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 0x3af360225fc4719bf54bb1fce2dcd8e6cd5116b2bce5161580320bdaee026ca4. 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/ae5d270d-831a-494e-9132-2e6c84ccfe7f.json and https://artists.proofprofile.net/proofs/artist/ae5d270d-831a-494e-9132-2e6c84ccfe7f.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 0xb69649d6dcaee8f802fc309adcd1f8f22dfafb7047a98c0df393bd00e30fa5fb. 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/US7VG1607552.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73669c517070461097871efa126c330365cb6c20a04684a445cbb59f83f3f34a. 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/US7VG1718646.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4db49443004158cbeb784896593fd83105ea5d90794b661cbecc053aa3df5da6. 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/QZ5AB1795792.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e6ce792f30e2f3686ff446ba9494e81c7e957380f37d2b10979b85a3eb49c01. 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/QZ5AB1795793.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34c4643a6105ef95309ffa706ef015fa39a6d93e6a83290a6a565de735e183d4. Chain 2 (Bitcoin): anchored in block 958384 (2026-07-17T08:27:02Z), 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/QZ5AB1795794.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb0a0c78c5d5af49bbdf025dd2ac113310fac939c10d583e43ebd0fb52352674. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T04:45:14Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZ5AB1795796.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa98f7222d0faaf0be9fb743b3edeedc2dea36af218e28f0cdf0087fb65a5703. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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/US7VG1806508.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xafab6f10fc5c048f460508084939625ce0d87a1eb2cc84153f75bd4f0bda4e18. Chain 2 (Bitcoin): anchored in block 958734 (2026-07-19T12:54:58Z), 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/US7VG1922525.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c18cf5f141bda1b8cc5ea31a2f5f38adfd9463a1534c4685030f69d2cae3dd3. Chain 2 (Bitcoin): anchored in block 958384 (2026-07-17T08:27:02Z), 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/US7VG1922527.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2dc1138c2a11c17ffaa4f0a8b0b20d683a2b6eb6f02a77c852fed7f3e35c1e97. Chain 2 (Bitcoin): anchored in block 958526 (2026-07-18T09:09:53Z), 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/US7VG1922531.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb332b62245fa2a86107b7fb7920c260b2e10aa6742b706b824bb722e95a90731. 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/QZHZ41909122.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5573f3cb13245a7bea5e3bf0822a3e5266016ab49914907f2dae7d248f3bd309. Chain 2 (Bitcoin): anchored in block 958987 (2026-07-21T11:04:34Z), 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/QZHZ32045106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36a6be69ae90b9fdf3f191f519faafc55bd1693fedb04306eb59618fda42c7d8. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/QZHZ32045109.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97a46cf17164cfa3835ee73320eaa170bb37c0edf2d62902206dea023fb2b9f9. 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/QZHZ32045110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xefc17b191ad43898cf45d39cd6a5fa62810d8790c5298aedf06d7cba310ad9d8. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/QZMZ92000306.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44b7fa846ab17dcf336e2e515ffe01ea66a3902b584895fcff6f747017e19a42. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T03:59:01Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZNJX2148327.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa69e66f0a0c385351c338727f6ec37b34c619ccfb8c2db60255f364205b0fd24. Chain 2 (Bitcoin): anchored in block 958203 (2026-07-15T23:38:51Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZNJX2148329.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9fcac1c7e30c26653321ced67965249515a895494b541171f8a7645080e7c975. Chain 2 (Bitcoin): anchored in block 958051 (2026-07-14T19:14:42Z), 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/QZNJX2148331.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4ce93d90e36f6feb45b695f774f77bdf87e82109373783c466b51bff1d0b52e. Chain 2 (Bitcoin): anchored in block 958436 (2026-07-17T16:42:22Z), 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/QZNJX2148332.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe11fc0a2b4a80069721368ee62176ee71e2026bc6f0f54460705227ca3fcb5ab. 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/QZNJX2148335.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71ab6044b7319e236a7e3968aa2461f3311391b552c8606537a87a3352f91bed. Chain 2 (Bitcoin): anchored in block 958689 (2026-07-19T07:11:11Z), 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/QZNJX2148334.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x664ced7a9b457d924e90bddc8f820b23c39c173078012e99a3db7dfec09eba5c. Chain 2 (Bitcoin): anchored in block 958331 (2026-07-17T00:30:17Z), 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/QZ5AB2210036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d533e04f4bae6dc4df87176cf97be277b2dec6083cbcfd36963f28cc07969a4. 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/US7VG2340321.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea98e5ec9deeed529687cad4a1d4bea8c803a6207db6e879d52ba073f5672738. Chain 2 (Bitcoin): anchored in block 958331 (2026-07-17T00:40:22Z), 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/QZNJV2362156.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf999518884f38db3ba9b84cddc5a06cde7f0778e9bb0dee2feb950f9f7d6b7a8. 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/QZNJX2381259.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe11c86ffee92563e5a14b824ece3794eaf6020aa28fdd964ca96fcbf7d129f33. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/QZNJX2398257.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07fb925dace175648ba0917450235f870a6f26e4687d4bd99f84fc8ea92b375c. Chain 2 (Bitcoin): anchored in block 957899 (2026-07-13T19:36:39Z), 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/QZNJY2356781.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x751d1e2274125314298bba2be3e78cd25dfa07edf075415f389e5148b014dea5. Chain 2 (Bitcoin): anchored in block 958153 (2026-07-15T12:03:04Z), 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/QZTPX2300420.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0b0bb4b1a0600e06667d56b1ff2071a6c485cfaf10e175bbc3c17b0bed14846. Chain 2 (Bitcoin): anchored in block 958508 (2026-07-18T06:27:01Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZTPX2300424.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b95e1b87eb5a527778ce6c9007a23eb8007d6b5fe4a3f973ebadc0a28e615ed. 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/US7VG2426233.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ad56608de1828eff496a87ab10853d4457be0f2c512267dcd5ec21829898024. Chain 2 (Bitcoin): anchored in block 958324 (2026-07-16T23:48:40Z), 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/QZNJY2452367.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ce8975d0bc4a19d60e3ddaf7f47732942155bb31daf4bfc9fc77c03fcb14344. 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/SE5P52431733.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01e12bd058255f78f1a77e1034f61359bf42111ba9cb914d2bbb4f664cce6426. Chain 2 (Bitcoin): anchored in block 959047 (2026-07-21T21:03:14Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/SE5P52431736.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9ccb6c225cc77eeedeebeda3b5860af53958c66d7facfb0948bc0d535ecbc66. Chain 2 (Bitcoin): anchored in block 958658 (2026-07-19T04:09:09Z), 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/GXEBA2400003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb277acf815a8002e1c0562689215635fef266eb5a6bee61b6d4857779fef2ad3. Chain 2 (Bitcoin): anchored in block 958612 (2026-07-18T21:29:37Z), 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/GXEBA2400004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x013210ee473a8377473219461ccadec73d33c2490d63744d4e8128b7c4a2f780. 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/GXEBA2400006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3f7f91338f6dc6f983c52bec79049d9e31c185b5773aa059572a652157df701. 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/GXEBA2400007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5527fdc11cd8799c0a41d9cdad718fe07cf5e699b8d881410c35d0d126e0fae9. Chain 2 (Bitcoin): anchored in block 959052 (2026-07-21T21:32:05Z), 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/GXEBA2400010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8fcf5b91bfd8122c3c751fa57750ac78fb47752b9930bb343556b2736b5524ca. 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/QZW9K2497701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8218dfdd6542ed9c29d249f036d12634e5f05287881dce425df0f2a64a06f25. Chain 2 (Bitcoin): anchored in block 958594 (2026-07-18T18:05:01Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZNJZ2316017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6823a4443fdc32415efb892ce958a2a7f274818de4246f11fd4692fb1283e024. 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/QZGLS2508149.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe73707841c9fe1c479e32dd8cff6861ac211d6899ba8f57790c3e7b770f045a3. Chain 2 (Bitcoin): anchored in block 958377 (2026-07-17T06:48:00Z), 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/QZGLS2508142.