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 0xa2599ffea35a558ec0c1262da81d831359ee901ca21ca11872c4049550d6a9be. 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/ec4cdb31-c15a-4b88-a943-32042d11668d.json and https://artists.proofprofile.net/proofs/artist/ec4cdb31-c15a-4b88-a943-32042d11668d.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 0xbde71da495a336eab0dbff6faaf0c790f1b05af643d439bd7abac68ccf645a26. 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/BXEA11500011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1795438e31cb850725e913e7dc8ab6444a313c51310c4e635a6ea9215d890fb7. 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/BXEA11500017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb184a48aaf592f23b86000313814c6e2538c88ef8e75df7b70f4f0b2871f8c2d. Chain 2 (Bitcoin): anchored in block 958942 (2026-07-21T00:24:07Z), 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/BRK3N1500002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x837f91cd7391cab0790f276a61d6e397848e31c6692dc1983a3671fd38051d9b. 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/BXEA11600004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49ba64e6a4348b556ae936b66222b23d139794d567e6f2e4604aa599485322e1. 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/BXEA11800001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6de71283f7b59a5ff5b1a36174ef1cd6887816cbe43242e386cf2127d001d20a. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/BXEA11800006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89a72f3cacd83c67a477da4b2985aebdcfcae4811eb56d5f57013781b3ed7465. 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/BXEA11800011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89a72f3cacd83c67a477da4b2985aebdcfcae4811eb56d5f57013781b3ed7465. 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/BXEA11800011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6de71283f7b59a5ff5b1a36174ef1cd6887816cbe43242e386cf2127d001d20a. 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/BXEA11800006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe425274d74eb392c5968eab83104c5f16f1573a9182d1db2ced03b3557f21c26. Chain 2 (Bitcoin): anchored in block 959010 (2026-07-21T14:03:04Z), 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/BXEA11800009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xddbb5dd6bea3fc6481f3a9dc5db7de381ffc707bb7f7164b694da41c2877921b. Chain 2 (Bitcoin): anchored in block 958428 (2026-07-17T15:15:14Z), 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/BXEA11800008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x508bfbb1d62c6e914501970050731d7de056df4541fa7bd1bbeb796ab05a4eaf. Chain 2 (Bitcoin): anchored in block 958420 (2026-07-17T13:33:01Z), 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/BXEA11800005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49ba64e6a4348b556ae936b66222b23d139794d567e6f2e4604aa599485322e1. 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/BXEA11800001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8bd162e3b6ba9baa62913dca182f32d23cac0957ff95bfcda095e50fde564ba6. Chain 2 (Bitcoin): anchored in block 958572 (2026-07-18T15:47:37Z), 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/BXEA11800007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda915d69fc659e060062e5949f6253e3c238ec874bd11a578d1e992fffbf885b. 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/BXEA11800003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc67e036856e4d3a931a5ea6b94872a129daa31939876ebd208f63654c8a01319. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/BXAPH2100205.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ee7e66a35e1bbcfe92720ee5004c200a44706c884896cb625f04ffcf85501ff. 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/BCDPM2100001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd3ae54066ed7f8ec1fcb04863be237d8c735b64a4a677f274f41979932951dc. 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/BCDPM2200006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a0ab4a732ff15ac7f7d37037764b947c8cf515bc75070e7331009cfc248db0a. Chain 2 (Bitcoin): anchored in block 957043 (2026-07-07T13:52:39Z), 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/BCDPM2200009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b510aa30addda6779f7b9724c48126ece3ecc2819417d7d845e598401245e72. 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/BCDPM2200010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdce274c91e2fbbbe05dfedb805a9abc42e181c662ca8b46ef8bfa6b1b50fa859. 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/BCDPM2200004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6d29586ac34c9f03b54afcd780092b715871e31c4b83da115fe46537d8acb24. 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/BCDPM2200003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6537ea166958f6597ce60fd73c88e86d8f84e938c5915fa3a395de990aa52b47. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/BCDPM2200002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d3c322b6ca0d63052e3b52b8f0c726c51ee25c7fa92830a9938b51a08a0f883. Chain 2 (Bitcoin): anchored in block 957075 (2026-07-21T16:30:53Z), 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/BCDPM2200008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d2541cf77ffb5601d73c48a90122371774af307c6a961900184895c99ecd9d8. Chain 2 (Bitcoin): anchored in block 960144 (2026-07-29T21:09:47Z), 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/BCDPM2200005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a4190ed009afe336c459050c86265e641066d25116173d22cc5a0d2456ed9b7. Chain 2 (Bitcoin): anchored in block 960216 (2026-07-30T06:39:12Z), 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/BCDPM2200007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b29186473549abe4f06f5513aea11d028489bfacf0332a57c7c28db91010f57. 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/BCDPM2300006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x138bf513fee79614e2d19b67ecf86dbb6a7df9cf1e033d0b0d664816a36a989c. Chain 2 (Bitcoin): anchored in block 958846 (2026-07-20T10:20:13Z), 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/BCDPM2400003.