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 0x3d4ac904707c816b837cd268923dc375eb2c30fd3dd20bbe0bae5acccdbe6deb. 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/92bf246d-e208-471b-8160-31bf36057278.json and https://artists.proofprofile.net/proofs/artist/92bf246d-e208-471b-8160-31bf36057278.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 0x7b708717324cdaffa5c37120e4ff113e7596c9923d2eb78b90df02d02cf12509. 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/ZAS6S1400004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef8d6ace6a355d925655248626bf8bd5db5fcc18a216574b09305920ce1f0b2d. 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/ZAS6S1400001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab70c0a61b3fbc4a9d7946f08c5384a83ea542d02dd54cf5fea8e25a24d0ad98. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/ZAS6S1400006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9efd76aec6118446fae48473e857f98f54f51e73c4586bd09bfa47217a8ce467. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/ZAS6S1500002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c4f6c6e84b180b3de59f2a93cded586d06533c3013f17891c082e1c31af56fc. 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/ZAS6S1500003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b7622c00cd92c29114c593fe3628b2a89199a9894d77c8906d395d547859db5. 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/ZAS6S1500004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e7d2703a66e080a908949e0b86628462a292ec6d458dbcd46c31be8b51958f9. 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/ZAS6S1500005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec10e10a4098fb06c98793bfcec4a079db56ebc2155662a38d5cfcfb451c5213. 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/ZAS6S1500006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x374d39a715cc8f7dd6229f7ee041fb68505c40e9227d5d881824aab4f92e367c. 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/ZAS6S1500008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66fef7bfc429b385e30230faf80ecd1166be6e72b00fc5d83e5d38769f35fb12. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ZAS6S1500009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b816cf4a57cb2172daba55422485f4a0bba6180d732017ff8bc635a83a179ab. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/ZAS6S1500010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a2c8acc5d966e7c48e4cc3796070b394547868f9ced71a3a0ed53591f230555. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ZAS6S1500011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33fd129269180789627c68d56620aff05c3c851117c6bba6d848153e3c947980. 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/ZAS6S1500012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4861fb75bd92ef0bbd5ca04b8510c12751c5b1051b32ad95026e2d8a36a4eae3. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/ZAS6S1500013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90d3773ae904dbd4a2e9fcbe63f2a2fa0a0df20d2ebb8fe1b149a0a5a013feb7. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/ZAS6S1500014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x637dd7a51637e1f592c5413dae56a94392f5382ac772096a708de807a897213b. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/ZAS6S1500015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27544e0357e44e813fca8a3dbee67a95d8f234fec67efa4eb9ea77b545cfb5fe. 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/ZAS6S1500016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e7d2703a66e080a908949e0b86628462a292ec6d458dbcd46c31be8b51958f9. 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/ZAS6S1500005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca4346e0a28b0ed3ab05c393084eef63dca2aefc774497f46a046fa2e1a546f2. 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/UK4JC1700012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54730ad8a4cf5e0efd09f668654a53f0cbd9f74e94287de0bbdf5499775f5099. 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/UK4JC1700013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6dda0bf3fe6d1c8db2199c1d8cf9e31a229c60c0ac62a2f8db81c9d7ddd5338c. 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/ZAS6S1700002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x078b1dfd48116ae7ac1d5fadc44e7111e68b615de76fe6b6db41183386f1cc5a. 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/ZAS6S1700013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2651ceb77dee7e47c8313bab690bdaa2ca9ef386cf4477ef8a4197d3698a0ea. Chain 2 (Bitcoin): anchored in block 957084 (2026-07-07T20:41:57Z), 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/ZAS6S1700014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84a1c24aa954ebff1923b05c6c9e1513ff64d5e45212e78549104a7d821d1564. 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/ZAS6S1700015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76b25014569562937e7e7f10c883203fd3f5b302f227c97209d697b29fb40a04. 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/ZAS6S1700017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe210e31783ee6921e7ec41be75eebb9ec09cc9309b967a171b7949bb0e7d9841. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/ZAS6S1700018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd05dc442eb9b02b39c6cddca28bb723dcd3fa8ab00a709560313d8b742d548cf. 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/ZAS6S1700019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c5babbe0b2e7b8543c67e03b6eee7298dd1541a07a86921ed753653046040e8. 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/ZAS6S1700020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4860d29ac02e188c47b33f2e25d2bc5576eb61176ce47e43260de7472c298531. 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/ZAS6S1700021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5e25017d671aab66bd1f2acec41ee5ab539515c6fcc0bdd9ad32dbcf6bf8f24. 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/QMFME1920071.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef8d6ace6a355d925655248626bf8bd5db5fcc18a216574b09305920ce1f0b2d. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/ZAS6S1400001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x792a454f79fe613b3a2ae68db1f0f20115a7fa8d8464a8bcee1cfd0f4bfd981d. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TCAEW2034442.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef8d6ace6a355d925655248626bf8bd5db5fcc18a216574b09305920ce1f0b2d. 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/ZAS6S1400001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcdea51b6a78518c6fc731936fd33f44b01e2cec8b1d8858726271498da778ad3. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBLV61800555.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe210e31783ee6921e7ec41be75eebb9ec09cc9309b967a171b7949bb0e7d9841. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/ZAS6S1700018.