Gregg Karukas (born 1956) is a smooth jazz pianist from Bowie, Maryland who first gained notice in Washington, D.C., then moved to Los Angeles in 1982. He backed Melissa Manchester before he co-founde
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 0xedad01a84bafd358bb61b57eb6ba1750bad101b91b1ee41d57d0dd32f7d25bcf. 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/0afe924e-8339-4dbf-bcc9-d488f700c0b6.json and https://artists.proofprofile.net/proofs/artist/0afe924e-8339-4dbf-bcc9-d488f700c0b6.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 0xbdb424043963d2c8301eece7af0d4f99943e8cfc2270ab8dcb7e8d82890cf0fe. Chain 2 (Bitcoin): anchored in block 957805 (2026-07-13T04:34:37Z), 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/USIE19800015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab806ccd9514592c330e78c7e9a69e47b979f54dbde0358faf616aa6592faff8. 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/USIE19800016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8207d5cca9dff6f48d8229cf0320e80a56e42c9e7d920a53c2d03a89763dda8. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/USIE19800017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b8733f6552109cf90a6017635fb77eb3ba175ae525286eca50a8c2f9f2226b5. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/USIE19800023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69a1999f500b3256d080b51bc8972451b734639583874d075ade5b61c4db3754. 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/US75M0506004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba9a06a1f00ce456f1b1d60c1159353f67e18896b474463d1f8725fa9c192b54. 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/US75M0509002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36ceebdb27ab026518bd37c8c812fa460ecf30f908f59e64b75f66ece468d381. Chain 2 (Bitcoin): anchored in block 958447 (2026-07-17T19:47:19Z), 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/US75M0509003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x487294cc3669193fa0bd9d28c90621c195f0408b7a77807b8d0563eb41b018b2. Chain 2 (Bitcoin): anchored in block 956426 (2026-07-03T01:37:49Z), 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/US75M0509004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb6e1506dfe524094bfcad4c214a5b3a6e0417b94eead60ea09f60471e7fdf3d. 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/USWR30000092.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x407ef97439d23f0e13071f3f3e71c190cbcc482cb1f0dcc680fa8e4b68432efb. 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/USWR30000094.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a1d5d027eeebe2ad18f313e9793081111a9fa842aa5fa5c9a09a4d5c5502ed0. 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/USWR30000095.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e72a6d792f0c45a6aa4c733a2dcea8d226af4652f26b9d8539a1c647258e1e6. 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/USWR30000096.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8605340590176b6e42fef4894598eb107fbf892a252aa04dc7e67dc08b781c1a. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/USWR30000097.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2fb34d9099cfe7a4deed3b463011d28409be68e9a2f3638194a547a352c969c4. Chain 2 (Bitcoin): anchored in block 958271 (2026-07-16T11:06:17Z), 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/USWR30000099.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7f88aaf59c7f1fa5a771a31c026360977ac368c6d94f0bc2ed8466c2d8b7f3b. Chain 2 (Bitcoin): anchored in block 956425 (2026-07-03T01:28:11Z), 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/USWR30200041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x165baeff8fb69593b0bcc0fab3aba49ff7b4e8e90b2a5be5ddc6a744c78d0d98. 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/USWR30200042.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcdf27b1c3f86f3e6072660439ca076d8a9e85046553ac2881021eae6d610d823. Chain 2 (Bitcoin): anchored in block 958349 (2026-07-17T04:39:32Z), 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/USWR30200044.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7447011ff740d245c95508f313a26acc6c3462470feed771f5eeeac9d7e0bc72. 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/US75M0505004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd65afc3f3a2fcccc8d166724acddbe549f8bd967fae47969e26e58c4a851de5. 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/US75M0528002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x519a2d8b6f2c5fab3c78b8142f8f2524e40d000d4b2725fd3e482a619470892d. 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/US75M0528004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45602edcf8bce31905d8912fa3d2826b56b740d2f38714e4a7392740890ba50d. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/US75M0528009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94fe88a70f3e126cd34eeb6d411bbfc2aa368dcd15ff3654f283d4a8e5e6ad10. Chain 2 (Bitcoin): anchored in block 958547 (2026-07-18T12:44:05Z), 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/US75M0528011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6772668bbb50d82df8eb8c97caa84d1105072cf023a35843074845677a14206f. 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/USME30900217.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8212dc5b6c4043ab9e4a3eea31b68c8c4aa5eea9424a845d0201a06bce7fd2d1. 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/USME30900219.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf505c883ebb107045cf337f4a64d8c70ffdf735b1620a758ecdcbf4ca842609. 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/USME30900222.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3cbf7fc5b7115ea801792403f99f6e634eb259085ef83c34d103e3ecbd021606. 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/USME30900223.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a03d053975a5ba37fdab53cfa1a86a60685d5a3108e7e2ad0e10b02cdd5fcf1. Chain 2 (Bitcoin): anchored in block 958682 (2026-07-19T06:17:12Z), 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/USME30900224.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbfefd2054489670e035e81a1415e96780568a71062878eaa915c9b5ab83d788a. 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/USME30900225.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8cf5575b6374e5c54b014ce76d7bbe2821395ef68be494e1b4776ce626d6c10. 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/QM7UD1400001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d03f5f41bfa32607919ad40d7d7c01fee2020ac377ad7db4f6eaab325674531. 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/QM7UD1400002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x058bb83a1bad7b373b5bcdb5676ac10c2817e9f43d543bab87c6e5eb03360e94. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QM7UD1400003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25fe662810a9f2478c023db31d412b726dfdef954318a8993b9880c6d9b0558a. 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/QM7UD1400004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6e20f2cab370c410a86ce3356fcbeb0f60ae1eeeae0fe0365d08d61a7224363. 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/QM7UD1400005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xecec401e8cd8a355d78e3d08078a32ca1328cf2b7fddec4f395e235f6b6fa5f7. 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/QM7UD1400006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14c07febb6128b6e187512e77111a61799284114a48bbc1b26b8349c05226f90. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/QM7UD1400007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20ae3a0ad58580df96457947a12665ac7e65bf33a0e3eaac2d1a28bbb66fabd8. 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/QM7UD1400008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfca28cb8e656ba967491374771a77d57b0432d2995a788303fd912d8fcb5f828. 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/QM7UD1400009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49b01577d8c140d59b2672db592ba5f6437691941f41a2c3b6c6520e86e01058. 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/QM7UD1400010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea3c4faf17de05d2c4457fe835a5771d292af78ca19fbe11ba5a1309c075b6eb. 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/QM7UD1400011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f850f76e11c84a1cf31621d418a34be78ca4dc6c481f8c530d2f9c4b3503a71. 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/QM7UD1400012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a5d84b0deebb9f9718254dc1d3489eaf1f6daad6e457f43fd3d1f05308933c0. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-07T16:07:00Z), 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/QM7UD1400013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd58c4fccfffe2e5c350ee7ba59d21f024dce656e364ba16a96f13c769219bc13. Chain 2 (Bitcoin): anchored in block 957043 (2026-07-07T13:52:39Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QM7UD1400014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34ca80e390f45af261d98e437282154a3a6523569c9028b0e9206c14b57723ac. 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/QM7UD2000001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27853f1f3a01c228880e27985a8b175f43d2f1ec81d4f2b1d0f27754c9fbb387. 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/USWR30200023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28822e3c259f9a647393721b6017a69a4e7a5756d78710cf9d8c473201027d39. 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/US75M0523003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe05edfbe670ac7162a1da6e0054881363514413c61c935382607eee2b0421dd8. 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/USVKM2000061.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b78a02e25f996b2af2574397efca4bb621d2469c2999e9658f988655ee6db75. Chain 2 (Bitcoin): anchored in block 960229 (2026-07-30T08:30:10Z), 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/US75M0523001.
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