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 0xf56621e6abd55de5f483e2b2174670cf23d565b19652b68549b49bb57532a5ec. 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/d2352068-4b3c-4ad8-8294-5c07afb10d22.json and https://artists.proofprofile.net/proofs/artist/d2352068-4b3c-4ad8-8294-5c07afb10d22.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 0x0b6e1369a131f062b317b78d9f59c9d90686bbda919197bfba5fa65b138c87e5. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZES51802287.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf92b9a891f39a04d9bd9666f3900e822516820e54e0a48d7f329900e24d6a024. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZFZ31918345.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe431b339a22078e59a0c1478fd5c399a4331aa708e42be2c61e05f0d6731d71f. Chain 2 (Bitcoin): anchored in block 958169 (2026-07-15T16:16:18Z), 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/QZHNA1969315.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a734e1f570aa52e6178ec811aca0bc15c14e26aaded275ceaad9e452fee8983. Chain 2 (Bitcoin): anchored in block 958216 (2026-07-16T00:00:34Z), 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/QZFZ22091686.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6504e2be5bf1bda6c79f6e9b8a34d7b1415e4e59085ffda7b32f390ba31ac37. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/QZFZ22091687.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ff7ac3a33863e4ea619d40ce085117ec804e260db860cc1d1b73a5424ac8aec. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/QZFZ22091691.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf67205c6a083c1158f1262c66b40b3af95c8667322fa29eccc522238650a8b67. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZFZ22091692.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6baead0601049a0b1faa019b9ca4881ae39769bd8776b83194b4be02507e0654. Chain 2 (Bitcoin): anchored in block 957872 (2026-07-13T15:39:45Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZFZ22091694.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4253f49c536cb3eca4b31ba3676157ce2deb077e15fae2cd3a5790d68269fdcf. 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/QZFZ22091695.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x628fd5bd5a176e8698560ec9447a0de3357575a0a9814ea3c9b04f3ce01da1df. Chain 2 (Bitcoin): anchored in block 958126 (2026-07-15T08:17:14Z), 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/QZFZ22091696.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5111dce65187401051f812480b30543f5d45ea3a0c0e36679dc9315e0fc3c675. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/QZFZ22091697.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea7e2d928cf2f532b6c94c763d3bd7544dc1cf848e9d7dbba5713f651ee3d840. Chain 2 (Bitcoin): anchored in block 958774 (2026-07-19T20:03:27Z), 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/QZHNC2099245.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71861fc2b8f488cc59697973d753309b703453320adabda33383e04f6ba502a4. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T15:55:19Z), 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/QZMEP2077453.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd75c350da1966791783f382939a24163ac5a52c6d94c8d7872a374765622d1e9. Chain 2 (Bitcoin): anchored in block 957863 (2026-07-13T14:41:15Z), 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/QZMEP2077455.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b6d2e1c72245f7d331108d291fa5ae1e168e5a3501c3190535022e45a969526. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/QZMEP2077458.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11d3bd284a89261e88559a1ba40692f2d46c8b6173e7e3f83ae5c50f91a2a0dd. 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/QZPR92100059.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad5ea67f25c65e3faa82f5e2aaded509fd9ccd54dde865161781d745dfc81b6a. Chain 2 (Bitcoin): anchored in block 958980 (2026-07-21T07:04:12Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZHNA2140560.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8b898461d01951e14f2d43f4eb8733ef2526f0ff53b3d0cb3789ca64d7a9872. Chain 2 (Bitcoin): anchored in block 958975 (2026-07-21T06:12:52Z), 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/QZHNA2140564.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x622909e07fa2c4d328b95224cf4829546f9c7ed87079bbcfe00cec9b56b67be1. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-16T20:12:32Z), 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/QZNWS2109555.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20323edd4f923d3e69b318d94ca579f7f50cd9e2d1f0a7f612c29beeb1ac56cd. Chain 2 (Bitcoin): anchored in block 958355 (2026-07-17T03:11:50Z), 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/QZNWY2122730.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb717dbdf5a19445500ab3120addef2df23602ad0440c27ed665a7e79f67f08f2. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZK6N2289706.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x133ee8d9c6c9c53252db85cfefbf5fa2815e3c6f725b3c16814a0267f95ed447. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/QZK6N2289707.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x173cf36c971ec3cf97317fed6f5f148a70d01b073a256fa8b15228056acdd51e. 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/QZK6N2289712.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f9282a7f0281f9089fcdbe031bbfa8de6d2871accfc8adaf233e6872eac82c4. Chain 2 (Bitcoin): anchored in block 958662 (2026-07-19T04:43:15Z), 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/QZK6N2289713.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c819e1bd6d141a350c2bf069dca43933bcb4a112c11c86baa4b5eaa931bebb8. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/QZTB42283079.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66fea92f55e9ca476d7d4729afe477430941718eb065d912e33a1dd5ac2ff530. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/QZTAW2263768.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde9d04d4f3141c506dadfaef4efae73d2c865643a2775a9a43c41201d1c6f4f4. Chain 2 (Bitcoin): anchored in block 958455 (2026-07-17T21:28:36Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZDA52391165.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f96f0043e079843ee9919513244bfb80972486156835aebc72ab4c8f5a60ded. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZDA52391167.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84158d1559fa16e42d1ff105c62a8cc9da130528ff3fe43610a8bab9f930c1cc. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T08:20:01Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZNJW2425524.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26024e2190a98ac60b896c041df19f07b1251850d9ee71ee46f66c1f4a739c5b. Chain 2 (Bitcoin): anchored in block 958846 (2026-07-20T08:14:15Z), 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/QZNJY2419327.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde797eb471bce975fc78058162bfe7dee52f866a63d8ba85050f6046bec1e733. Chain 2 (Bitcoin): anchored in block 958985 (2026-07-21T08:39:15Z), 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/QZNJZ2404121.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7bf658be370d3c7a340c94f98456cd9d70451c8aab5cba0ba0a9bf00761451a. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZNJZ2404123.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84158d1559fa16e42d1ff105c62a8cc9da130528ff3fe43610a8bab9f930c1cc. Chain 2 (Bitcoin): anchored in block 959043 (2026-07-21T18:40:26Z), 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/QZNJW2425524.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50ede4288090976ca584f3837923bc6220d467a668e835956ea15739c3a8581d. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/QZNJZ2404124.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d1bc6020816bac860552983406349991bf9d7ca7c26b98e22bd203017195ffd. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/QZW9L2499724.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60aa54cdd70ba79184875c272521221f194f934566b1aa240207d0b322a3f974. Chain 2 (Bitcoin): anchored in block 958242 (2026-07-16T05:02:52Z), 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/QZNJW2519181.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb39c67ca14320ad80af45099acc385d084704ddfe9cc50f0100fd27619ed9e61. Chain 2 (Bitcoin): anchored in block 959155 (2026-07-22T16:43:41Z), 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/QZNJW2519182.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1702e18d550b86adcd542c803883fce8d56cd6942a0fcea04dd34ed8bd8b21e. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/QZNJW2519183.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2cacf44184f47cfefea5ad48a53b1e1477dc210f459731ed8acaec47c32cd5ef. Chain 2 (Bitcoin): anchored in block 958349 (2026-07-17T02:28:59Z), 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/QZNJW2519184.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ca6c7a0c3cd360da78c5034fc9cd246c110b4bfe48c39d20c141525b87cfaaa. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T00:53:26Z), 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/QZNJW2519185.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf712ea2367916f88b3a8b07034526c8b7f0d93cf55d821b8debafe7437674c4b. 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/QZTPX2506442.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b6f797cb15589491b17ed03410a62d5a7413b436175a9101f47bfc7921b009d. Chain 2 (Bitcoin): anchored in block 960099 (2026-07-29T11:30:20Z), 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/QZK6F2121834.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8883529d0fbfd131072aa0bcdf9842326d9da7167e27a42e6c0adced2ba31a86. 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/QZ46Z2000026.