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 0x03e99e5e9af064d1fc97dee2426bf35faad4c829521a187fc7443a8b85da0fcd. Chain 2 (Bitcoin): anchored in block 953817 (2026-06-15T18:10:31Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/fe44e039-9aab-4b56-9ded-665b1c70df31.json and https://artists.proofprofile.net/proofs/artist/fe44e039-9aab-4b56-9ded-665b1c70df31.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 0x270cc56e8965735052df4a94aed2d71b4613ad60d0c660c4881d15ab8e4dec8d. 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/QMFME1458386.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1101e8408f5a25a1a4db7eb7a1139cc2c221082f1b0efd59a72ba42c9744db2d. 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/QMFME1458388.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec484fd09d36b441e380b8962c26e9c2b5a1bc523a7e6dbe9f1f638d85e855a9. 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/QMFME1458390.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4ce7a42e391c36bcf18228240ad913c242791e9f0a6be273b5b9832b8e30293. Chain 2 (Bitcoin): anchored in block 960500 (2026-08-01T03:13:03Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/MXD481810740.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8381d16eb1351899b1928d2a35e585b55bdb03b97c44f4f83691f31e3d8b7be1. Chain 2 (Bitcoin): anchored in block 960497 (2026-08-01T02:22:04Z), 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/QMFMG1441218.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b54d09a833a8cc066f53b96f80e4a3de36a16fe5f35588933f1c3c22fd45b58. Chain 2 (Bitcoin): anchored in block 960503 (2026-08-01T03:41:24Z), 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/QMFMG1441221.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d240d0dadf74c37e182ce0c8784ddb3da64ba72624d0744f6b588d4e5cbd22d. 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/QMFMG1441222.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3dd870e604156dbdec16832e33633fb3e239ca3d7d04d2870b9e8071a8fb1f1f. 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/USPWN1300189.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e94c709100e49045aa2f552222c75526ff1c59172288fffc5e4473a1d44c322. Chain 2 (Bitcoin): anchored in block 960273 (2026-07-30T15:42:38Z), 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/USPWN1300191.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e08caed1d0f11034b203699251b51f8bcfe94f757497b9adc86a97aef0181a3. Chain 2 (Bitcoin): anchored in block 959147 (2026-07-22T15:43:44Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USPWN1300192.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x298b0c2a4046a55d0fd51b7b288682d9401b153ac57ec1c300f2c3a147669a83. Chain 2 (Bitcoin): anchored in block 960497 (2026-08-01T02:22:04Z), 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/USPWN1300193.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f3bf64c5479cc42dc496fc98edaee6e576798fd3a22f53dd1b0833a37e945cc. Chain 2 (Bitcoin): anchored in block 960513 (2026-08-01T04:52:22Z), 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/FR2X41506604.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb33ad1a327383896842d044c91c184da616689c80a3c0065b403c9359c7b0ced. Chain 2 (Bitcoin): anchored in block 960456 (2026-07-31T19:53:57Z), 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/FR2X41506606.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38dce2bfb509bc347bb2f5b711ffe17e46fda5d3593457beed006919e5ef913b. Chain 2 (Bitcoin): anchored in block 957249 (2026-07-09T02:31:37Z), 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/USJTQ0903772.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd674f9b4b651639f9dd33e935093aa802fa5f5e7860247ef47356c8b024962d9. 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/FR2X41506617.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01c47589e9588399620b76e67a0105c901be713501e650e82299221194626551. Chain 2 (Bitcoin): anchored in block 960506 (2026-08-01T03:50:58Z), 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/FR2X41506626.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x290326925bfdb85c8d7ac31d89ee642843146da2e9c8ac91280a82954d517710. 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/USDHM1524427.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeff644c207afcac6a66559608925251a06d72b3cf1a3a7a7a802b11e62019227. 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/USDHM1524428.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeded506812c1a4bc31fee2a21472513a44118aa61fbced35b4703debfa5639e4. Chain 2 (Bitcoin): anchored in block 960348 (2026-07-31T05:17:02Z), 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/USDHM1524429.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ba4310f6bda4981c3d1be376d551e1b9230063618575a51bbbc28ab82a6e84f. Chain 2 (Bitcoin): anchored in block 960441 (2026-07-31T17:29:52Z), 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/USDHM1524432.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2593e9fa75138429edd2492bae0d25abc5a9862d4a9c48d1e5712d10b071878. Chain 2 (Bitcoin): anchored in block 960317 (2026-07-30T21:35:24Z), 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/USDHM1524434.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae8ca68874f7d173746ea16e7166f816617c4c9f2fed2e3dce30a8a96eab537d. 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/USDHM1524435.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d3833405294b863c487ecc137edfe8697a48ad89507049d044e40760c89de04. 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/USDHM1524436.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9209982a9d1722a9a5b2fa5a606a43ecb3b455839bdcae5a97b587d7b7997d79. Chain 2 (Bitcoin): anchored in block 960250 (2026-07-30T11:13:28Z), 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/USDHM1524437.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe49fe06adbf7995d8feadd692ce4022498202441abbbfcdc0027ee2a7c46a061. Chain 2 (Bitcoin): anchored in block 960379 (2026-07-31T09:25:34Z), 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/USDHM1524438.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfbe52eec4567ad6922115c2b0c1a11cf37876b215dab0688ef1e5e2fec72fce0. 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/USDHM1524439.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa51ffae6761f68bd2af09551f7c7189c0a161e2e4d5bf5eb6dea8b846e870dc. 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/MXD781903554.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e9e3d810464a6a0be67115a8c717831f18724ab3920de20f7a07ecff621a226. Chain 2 (Bitcoin): anchored in block 960441 (2026-07-31T17:29:52Z), 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/MXD781903555.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea86d9b321d1f645ea69246677576d25d1d3429407397ed027afe0441e976315. 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/MXD781903557.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74c6e77b333189557e2045019674d376ad5df86c21163f110e089cbf144b2d3c. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/MXD781903558.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95d4939adb0e48d11c933395dd135ba59e995cb8db4557aed87d37d5e5ec399f. 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/MXD781903559.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf433f7bdbfd43e735de0fe9db0c017f1dc10910f1c35a91845a1d926f8a2abcc. Chain 2 (Bitcoin): anchored in block 960506 (2026-08-01T03:50:58Z), 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/MXD781903561.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc02f1639d0fc4730a37b2db51a971648e374e2efbc6075f5a586f057cc45fed4. 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/MXD781903562.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd59e2bf0f7b69e51e58ddd876d181ba652c8e0c9f6cfe10f62351398c36c1ef7. Chain 2 (Bitcoin): anchored in block 960500 (2026-08-01T03:13:03Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QMFME1460770.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbba3e7fdb51af737a9f66b4ed89fada2afccd936df8c4bfe244cc10afd2a00b8. 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/QMFME1460771.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09a9523ad56fc41a00b4dc2360c97ab2a1593e9e4eef644c4398ab656fd2f36a. Chain 2 (Bitcoin): anchored in block 960298 (2026-07-30T19:26:00Z), 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/QMFME1460772.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23e56371b323c4d4c49437512b7e058fe569496944b4f88fce70a01be9a35103. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QMFME1460773.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x927b705bb983fb82a204627d8b5724b3fa903533a89443be6b37a261c54c9c72. Chain 2 (Bitcoin): anchored in block 958041 (2026-07-14T18:13:17Z), 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/QMFME1460779.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23b95549f1f95490642dfe65ffc854a18f4b96172d9c89a7656498fecda60369. Chain 2 (Bitcoin): anchored in block 960441 (2026-07-31T17:29:52Z), 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/QM4TX1941118.
Los Huapangueros de Hualahuises,Nuevo Leon
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcde1904dd10a0703bcf6dc0121fda94b1dae6be29946910ebe819e14d19a6438. Chain 2 (Bitcoin): anchored in block 960513 (2026-08-01T04:52:22Z), 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/QM6P41862061.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb168b6565a3515b800e5b7b2b2d27319dcd77281ac7e646bd6a20a1e85c339cf. Chain 2 (Bitcoin): anchored in block 960376 (2026-07-31T09:09:19Z), 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/QMBZ91319521.