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 0x4bc76a8a05d8d5bd7bbdc49e445d9ae0432304fe48d893ae819e93d057c2ff56. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/94a26313-988a-444f-8fe9-3b87366405ee.json and https://artists.proofprofile.net/proofs/artist/94a26313-988a-444f-8fe9-3b87366405ee.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 0xef0ff9153732392716d15e2a89bbfa90a32cbf8060f72af3dcbac493e380ec6d. 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/ITR361400161.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9371a8806cb26612b3ffa9436db36007726ae025626eae29a044d6ea5ec43f40. 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/ITR361400162.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3756a9ee7454a7e3c4a8345be12bdeb823731e45bfb18ddaa7f7ce9d333b6ca. Chain 2 (Bitcoin): anchored in block 958341 (2026-07-17T03:07:27Z), 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/ITR361400166.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84b38c3d3f3542e4d6ca9afe4130c0272842a969af042a5dbcd723bb2337a5ae. 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/ITV501802001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c782f7779faed8e37576549b8a1606cef79bd36791c1b8386b4cbea4e208ce9. 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/ITV501802002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ee58b6ad2094b0b7332c45ba4f0d7ef5096b770f784576e896d668b1bdf5723. Chain 2 (Bitcoin): anchored in block 958885 (2026-07-20T15:47:04Z), 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/ITV501802005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2abf1951f842a593f2c8f08c15a56558afd77266b6190b9524b2706420e8d240. Chain 2 (Bitcoin): anchored in block 958897 (2026-07-20T16:08:16Z), 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/ITV502101001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02e0f51a7b98da5ec12471ef29f68f1328ac9a435273d8685c67be00cca55579. 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/ITV502101002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb55b501e2e13774aeaa1d650f9ebfc3d848e69d81fee0f1692212acd05edf46c. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/ITV502101003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x954403dc1221b6576491bc426575eb1a1113a254e7a2079f8ee90e8a47572276. Chain 2 (Bitcoin): anchored in block 957658 (2026-07-12T05:03:28Z), 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/ITV502101004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe05f79891171f3fdcc5d5c5618ffd60118796864ff7f790a0f4d41516fe9f203. Chain 2 (Bitcoin): anchored in block 958728 (2026-07-19T12:24:55Z), 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/ITV502101005.
Alessio Bondì & Tatum Art Orchestra (Live)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfdc490b95db78bf0604ff71f3c6b301b43eafe666f6477796122593a3994ad4f. 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/ITV502202003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a1f06a1574e73605f2921dfc46b184b2c5eafba20dce34b8ae871de8e19559e. 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/ITV502202006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa873ba3d23d65d7321d560f05d2dafb06a85c5a85942e2b5f78c2e3fe3d95510. 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/ITV502202008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0bca8ec54da5c075c26f57f08eb22ab8186481bbe34d9f6aed1f9ea208dea3be. Chain 2 (Bitcoin): anchored in block 960317 (2026-07-30T21:35:24Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ITV502202004.
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 0x010af9f8730e79e2548ec3e82fb31e1654f92baa7b391e1e2c042280880e7d18. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ITV502202010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d3b7bc15cedef40d4744aa79c7b96e597a9f429a4b16f0512ada5130d0667c3. Chain 2 (Bitcoin): anchored in block 960473 (2026-07-31T22:27:44Z), 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/ITV502202016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c74538a92357ee73fc2b952a8110416c408617b703e2e07e55bcc6bc1fa8667. Chain 2 (Bitcoin): anchored in block 960236 (2026-07-30T09:37:10Z), 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/ITV502202017.
Alessio Bondì & Tatum Art Orchestra Live
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d2a3695ba3c21967c679b2abf08cfb77ead7cd4dd83ff7c74bc2a9318129a84. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/ITV502286001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf57edc5e88a4ce8dc96ba6ba4adb4c54b65bed7a49534fa828f2a8e36cb5347b. 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/ITV502286004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee65778626881a38ecf1e295e3692abdde0ceeaa39b99ba3999bc52904335273. 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/ITV502286005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd0b01c8c5b9d40e3fa78777b0501337437be11b61abd8898216de7ad9a87ecb. Chain 2 (Bitcoin): anchored in block 958765 (2026-07-19T20:47:32Z), 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/ITV502400001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a3689cf987580c9103d4f7794d9fc4f571da9565a3665b3985e5dceaf98a845. Chain 2 (Bitcoin): anchored in block 958063 (2026-07-14T21:07:34Z), 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/ITV502400004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5b7a6cde0cbe3be68622941ac58b855c2321c95253879c0a38f55632b4dae18. Chain 2 (Bitcoin): anchored in block 958208 (2026-07-15T22:40:25Z), 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/ITV502400005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82c06c631318c8d79d07763871069d3fbb5cfbcf763d08c1a4fddc234d394df5. Chain 2 (Bitcoin): anchored in block 958695 (2026-07-19T07:37:00Z), 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/ITV502400006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf636fe58b565b4e20659160f7c3792903c81b0336bdfef6c6b01cd28794ba695. Chain 2 (Bitcoin): anchored in block 958891 (2026-07-20T16:09:54Z), 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/ITV502400007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x763363a3f9e6957d6bfe9422a0690114f741dd8f1ce7bb2a3f75cdff9097798f. 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/ITV502400008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x085300773167b18fd9706abc5b0bbcd930adb8b90f4594a9aae50e800361c8b0. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/ITV502500001.