2230363.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0aba2501cae7c4d4d58d59ae817ff3a30e707c6f69b85472e9244fb89d9d9114. 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/USHM92173868.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x609454dcdc4e6d54eb5144d9cb0deb58622454e189c14242b709745197eb320d. 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/USHM92173870.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0cc2d9ea81e0edb7451df1266acd3f9a4ecab6b6b01450c3b49ebc683a51f50. 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/USHM92173871.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5bbb3e70d664e8d0e6222116222ec465a1b0dc8f62aabec9457bf77deaa25b6c. 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/USHM92173872.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2301961055291bcec6b9140fb01eb89012d6f24a60db9ae2436b766162f7980f. Chain 2 (Bitcoin): anchored in block 960095 (2026-07-29T11:07:37Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USHM92173869.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0b5267c5dd56468dcd0cffa39538463db9b9b3eb080f609a04c0077fb0a2ecd. 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/USHM22144226.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5da34bcd3b3f0501c389ad43d634012d9d13085cafcb26a1c9dd37984eec35f7. Chain 2 (Bitcoin): anchored in block 957052 (2026-07-07T14:50:41Z), 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/USHM22144229.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde3174c9e38435217ad86f29a570c2cedb894efa98294e52be3b3b001b1470a8. Chain 2 (Bitcoin): anchored in block 960144 (2026-07-29T21:09:47Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USHM22144227.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x153f83945b2ed0deb22f3bd9c3dbd76267bf7677a288c8d7e85e3e781fa554ed. Chain 2 (Bitcoin): anchored in block 960121 (2026-07-29T15:22:21Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USHM22144228.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10bdfa1fb64b4e293400a0cf09f9b5b1287f7d10ed341d934cdcbe32547d6ac9. 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/USCGH2155874.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9831061d566c64bf8e8edad053e8da37c5359cb71713480e2c9d48665af2746. 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/USCGH2155875.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6fdc47109cd304ec2731d2f0a37a1db195771515d04ea3af7dc165dd3276a19. 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/USCGH2155877.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8da3733b38cd780ff94a6573ca1db114c13831015baf0e2eb4124914f2f9a2c. Chain 2 (Bitcoin): anchored in block 960108 (2026-07-29T13:09:35Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USCGH2155876.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7579799c08558411ba797abdc239280ddba49d5b6774f2653176c9d397f7749e. 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/USL4R2049157.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61bd2a4a7e47b42d82f74981d50c9bdadaffa32f9cb6a70ac33a39e32e26fc20. 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/USL4R2049159.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9dcbaa7f5df875f2e1b663f68a0ef6bb16758442c1d3cd838ae595a0e50dff1. 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/USL4R2049160.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f3eb06622c0b0b49773cf72f10eac6a758cb7d5dbff15335ca5d4477241f6b1. Chain 2 (Bitcoin): anchored in block 959152 (2026-07-22T19:01:46Z), 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/USL4R2049158.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b564e668baef8be5f5fddcc3a6caf2b3e037f82762e4952c2af89440acc04b1. Chain 2 (Bitcoin): anchored in block 959155 (2026-07-22T19:23:05Z), 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/USL4R2049161.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13a4b85db943024cb0d250ac263df28384db40760771d0fe7a452e9cda15c61c. 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/USCGJ2036436.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf50e13904005f099b54e44742b52062120abfd2b53c6dbf0c27dbc4a8845ea2c. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/USCGJ2036437.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x431222747822965d4a205cf3e26e90185ac2c81d8e45cf6e3a59de07db5626bf. 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/USCGJ2036435.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2fd86f8b6f30dcac411b7ae3e24bb23d9c2ab91578faee26d9b1edf265b9c47. Chain 2 (Bitcoin): anchored in block 959152 (2026-07-22T19:04:27Z), 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/USCGJ2036438.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11481e8f56c2432210074125af31a23f76ced3f34340590dc8435eafa4966813. Chain 2 (Bitcoin): anchored in block 959159 (2026-07-22T17:48:40Z), 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/USCGJ2036439.