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 0xc51586c64d2a2a136114b8bc8992fec70304740e37ca1419366075ce91d3fd40. Chain 2 (Bitcoin): anchored in block 954784 (2026-06-22T02:53:59Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/e00c0ef3-23f8-463c-8997-b188670e74ad.json and https://artists.proofprofile.net/proofs/artist/e00c0ef3-23f8-463c-8997-b188670e74ad.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 0xcb33b4324be695f6b26f8f4170a6a5ffb53c5e2f4585b5e8b4ce0e03fa4e9fb1. 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/QM6N21596348.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd332b6b8782c053e53e1a0c94bab1ddbc98084e18d04641e99853e43721d79f3. 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/BRUSA1700339.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x813c783503b5284c025455f5f9d09b28795b2467740a86a45c5dde124a7e3f18. 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/BRUSA1700343.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x375300cb5cd5442661fe0a814fc7dc8ee6b2b81b4d5a138c7404952f74d4b850. Chain 2 (Bitcoin): anchored in block 957025 (2026-07-07T10:59:31Z), 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/BRUSA8600001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f3cc3c36ace9b57a4d8c72bbe38653cf9db71dad4c9f67333b5900c1a287fa0. 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/BRUSA0401700.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xabe250f9bdf2ede2d4d09e82b02fa59395d0edc720228316da88eaacfae288b8. 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/BRVR10900620.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00f9466a876928cb97f2c71fb8a00ebd1b86370ab1a34f41d188a47f88349b5a. 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/BR19C1306508.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e1236b0a57fc0e69a2c04e71f4a5ee9cebd3bfdea05c94eff78c9d46a09c2b3. 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/BRVR11300216.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a637632459f43dd0f3943068504ef8c95df029a5720c1c5f63a36d7d7dafc69. 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/BRVR11400070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0fc8e29db3772ec25c3ca38e4165a951ea7391685a93ccba7ebb3f29cd3c7aa3. 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/BRVR11400235.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc746119c0b3f992d5a52fa7a25f4a16e8f277ae391dc59a7d0c98fdff81a9a29. 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/BRUSA0800056.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6cad32818d653c51ae8e216c42a8c75ee5e86f69e5cc81499793a9b7a3305b96. 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/BRUSA0700288.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8afd2bf034ed076c0113022a964111d9989c8a43f5df0f28b35f3ce051a9a657. 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/BRUSA0801076.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0b16ccffbe400de4fd4f667e7781af47f404e9fa30c3f2507ffdcbe4f9a84bb. 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/BRUSA0801087.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0e3f15917ff89e8d16984f40ffd820db4a31a588b117727c829b57b9c38964e. 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/BRUSA0402521.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9e63e1cd57893f3232b86810370de25fd64f27a14e8a914a75a34bf5c91d3ed. 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/BRUSA1000164.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf0f89f9caf021ff644afe2f2efe8c9ce135f9c402d59a3532cfcf74c300fe16. 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/BRUSA0801084.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d9d239d6dc3020199d3ab11a4ee0da86eb8d2daf26360119250a70e8f1079a8. 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/BRUSA1000165.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4898128bf15cef9efe63c848db48840ff7b60ee6f54f25efc491347e35ad7d80. 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/BRUSA0801077.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d2fe157a5d61630269a8f3855dbc753f2c1e91d6cce02dbea7fbeef51c6de86. 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/BRUSA0801081.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x872d43f3285730fa5d2ba5f563cfd4d9dcac68200ef374586e53b927a02e945d. 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/BRUSA0801082.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4e78dc99de83afedc95d606f6566cf6caabc982bc365a70c29a62c19563e4bb. 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/BRUSA0801083.