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 0x2dd3c71a667ea91f9c3af12936111b1c8e59f7a791281574a4467f23652abd7e. 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/e65f4b6f-fcda-4165-9100-05c68a5aeab4.json and https://artists.proofprofile.net/proofs/artist/e65f4b6f-fcda-4165-9100-05c68a5aeab4.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 0x2ebccc25dfbf86c74c2ec8337cfb7248d3270406258f5d2fbc375e404a29eb0d. 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/USJ3V0964234.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1af525043a7eb531724a66adb16fa96ac11635b2e9f922fc282a31afd0a8f917. Chain 2 (Bitcoin): anchored in block 958793 (2026-07-20T01:39:22Z), 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/USJ3V0964235.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9715c75308b542d7e9d9446e11272a860a7eb681410b79e170e2989fe978e23. Chain 2 (Bitcoin): anchored in block 958514 (2026-07-18T06:54:37Z), 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/USJ3V0964237.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a12fe0644916c0c45206a53d88433b034f3ce083d19cd2fb21c5c0eb7f927ff. 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/USJ3V0964238.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbfcce6a1973829532f62a7cd455765b42c483b564978d12a1a1f3666b88041e9. 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/USJ3V0964239.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4e77940759a28ea745bf1a013b6c2fb3b8bd607801e0ed92256bb8bd3386835. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/USJ3V0964240.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb236a7c179c42bb6f2d2a2fb99a26272fc6b7b0b97f7580ef396093dec63b5e6. Chain 2 (Bitcoin): anchored in block 958212 (2026-07-16T02:13:10Z), 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/USMU40400219.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a286719cf272525dfb47dda9b3d0f6f180164de2e521aef6be01df881453cfb. 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/USMU40400220.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8dbeee32378e648bd08f56ba3d1ca029bc0e53370a4fbbc77b7a9ba1a272bdf7. Chain 2 (Bitcoin): anchored in block 958746 (2026-07-19T15:36:35Z), 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/USMU40400222.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47cecd888c56006247e144abc5fae0cce139bb8f80ed6002fa134ea0cd8ec63d. Chain 2 (Bitcoin): anchored in block 959002 (2026-07-21T13:41:09Z), 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/USMU40400225.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2708de4af0ed084992371dc924b17efd2f6a1496ee989a2cf8692fee4bc88f71. Chain 2 (Bitcoin): anchored in block 958130 (2026-07-15T11:19:06Z), 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/USMU40400233.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72cdc407fc11c48f4069820adc776869490506a755fe84cdd269b6778d9389cd. 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/USMU40400234.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66035dee34d41ea1b9aaa566540df787d3ef626cba33c35e3808aa5624cc377a. Chain 2 (Bitcoin): anchored in block 958211 (2026-07-16T02:21:09Z), 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/USMU40400238.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b2e7623b6f97faaddf7644b949d01e1ad000151e62ab8ca1e188be0ecb1d0bf. 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/USMU40400240.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc46c3f7b64ab2c70571022195aeaed85620dc4671e73c31f6637113a248e4889. Chain 2 (Bitcoin): anchored in block 956711 (2026-07-04T22:48:52Z), 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/USJ3V1057994.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42f777ef4a62edd9dfae22abd124e716a3d0b3bf53077bd5b59cdbff8a6c3fac. 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/USJ3V1057995.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d4add95305744e762f390aa56c719a65b722dc335af204f95f14f9bc930ba89. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T12:38:03Z), 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/USJ3V1058004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e775b8677a6d5989cf58063984faa99e31b59f8e4141348d43638442298670e. Chain 2 (Bitcoin): anchored in block 958711 (2026-07-19T09:26:32Z), 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/QMHUY1452003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7a776d763cf12caf3488f76522febf578e4742ca9a8bf6e723b3e20163d634a. 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/QMHUY1452005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ce93bc7a962e9a02393b9dcf2cf952f979f0d77fadccc0b297787f13af305ff. Chain 2 (Bitcoin): anchored in block 958992 (2026-07-21T12:48:31Z), 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/QMHUY1452007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbbade778867e3cb19ae40f5691de733cea2c9b5b6e6dfc7fd161825341799442. Chain 2 (Bitcoin): anchored in block 958901 (2026-07-20T15:07:00Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QMHUY1452010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37a6b11fdab4b2e466def7e3c6b698dc3021ff87751982ada05117489a8282cb. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/QMHUY1452016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa13947ed34b7c6dc20b06dce25e602309fe4179cf52e745dddc65db5bb78354c. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/QMHUY1452019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36fab7e205f49153ac74923326d4daff2872ad6aee7accdd4fbd1ee7b381b8e3. Chain 2 (Bitcoin): anchored in block 958942 (2026-07-21T02:08:29Z), 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/QMHUY1452020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0eed5f820604f726e73b52dd67c6faf676881892a520752df56b4f40bb059191. 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/QMHUY1452022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x048e99e366c7787d847a7fb1f4d21513580ad9b0e10f7648207ca09f324f163f. 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/QMHUY1452024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x771f568408f9087a664379873cdf2d5ba93a2a788348d3b1245d9ba6d353252c. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/USZZR1205937.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ee332c67351c844f8a948f48e3d4a3993eeb12c8a037c28bbd048cad9981fe9. Chain 2 (Bitcoin): anchored in block 958935 (2026-07-20T22:08:19Z), 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/USZZR1205938.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc668953ae82a9c24e39f6fc6a8b9a636b2dddbcda5c1c69354dd3450d1fe87ca. 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/USZZR1205941.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x401c1fc928e2bd63e9413e9289019c3568cf988d416e5190a82c52bd6e45e834. 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/USMU40400262.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04f8ff27ed690fbb007eb63673cb6f3202988da7d9b29a80a7e6bb843d68dfb4. 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/USMU40400264.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18cc937f1ab1604c2d347c6f2a4f5bbb462426566b7777510a9dab820fb22643. Chain 2 (Bitcoin): anchored in block 959002 (2026-07-21T13:51:24Z), 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/USMU40400265.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfdefb4e74439169b670df57ab721b6fe702fef4ef3058878516ee675a3ad4929. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/USMU40400266.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ee5c2e51deb268c8009d0a7763cd4032c61ae07d4fe9cc1b0e587d0b79186da. Chain 2 (Bitcoin): anchored in block 958711 (2026-07-19T09:26:32Z), 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/USMU40400267.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b202b056daf5bb0ccd8adfbd6bcbedd559577ada55c1126a005f36affa16e7b. Chain 2 (Bitcoin): anchored in block 958350 (2026-07-17T04:04:52Z), 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/USMU40400268.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96d8355eea143473515f715760e391a6146bd882e9c706b247d73abeb5900804. Chain 2 (Bitcoin): anchored in block 958700 (2026-07-19T08:09:50Z), 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/USMU40400269.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x477ebd28e562160467e61db0c96dd7a5a67c4ce305be0b7008c3423411fc6e6a. Chain 2 (Bitcoin): anchored in block 959003 (2026-07-21T14:46:36Z), 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/USMU40400271.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x188996eadd24ba4a3f0ef840c27f064428e0249b4485a66fdef84c45323a7bb6. Chain 2 (Bitcoin): anchored in block 959043 (2026-07-21T20:23:12Z), 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/USMU40400272.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9529588d005fcd2dab78d30db5bb43e059d1e75c69a03c9cab8de393d0be3429. Chain 2 (Bitcoin): anchored in block 958613 (2026-07-18T21:35:09Z), 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/USMU40400273.
Pistas Continua Lo Mejor De Los Hijos Del Rey
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x738ef8498ee5c944dce8b59e6f63b8c1ee9fc5a23aa263e5741302aa53239515. 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/USMU40400406.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde6eb54bafaea2095405f1084395dfb35c3de76915dadddc1244e7db71415a16. 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/USMU40400407.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6472c23ceb079bee400c17afa9a666346484c0c28da3c7bc64e2508ac757adff. Chain 2 (Bitcoin): anchored in block 958430 (2026-07-17T15:33:28Z), 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/USMU40400408.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb4256f4087a5a20f94ab227e95a98a53df98d73876390ecb4e12d3a14aa4285. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-16T21:50:26Z), 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/USMU40400409.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xffc31bfd80dbd72351447d7df5eeb8a047bf63174c4308957f464e76ab909452. 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/USMU40400413.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0115114a8a406c36d09c7be79289d0a716f4eae2d2b99920071e91e97fb0822f. Chain 2 (Bitcoin): anchored in block 958805 (2026-07-20T05:08:17Z), 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/USMU40400417.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe645d22238537c67fd5b30940a65c56105630030ad07481de0f8f0e0399da92. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T11:48:36Z), 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/COA2N1100061.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9e87b6357b5ecb045335ef4ab2e2f2e3efb101629608a280e7ca9a836edc220. 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/COA2N1100067.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8417342b3741655408cc572b98e2e8f7384dd7a936e895c25b974eb11e74bea. 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/USMU40400292.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04f88a4e31fb3f0a26f4626b819a12dd59c6c19d6a85b9c1ee26ba8012f07e52. 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/USMU40400293.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x091cdd8157b50224c27e751b08cc51a9e34e050278c8c1a1daa6a2dcd3a1ce16. Chain 2 (Bitcoin): anchored in block 960381 (2026-07-31T09:50:11Z), 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/USHM21364847.
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 0x05922f9b5b441d99db57e78fdebeb7117a2f5684bcdb69946b85ed410d79c96e. Chain 2 (Bitcoin): anchored in block 960225 (2026-07-30T08:04:30Z), 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/USMRE0810109.