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 0x717995e2d21263c93ff4c81c36040a66c07a066e9ed92a490566375889762729. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/141784a0-caba-4fa5-a82b-085d2eaee10a.json and https://artists.proofprofile.net/proofs/artist/141784a0-caba-4fa5-a82b-085d2eaee10a.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 0xc5159eae9f895d82da8c88ea943c558d01b84304074c0dfa089532eb15ec9c5e. Chain 2 (Bitcoin): anchored in block 958800 (2026-07-20T03:04:54Z), 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/DEZN82363105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x806f13240ab10e16f9e7ae9a27530c42d365c310e6e4fc732c3a655c7c5c9be3. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/DEZN82363106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x058f26db4db85dc2aad4cb7576e24afbc6d9a18e524514250d8be643eca88f1e. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/DEZN82363705.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x935fa33ec9a6f62232590d0b11603f24189c765e31c6c46942bb0c538244c604. Chain 2 (Bitcoin): anchored in block 958825 (2026-07-20T07:50:22Z), 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/DEZN82363706.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x084212b745bc66f9ed5336f269b2f0aa4ad51f18296c6d449e1e5a2b1cd91f58. 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/TCAIC2447156.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48707e8eb3ed8337a9948b56a332819404e3fd45bdd0942841a5978fd8da80b3. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/TCAID2423386.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71268d7c338d20073a94046c75f6ac29ab0f329b3395d7dbf4c3ba3d7e073227. Chain 2 (Bitcoin): anchored in block 957761 (2026-07-12T21:55:15Z), 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/TCAID2423389.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xacbe4ee5b316b49fed51886a5373cfb2bc14a36e6b8ec7dd18dca01c8ea6ded6. 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/TCAID2477287.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1ed9b85637507552a1633c9ae5846b1f32c43dd1a54e976d6e1993a8aa4a7be. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/TCAID2499275.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2bcba7fa8e66754fc7dff093039e5a144d04ff8d9e69de748f39a2eef05c6e7c. Chain 2 (Bitcoin): anchored in block 958802 (2026-07-20T01:04:02Z), 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/TCAID2499286.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6433154ab584123ee53d9f983e1d2de6081ef58ddee41ce236f0f5c283439ffd. 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/TCAIE2459785.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9da38115bf28b5c8b3adada08a87a99ce18d035631ec67940c5f8eff4d47a0a. Chain 2 (Bitcoin): anchored in block 958410 (2026-07-17T12:18:07Z), 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/TCAIE2459791.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0827eb3efca52eea152b4bede6bf8ff20cc5038936b42e1d45bdd2c0cfec70c6. Chain 2 (Bitcoin): anchored in block 958746 (2026-07-19T15:36:35Z), 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/TCAIF2472072.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb78b7ba82c362e0ed6ff900d8a5cb8ad504c9243b39cb469604407d5134cb3d5. Chain 2 (Bitcoin): anchored in block 956841 (2026-07-05T22:14:35Z), 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/TCAIE2472075.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2048dfa921a8c3e872e908c62b19103686ca683ca08b93c3c5044e1c39cafe4. 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/TCAIE2496185.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x524d5515ee7666ab6e8b4a010b13be1a630da8f664514fba71444c33b26097a7. 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/TCAIE2496190.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4666c6e3275af95f9a953a0a65a9b5b7a8630e181df0fc05ff60b0746d998092. Chain 2 (Bitcoin): anchored in block 958798 (2026-07-20T02:37:45Z), 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/TCAIF2428131.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6975de9a0e08f5d908593b7104a7f9622efda674524af65b66b36fbee5692a3c. 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/TCAIF2466917.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd459573d60ab7a2f73ca56c2f9c2bd6aa0c1295f013102b89690840ed30e42d2. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T17:49:48Z), 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/TCAIF2466918.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc581703d1913bd8c2bdf5df9fdb4ab1ef2e5c973c0cc32d4358d078d1b033f31. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/TCAIG2410926.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd054d76888ad2a8a573d2db7fda5c3685761076ef428dd087fb1ab4fced2b82. Chain 2 (Bitcoin): anchored in block 958796 (2026-07-20T02:10:05Z), 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/TCAIG2435899.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x781fe41f50871d749c40759812bc20ddda2205e12539eefbcdc47f50d3f88369. Chain 2 (Bitcoin): anchored in block 958774 (2026-07-19T22:31:23Z), 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/TCAIG2469238.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x758196915c87ed57eef5109acd869239deb93b1974b06dcd4a33d6ef60b3ebd3. 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/TCAII2415236.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaebf289728d7fd72fec9eae6f09d622f15c69d9ccdda0114130640206705c5e0. Chain 2 (Bitcoin): anchored in block 958771 (2026-07-19T21:30:36Z), 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/TCAIH2415238.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0dae85a76e15114947f2a98ba3fbe4f5f2f7049310b237a6759cf34b2db44203. 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/TCAIH2469518.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xacef152f6f9a35a72c1c5bd80298a27e07ddbd0815b9eb00706c5c6097f3a996. 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/TCAIH2469519.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8525f464ea732eeb090e1fa2093f8e4130ecf931e17ebd74d49c1ee60ef0c921. Chain 2 (Bitcoin): anchored in block 958796 (2026-07-20T02:27:50Z), 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/TCAII2437185.