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 0x025da13da0024428518bae0220d19ee6d7994c4a54ffe9d8e782d7305827c3ac. 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/1f0bc66c-2bd6-4f5b-a8f5-dfd16e1ea0c6.json and https://artists.proofprofile.net/proofs/artist/1f0bc66c-2bd6-4f5b-a8f5-dfd16e1ea0c6.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 0x6473f36084dbb627fb2c09cf7557acda5caafdbc52d33a6ee5218c37e8258641. 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/QZMEM2366995.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4b5bf6321a24087b11df65136a558a60177b908bd788462588fda381d4411d5. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/QZK6J2354211.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x357ff754a93ec17329b9f694869782fcadc79aec2296c2ed828afa7bfddd2b18. 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/QZMEM2366998.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb5e6a9cb000cd55c2088b9a9e3daf70499cf5e7ed643dde534f73919fdc4c77. 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/QZTAX2370034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad07b7cae25769e9af8922fafb0c4233e60347dc1df791091a68a50b426db308. 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/QZTB52393656.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f938702139e444d96c1847337f8bf46e4ef6b347ed6d35eaba73c352e15301b. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/QZTBB2359318.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ab2881ef0f34c80cccdb056985a1cd3dca7101d832cae716b75db976d6579d1. 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/QZWFK2319864.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c6b94baf35e58efe9eb2586e3b68bd9c0ad60a722a54c59cb4ec808cadb4c5e. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T08:04:42Z), 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/QZWFK2319866.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x061dc30dfe195f23515f266aa975216c40058d0178a819d9502f5e4cf299fb3e. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/TCAIW2479005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3239afc226e597cc75c6fca4625a5a159106eea7cc3b68f4595bfdd0b87f4568. Chain 2 (Bitcoin): anchored in block 956440 (2026-07-03T04:03:57Z), 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/TCAIW2479015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7712748170619812903230bdaad92bd1fd09890bf267c72e8dd1577358416e9a. Chain 2 (Bitcoin): anchored in block 958738 (2026-07-19T15:57:49Z), 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/QZTB32440474.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xadedaf7b4881d00fe7d86c76f3e8b3cb943ffd09aa1542a719b016be48c3aa43. 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/TCAJA2443282.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2b126b7918de92e692164ea7e262b1faa213861abdac8c471c6b6e6ced7ecf0. 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/TCAJA2443252.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x142b3e27e89c312cb353f40fd1e18b2ea300d592eeb36261fe629cd867a25637. Chain 2 (Bitcoin): anchored in block 956440 (2026-07-03T04:03:57Z), 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/TCAJF2561343.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7a2d0cda852e5ca2e3718a32de82706736a390902c73b996a38a40b723efca8. 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/TCAJD2430186.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a22a05a2a9b381dc26ce1ad883f17ad2b7a28e04f5cc2e7f0a03eb2a85b4db9. 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/TCAJC2430149.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1a4a41253e9df69ae750ff9ee9b7bb7f0b2ec6f1b5b7a2af638764569e49a79. 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/TCAJJ2563127.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b474c4c4da1f9424fa0e8a8e68e61c3f6a15328b8a350ee33f8cca756acc215. Chain 2 (Bitcoin): anchored in block 958140 (2026-07-15T12:36:37Z), 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/QZMEM2366994.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6473f36084dbb627fb2c09cf7557acda5caafdbc52d33a6ee5218c37e8258641. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T19:18:10Z), 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/QZMEM2366995.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4b5bf6321a24087b11df65136a558a60177b908bd788462588fda381d4411d5. 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/QZK6J2354211.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98a8b23b4456ced492687c4baa1fdc25d768e957fc9b947658c89b1369efa046. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/QZMEM2366996.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3876409e357ab4ee88c9b8168ef088a25895278f2bb0d342df9d5c00360c90d. 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/QZMEM2366997.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x357ff754a93ec17329b9f694869782fcadc79aec2296c2ed828afa7bfddd2b18. 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/QZMEM2366998.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0078ebd5acb78795fe7feba3986980ef30c8a0abbcf25dd1896fb5dcf5258b90. 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/QZMEM2366999.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf1ffc8939854ee2f885cd0a61fb101b3b8f03c4f32f7dac8fcabd5f689d7eec. Chain 2 (Bitcoin): anchored in block 958106 (2026-07-15T05:35:13Z), 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/QZK6P2372052.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29b502790fa4ae7a3e2ed42bda495e03acb3574d2fd582dbca3e8fa02a01f4f6. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/QZMEM2367000.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbcfd548e08d5ea51d853c21a66f6d3d862fb633868ba3d67dd74cf26b7ee7911. Chain 2 (Bitcoin): anchored in block 956578 (2026-07-04T02:23:20Z), 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/QZMEM2367001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf14b90c57513d216a46fd68c68b3d34cf52ac2005adaeab3c794d7a1ac665e0. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/QZWV32541309.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf14b90c57513d216a46fd68c68b3d34cf52ac2005adaeab3c794d7a1ac665e0. Chain 2 (Bitcoin): anchored in block 958839 (2026-07-20T07:01:59Z), 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/QZWV32541309.