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 0xfd8238eea00f91726e6b7beda40ce881b558574478ebb9f8026f4e4e0f42bdce. 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/2c0b8fc0-b5f0-4dd8-bdfe-7f005e95c1d9.json and https://artists.proofprofile.net/proofs/artist/2c0b8fc0-b5f0-4dd8-bdfe-7f005e95c1d9.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 0xb6da1ce1c7a1260187a2207e2051320db285c5062902bf7ae7b5566c7ead488a. 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/ZA56E2315040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x327c8005c14371d754dc85af33c8d3571b496474333e86ac60c986ec48cee1a9. 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/ZA56E2303693.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84eeea68929ec465d19d16ffefa04e973493460c0357f71e57419e8033345826. 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/QZMEQ2300626.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0addbec4394a503d9af11e2d8cd3047e8236ca0d0293cdc58ede16b5c760b171. 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/SE6I32430450.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff65f020ea921e8ee0ee2c90b9f5220c730c1d4a1252fa944ba020a8625d8eb2. 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/QZMEP2201542.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe1d11d002abb9e9ac9841f1855e9800cdb52ca56418fa30259c1ce0acad2d90. 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/QZWFM2349586.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7af573cf0514f30cc0b33a535de0e16c626cc50da2ea4d59d6905051b7bdd7e3. 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/QZES62347217.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89a62fcfbf1afec6d5dbae8e6cfef8d5d04c9a3e4022c495231ca56ddeec0abe. 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/QZDA82362453.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8bc453e27a6bb0b76eafae0088a462a98ee0491cb5fc4e52a5ad14d74747c80f. 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/QZTBB2259030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b4f8a3055efe5c773bb7e1773c108a2cfeecb11d384c95da6a058fabf71bbfa. 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/QZTB52221515.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd84f30f8d2a0fd898a9f7f5bcaef6b3aefbff34c6ffeb4e059c1f5b7b0842b1f. 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/QZTB42298857.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdba09e2a214cb1fb0d624d70c7810d1fdb6bbf97a5d6b296e03fe06930beeb6d. 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/QZRP52243476.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x774870ab8b992cb790eee884f10f4b36a986e6d6602592a9e4ebf971df50a5c9. 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/QZWDW2430893.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc245534a8bff45fc1240eec552fc7f39891576b8f8fef09bb1918b0e775b7ad5. 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/QZWDW2430894.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01c6c565b66d3b666f948e854977883d8bcd5be4625a4aec3aa51171b4b243f4. 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/QZWDW2430895.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28d414739f223f0c6b6e4fc9ef9f22bb726d3ac5172b4c001d41c5196de86ea6. 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/QZWDW2430896.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8508761eda47e138cd6da56a7d19d74a4f8cf66eaf93affe872f04bf591b8622. 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/QZWDW2430897.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ee13232f13548ce0f90376e9170e9772d7ad9bb41bb3f368a26e0174ccdc00b. 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/QZWDW2430898.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2631918c212a5695dba1f9794005cc958d4e57e1dbacc866d9b840c23524dbb. 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/QZWDW2430899.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd521a430cdc0a9399b41085d918a7e093819beb24562e013543bbeea859a2b00. 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/QZWDW2430900.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb19e5e9ace3a70744646fa6788f137395e30db7ef993790266f49c0479dee2af. 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/QZWDW2430901.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f2d7a5c2e1981c75d60197f6b3d7e918c234d96907f89214778e4c783cc38f0. 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/QZWDW2430902.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5248a6fab42b659dc6b23651fc3979066882a8917e43bc7d78606273a181c902. 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/QZWDW2430903.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34b1758585fa49d5c76f5c52fd0ad5fda70968c916f9bb94f7fa17f66054c149. 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/QZWDW2430904.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xefc2f69981767fc1f46f799c573c6f78d823871e7f073576775ee225a924b7a5. 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/QZWDW2430905.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf36bb434a6c1862f08557e92782250953c43b95a28ed5523b0dda3066f534759. 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/QZWDW2430906.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe68d66bdbb3645a13526dff828721e472f12b7bd625d0199ba6c4f343df7581c. 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/QZWDW2430907.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac5c47aa8b2bfd4f4e4912d204fb7f0ee59d2925e6c5ad8152c519feeefda9fb. 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/QZWDW2430908.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18c55bc07836793b09fef79e2903933c396e5cc9eb7bd6debefa80c43dfb1333. 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/QZWDW2430909.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b2a3132472b98437f3d15a7d2ef7a2ccfc66d943820d8783981a3bbdb0ecd11. 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/QZMEP2360305.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb40c477b73948491284b379c47e7afc5dcce89df45f1eabaccd1b369e271afb. 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/QZMEP2360307.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x922232389f41bee1a53f0f7f62f4f4983cb40fc41182cece2b0c0125d953931d. 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/QZMEP2360308.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc00f6141789bffdb7cad7b666e4b3584c477ed44df4bd3d7a69f7934698cfe04. 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/QZMEP2360309.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x527b050a5d46471ce5be96c1ef689bb2333155d8a22b65b0e42644116f0b733b. 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/QZMEP2360310.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83e118b78843456e48aba217c28fce8ee8c844412d63532610caf8e0410a89ca. Chain 2 (Bitcoin): anchored in block 954130 (2026-06-17T19:07:14Z), 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/QZMEP2360312.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ae26294100cec59dc5df921acef121a7e7c327203a282e9e4db91bdcfcc7adc. 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/SE66N2296135.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcfbe51de1362361488ceeea3287d97f564b171caf710820136deb61943447463. Chain 2 (Bitcoin): anchored in block 957052 (2026-07-07T14:50:41Z), 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/SE66N2296140.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48b9eff683e00c3afecb892ed47f121aa82ae2e3d3fd59f827b338187b7de230. 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/GBLFP2390086.