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 0xd18ca3d5be3a4384d7e659fa4fdfe917988dca4d49472ae920f42b57eb928eff. 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/641c48a9-2b48-445b-83cf-3ed957ababdd.json and https://artists.proofprofile.net/proofs/artist/641c48a9-2b48-445b-83cf-3ed957ababdd.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 0xfd155dbd6792b4afe9cbec33e4009de02b9de23a7268cfa5b6dfd7886d3bd64a. Chain 2 (Bitcoin): anchored in block 958234 (2026-07-16T03:46:09Z), 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/USCGH2311177.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c2f54344030e804a7c401fac2f896a66bfa96a2160df457ea19a6cf94324eb8. Chain 2 (Bitcoin): anchored in block 958776 (2026-07-19T20:11:59Z), 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/USCGH2311178.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xffa1038fc27ffe739b3a29d0007d76033a8643969f32ada88573afc185ee75d5. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T17:14:36Z), 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/USCGH2311180.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77c7e0175bcfee3a88a5a164d0fa678b564800e3623aef6aab905cab6b632426. 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/USCGH2311181.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ce9feef007c2087adc54b317b5997769010c51fcef666544edd0c672cc1fc68. Chain 2 (Bitcoin): anchored in block 958716 (2026-07-19T10:15:55Z), 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/USCGH2311184.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xecb26e825bd6590c647d94ed8e486053f505c9c28ed01ec66b5fb6ba07789300. 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/USCGJ2379178.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09ceee6ecf33f9c09b7d69173fe95cff1a4d73f25a934dad3cb0d290aa328fbb. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/USCGJ2379179.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe35fbb642896c32f6aad16c24597d8fabfbd6bc2f083c5db9868f160de7a484a. Chain 2 (Bitcoin): anchored in block 957767 (2026-07-12T22:25:13Z), 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/USCGJ2379181.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2426533a4768a8762627da3812599ce0a21f40f31deeabced5633ab20d356e58. 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/USCGJ2379182.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb62f832962620aeae7963669c27a83b69662e2da7284d99779c6f66897c16bbf. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/USCGJ2379183.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4bb030f2c9e0bd37c6274c2ee44065141f90af8e696ea522723c4a6814218515. Chain 2 (Bitcoin): anchored in block 958461 (2026-07-17T23:18:11Z), 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/USCGJ2379184.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66a652de46a879ae74815c8d785d17bfe1ae19a3e051ee2f2af3a84e25b9ef42. Chain 2 (Bitcoin): anchored in block 958924 (2026-07-20T21:14:26Z), 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/USCGJ2379187.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f2698b7ff6ae60bd630eded2a44f8b04849ee6e6b686037dc0644b5aa2dbfb8. Chain 2 (Bitcoin): anchored in block 958234 (2026-07-16T03:46:09Z), 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/USMH92332505.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x179a9a2ca4424b3313f061b6f100cd49ce3b5f14b0606cd47e8edce7186cf624. 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/USMH92332507.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0e86ad2472528d13e0891f4313d8dbdc12cf90dbc17b07aa18f27b2264d479c. Chain 2 (Bitcoin): anchored in block 958079 (2026-07-15T00:21:05Z), 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/USL4Q2327570.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5756f6e7467ae6a1acca530d5d3ea1dac27c043d38c1dcba4caaf1d5e94230d. Chain 2 (Bitcoin): anchored in block 958234 (2026-07-16T03:46:09Z), 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/USL4Q2327574.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6043cb51db695929e6ddb703f7325e2bbedbf9d86875889815c62f99ab4eb890. Chain 2 (Bitcoin): anchored in block 958955 (2026-07-21T03:03:40Z), 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/USL4Q2327579.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0045debfe58bd218372381aa6c49701d3b779641438759fff3ca4382af99485. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T17:14:36Z), 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/USL4R2389023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0bcbcd57b99a62a5153a0932dcd944af3481423b2cc78955ba015494923a98ae. 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/USL4R2389024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46f52a629cf0e75225ebf048c64b110dd7ba914c0c862b3f1eafa7fcc886f432. 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/USL4R2389025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a2c6b21e66dd0d81dc0ea948e9187f6ae4f4705d6e98a7b16d8c120762e9f44. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T19:41:28Z), 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/USL4R2389027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd734a1af20e7a465f04f9dc48056c17d4c6cdb7b1401f8ad20f6243cbd640ac9. Chain 2 (Bitcoin): anchored in block 958447 (2026-07-17T19:47:19Z), 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/USL4R2389028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa23afb5acf03302b5b79bb412c1ea105bf0c7855feb0a692fc6fde0ec600381e. Chain 2 (Bitcoin): anchored in block 956620 (2026-07-04T07:11:13Z), 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/USL4R2389030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb9b6bb6e46adead1d6674715c2311b580942afe6f4aeaf7559023da10864001. Chain 2 (Bitcoin): anchored in block 958091 (2026-07-15T03:17:03Z), 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/USL4R2389031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4add8d7bd79345956580d8075f7483f3a430eced06c5fa45519ab34b966696a9. 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/USL4R2389032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf702d2d8ef845c06029634d3ac68f921954f86068955b87d23919a89aca11e12. 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/USCGH2419026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4297e5972214856aeb751d78e40b49b4677a83143404254a11a211a27dfed777. Chain 2 (Bitcoin): anchored in block 958461 (2026-07-17T23:18:11Z), 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/USCGH2419027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e1e126bb14f11cf64978c61a65e59acf8419be8cd6b8b2a7d49e8007a99bfad. 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/USCGH2419028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x034d7e210fadd11991ad2bc49ad7adfda786d0d9d51008de3fc37a5dc4d49a16. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/USCGH2419029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26e7ae7d25da28bb1d8d55c0fb1714670dce38f7e841f5a24b0e400bed3ae463. 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/USCGH2419031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0f33b61d1062e62efbaa3a9c94201c55b303be3f3742e44fbe94fa7f5fa7a75. Chain 2 (Bitcoin): anchored in block 958582 (2026-07-18T16:47:25Z), 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/USX9P2417011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48be028fcbde7f022931ab5837a4821d6cc4b643a701a13d73c35b3dc793aa43. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T08:42:51Z), 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/USX9P2417014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeec323f6436024bc970b4f36fe3f131d5ba874ac3c00e919b105c71966bc7a8b. 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/USX9P2417015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b009de526b351e96287ae88653c4b8f5174f2fe91b496c0309bc22748636adb. Chain 2 (Bitcoin): anchored in block 958576 (2026-07-18T16:22:28Z), 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/USX9P2417017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90e0ca36870c96a84367c3107963bab14be4d104c0fe3ac59295ad9746599631. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/USX9P2417018.