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 0xfed172698578ee4f1265a6fa7264e82cda170cc699c3559aef794d07b1b67c93. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/3d8d8d13-5ac0-447d-ba37-9f634b7b1843.json and https://artists.proofprofile.net/proofs/artist/3d8d8d13-5ac0-447d-ba37-9f634b7b1843.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 0xdcf47b6fa55f34f2ccb9f9dee44e65a71b5f72c473dc32d97bc0bab296b027d6. Chain 2 (Bitcoin): anchored in block 958644 (2026-07-19T02:21:25Z), 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/QZK6H2383237.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2e7bc012fac2faccb72fb9503db3ed6d2a400efbba9722139065045a42af9ef. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T16:33:12Z), 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/QZK6H2383238.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab3884815efe77aba1a4ca278d9502d0e2d5cca53a0097a3bca547e3badd368c. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/QZTAS2345497.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5e51f93a7148cdbc51a70e44e3ce26e3807a4cfb65c4d495a416951bdcd04c0. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/QZTAS2345499.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3737236f8cb2de05e21ccfa12dbeebeff8781523983104ff346cc848eb6fa91. 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/QZTB82380847.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x763cfdb3794b6b60cd1f6c5d35effb521326b1bc8507086a1c3da43dd00f2ba8. 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/QZTB82380848.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1068223dda8cac8a3752c8be2517dd135a2a5124331a70887379add5421b512c. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/QZTB82380856.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd387b43dff1329e210c493fa8000aeebbc06522f5ace223b50a45c2c8bebc9fc. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/QZWFF2321681.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcccc2b5da7f58d2793f6ab644ac47d5b9630e340ee3be15ff5ef15be39c7cbc7. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/QZWFF2321682.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f372684a05b3eb8a605943004e452fad498c40c98c2e9249704a827800c7ea6. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/QZAKB2401697.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f38aa39ba075e78baa6528de182096c275409428ccae7d89db3e213412e48f2. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/QZAKB2401700.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x354eb6a0b86d2b457ee382e4bfb42ddc0b94a26093b5c953a3463c2f18823e1b. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/QZQ7M2100441.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f85e811999e1a1911570b7b5fb4b7247b11d230e4f8d411530ddeea72d62010. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/QZQ7M2100437.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe61cf2be999feeff742ff3aa5b38b2a6933fe8ba76f50e2f41bddc0ec6463a50. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/QZQ7M2100448.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3639b296582b0b499829e32f9c5992e735437a8866c4ff0996723e2ff842dce3. Chain 2 (Bitcoin): anchored in block 958461 (2026-07-17T23:18:11Z), 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/QZQ7M2100446.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f3dc0e3b53c93cd233a022743065ebebc6ba86de986af55ea021c86ef84ecea. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/QZQ7M2100440.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1db7529d5009d96559f7916e2fa6bd56069d4d4d445fd3d692e0e8a8228587dd. Chain 2 (Bitcoin): anchored in block 958716 (2026-07-19T10:15:55Z), 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/QZQ7M2100443.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc463c1a8caa128412848dd7413cde642989a03728959f434ed68babac3c7468e. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/QZQ7M2100449.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd207a5fd5df3bde08e23e8af723759242c11319aa51b007a961a7860d12bf8f. Chain 2 (Bitcoin): anchored in block 958838 (2026-07-20T07:01:21Z), 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/QZQ7M2100447.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x055bb59dc17ea573aa39a6b95ace8838ff4b0ca9995eb19f32fb72d8f5fcc7e3. Chain 2 (Bitcoin): anchored in block 958568 (2026-07-18T15:23:47Z), 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/QZQ7M2100439.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5a2756aa73ba35b7190c2a915f94da933f55123c0ad4d6d61c546568931a4b7. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/QZQ7M2100444.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x406998886f22be77dc0575f98024fad9c3ce189927bb623da6fc2c93b2515990. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/QZQ7M2100494.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa12cd48f1ab8eb910676a6b5a96421b2884caff8f35e3d74d5627eb65a22099f. Chain 2 (Bitcoin): anchored in block 958520 (2026-07-18T08:19:09Z), 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/QZQ7M2100495.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe42b4acfa5adda91850ba6c279c112f015f6a8e5f75c3420792fd3753aa2ada. Chain 2 (Bitcoin): anchored in block 958350 (2026-07-17T02:31:22Z), 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/QZQ7M2100498.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc80554dcec1a62f49501796e64c53ba49116f14a1074ae64b5a764361387732e. 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/QZQ7M2100496.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x991e2b26e2eeb81f971e89e79851ff36575e75054ca3804af31addb6870d21e9. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/QZQ7M2100499.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38c696e4ac200f2ed111e338f44cb88bc3e26d155cffa1f75f6076f7a070c7c4. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/QZQ7M2100503.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd992b550586865162c61310dbdf8cf83fd28f44e10be69f0fff2d9268e098eec. Chain 2 (Bitcoin): anchored in block 958218 (2026-07-16T00:33:33Z), 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/QZQ7M2100501.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95b7c83882672b4448bc5c22cca73ce9b72b575503e0554704691bd87269eda2. Chain 2 (Bitcoin): anchored in block 958196 (2026-07-15T20:38:50Z), 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/QZQ7M2100500.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c3f6057d38bd3f787e1b7e7006c67f8c1a1ff3a78f9cd05c91d9a6a08d4d54e. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T20:38:02Z), 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/QZQ7M2100497.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1b15a145771cf0d711df2e3fabd15d8793e40d7238f194979cf5df8ac143af0. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/QZQ7M2100502.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d3d128c13381868f9510c3970ee8a15ddfb356de3657b9cf146ced05dc20c8c. 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/QZQ7M2100577.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7f9a6feeeb69b7a0bc4d646cbc732c05905bba2013d3e49ceaa01be1e7e5241. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/QZQ7M2100578.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9cf1c02dcb25a2059ef61dca4c4039fdbef44c5deaed9d5cf61f878dc50d192. Chain 2 (Bitcoin): anchored in block 958721 (2026-07-19T11:02:33Z), 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/QZQ7M2100579.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x385eed1df112a08d4517dcf62b2ea3c01f2f34f1dfecce6dc1c69424f5f5a28d. 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/QZQ7M2100580.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5274396e3ab047e6e830aedebd34aab5a5299157e4eb048c5d54419527850291. 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/QZQ7M2100581.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x553d2fa4eaa70a9124d5c8b650bed6b5349a26073b68224970bb6a29329895d7. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/QZQ7M2100583.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7985f601a10b7f58a4e888ee0fe4f936293ef72c45c5a9bcfbecc68c3fa1c281. Chain 2 (Bitcoin): anchored in block 957754 (2026-07-12T21:26:22Z), 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/QZQ7M2100562.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39b57d0dd914b43947113fa9d9c62458141a0f966b04ce15365a42751b034b7c. Chain 2 (Bitcoin): anchored in block 957754 (2026-07-12T21:26:22Z), 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/QZQ7M2100563.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6196880cd3991018a7e4bc4cd5f40968abf015186e2e4f5f7f23a5e8176c823e. Chain 2 (Bitcoin): anchored in block 957751 (2026-07-12T20:41:42Z), 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/QZQ7M2100564.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20714644dea4b9309341049dc5ff4b243d2b3a8082846adea0b92d5cf0aeb900. Chain 2 (Bitcoin): anchored in block 957752 (2026-07-12T20:53:32Z), 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/QZQ7M2100565.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18755a6597295757808be3200e1863206d375944954f08af611ec90f2d076cf9. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/QZQ7M2100567.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60a388100e0bd07a71ecdf79db6b99b5de8f5e9ea0eff886afa94f1ccf014c99. Chain 2 (Bitcoin): anchored in block 958271 (2026-07-16T10:50:41Z), 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/QZQ7M2100568.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2879a5d9436eaa84e633446804357bd73cf4b1b3b14a48d45665b8daeba2031a. Chain 2 (Bitcoin): anchored in block 957851 (2026-07-13T11:26:33Z), 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/QZQ7M2100569.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea3defe6d79fc6f4ec92acd86eb6191338fe945ac63a9c585144458e68f64614. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/QZQ7M2100570.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f531e669b9247e74b671e0b11b3ba14ab195a6f1e5ad68ec71720d86261715d. Chain 2 (Bitcoin): anchored in block 958263 (2026-07-16T11:06:37Z), 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/QZQ7M2100571.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c4fc4d7209fd98e231e535eaafdf98227540b1160ddd6a63fd98776c8cdec36. 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/QZQ7M2100573.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xebac766a9576e6466c6bd17a9d3b6347910eb8d369aed68eae8ad578f087b764. Chain 2 (Bitcoin): anchored in block 958271 (2026-07-16T09:16:54Z), 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/QZQ7M2100574.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07b0676106c83ce87145520b5c470d60adf97496c62b3eaf278cf409ffaad726. 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/USLD91759265.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc59eae9675b3d9bf0f6472c51e43bf0c9691e39802da42e9f63716d53e8adfb9. 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/QZTAW2338963.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac006ffb16fc861df17cfa1d8b86566ba9690875254d7334f3aeaf2c0d4cf357. 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/QZTAW2338964.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5c7677b2f6ad556448c42e7db19bfffeeca698a1b4699714cfc60d762067ae3. 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/QZTAW2338965.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc748c441b1d801f2599a3f22e2170cadac55e76342ff3d660664d024550495c6. 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/QZTAW2338966.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa72b232789e136b697085dfa6a3d5ad8f67f71f1b9ccdfad96fb6bdf823d7e39. 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/QZTAW2338967.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8c7b0fba2c7ae97da454dac1993399f6cb8a0d66c33e5218b349a8f59ba515e. 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/QZTAW2338968.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4083afaa48b1d3f80ba6fbdd3fa0f867f25411ec5f807ed64a78f1bbdadea907. 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/QZTAW2338969.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12319944184ee4617cdc4eac020b7e513116869b8f11f488ee97555f01172cbf. 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/QZTAW2338970.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ef99049925339e0533f6a4407f61e371d7bf097648c8615b38373e7948b26b8. 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/QZTAW2338971.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b1f109e656c4622b215690d3d849e78c8b45f133e8e382e4144fe9e927fb1b0. 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/QZTAT2372551.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x490bbc0d28510da9a4d0426e6fd9f57af9e2ee3bbefc75939b6b0c590f8cf699. 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/QZTAT2372552.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xecaa711de2a6256b92f62841798f74cb3bcb9f65c2e6cd44563ecf8781af0939. 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/QZES72441097.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa421987fb75b72b46d95f7c1bcc1d5ade1259cb0ec60c62d6c97a3e95383aebb. Chain 2 (Bitcoin): anchored in block 959145 (2026-07-22T15:39:05Z), 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/AUGBT2424481.
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