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 0xcc2feddff44035d88de4ebdebbe53d8ac28a0431d6eee067cb710166892066dd. 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/fbca14d6-5561-4566-81ea-3d1150537f4c.json and https://artists.proofprofile.net/proofs/artist/fbca14d6-5561-4566-81ea-3d1150537f4c.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 0x624e9162f7c2cbeec81229f4bff71d614c62aebb7f27d54e9db045f190d2dda3. 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/UK43Q1704948.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x419f4149d51c0847ee07af59a2220a44e63395bffba39fb222307796f41d90f1. 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/UK43Q1704951.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6d7032b633b3d16ee2527b7f4ef05735e1a5e9c3683ef4414c28093015d5720. Chain 2 (Bitcoin): anchored in block 958058 (2026-07-14T20:20:34Z), 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/UK43Q1704952.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3cb4493db80dc2e7428c760a037618a80e3215397e55407579eaf2dd58281477. Chain 2 (Bitcoin): anchored in block 959087 (2026-07-22T04:32:29Z), 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/UK43Q1704954.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x453554a3777e2a6edceaee0bd225a6d4ae6f00c652cbf888413affb6ea2a3e5a. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/UK43Q1704956.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd291be25f7a7f8abfb63d2b74c51f7ddcd22a4943615e594c0adfcb51354fe61. Chain 2 (Bitcoin): anchored in block 959076 (2026-07-22T02:23:45Z), 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/UK43Q1704958.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b3068dfd2605e9e643f7d76a25fabbefcde7f1ad39512a29719e58d901148b2. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/UK43Q1704858.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x979ca1532a45e270c9fbbcf6296fb03e99cad70989c0070c5e878819e7b5ea4b. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/QZ5AB1724785.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e2db2aa70f0e3ba1c79fa06f385139a4abbc1e44981fe651ccbbb8ca122e367. Chain 2 (Bitcoin): anchored in block 959043 (2026-07-21T20:31:52Z), 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/UKXN22096578.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11a9e4c93bd9cde7a0d5687d1575464fb96c11882dd3495046f39529fe417b6a. Chain 2 (Bitcoin): anchored in block 959001 (2026-07-21T13:46:56Z), 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/UKXN22096296.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3bd39389d090043a6325ed6e6ea2ea64176f81c99de83aa51eb5858728320c4c. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T19:10:22Z), 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/UKXN22096501.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f141f4f30f93d4f67170cad55b43729a01e1b6cb385667b93608c255a3849b4. 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/UKXN21906215.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f348b8fe437e5a304a7a1da9e928a50026e17524879f252e115f36c211b77ca. Chain 2 (Bitcoin): anchored in block 959084 (2026-07-22T00:50:00Z), 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/UKXN21906220.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c1afd4f7ea85eb2c4613c5c3c4b861ceb43d8222a2e7f845022456242ced7a2. 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/UKXN21906216.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9273984932549a68e644588e545b521c2f622a3fcd24fed529d7586f84756e8. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T04:28:53Z), 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/GBMA22101874.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbeffe534e494538eb50bd339e652d43e2ae26b2af17463118848bac4fe76ee6e. Chain 2 (Bitcoin): anchored in block 958920 (2026-07-20T21:00:22Z), 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/GBMA22101875.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4601fc8eb17d061038cbb0988a72feed9fb6e469cce5384368daaaabfee9e184. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/UKXN22242374.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7ea61e59e47587a6455a004484481123cd7113f2575f5b886c9fb663c6e7fb5. 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/GX3Q92313153.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c7cd0acbe73e44af48211cdd27fb2d1280fc4f92f2085391ad0bcad6c55ebe1. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T04:08:00Z), 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/GX3Q92313159.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb6aab1dcdcd9f0766dff0ef67ad3a6a6f09107ebde9be7550b12237bcd4dab0. Chain 2 (Bitcoin): anchored in block 958897 (2026-07-20T16:20:34Z), 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/GX3Q92313161.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x841795713ba1974336f33f876ccde01d9435bc429d5415ed57f26f9fc1ac8aab. Chain 2 (Bitcoin): anchored in block 957919 (2026-07-13T23:58:45Z), 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/GX3Q92338563.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x661bead1c7048a6224742bb0cffcbf12de424844a3f82fbcc98be441439f959c. 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/GBLFP2421018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4d4e65d48703d6f2c2b5a41d39b60ea4dfabc1bca9cf83431d252ef8d8f609a. Chain 2 (Bitcoin): anchored in block 959031 (2026-07-21T19:02:40Z), 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/USCGJ2457372.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76bea5f683b1afbffb8c33da7f2f66979a37cf48e8db368ea37cb0a5e1b4b3a2. 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/UKXN22520159.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04c41f781c7246958cd36efa719b214d4392d1b2e60c023e1ade17ff6c60a57c. Chain 2 (Bitcoin): anchored in block 958484 (2026-07-18T03:34:53Z), 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/UKXN22591002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9dab8c85e3d5931c869cc44a181e7eaee8da966ab1a753447f502a3b3e6d9fbb. 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/UKXN22591003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc73d65b0e920c11114df4fc2ecab3e72236936d3de14bab6c0be797dadaf8383. Chain 2 (Bitcoin): anchored in block 958331 (2026-07-16T21:55:37Z), 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/UKXN22591005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf9892adb879ee3c6f5db684183e327242cf0d1706bc312c423ff9053ceee27d. 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/UKXN22591006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94bdebcb94cc224a55c84137d0664329ad5397eb5dbe5927fa945956dc17b4e9. Chain 2 (Bitcoin): anchored in block 958920 (2026-07-20T21:01:43Z), 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/UKXN22591007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb28e16a2f10f7f8f9e9b78b15da8088d669df2780b75b82179116bbabd4e2aea. Chain 2 (Bitcoin): anchored in block 958969 (2026-07-21T04:58:13Z), 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/QZGLS2509831.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4391ee82c0ae8e90aafaeca7cfc9215cf93ffc1fc4a29dceb56a30df0322cf46. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/QZNJZ2565447.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11637b46b3787e2c64159df8812a433a6236ac69cabb987461e916d2042a43de. Chain 2 (Bitcoin): anchored in block 958792 (2026-07-19T22:55:52Z), 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/GXHG92597466.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x949e52ad2f28038188358ed615515e39d02c6bd532eaabb026f89f248e18253a. Chain 2 (Bitcoin): anchored in block 958808 (2026-07-20T05:31:35Z), 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/GXHG92597467.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5135d1cc6454ad1bafb8548b0ac0f2a9aecc46e52ef3f087928c33554ee0d06. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/QZNJZ2593635.