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 0x03560c670a3070272953b9dc8f5264c69265a9054d3eaaa125900642296c320f. 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/fdd51805-6ef6-4e60-985f-2344516bdf9c.json and https://artists.proofprofile.net/proofs/artist/fdd51805-6ef6-4e60-985f-2344516bdf9c.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 0x38e943ce2a2e86ab9b8aa038b7dece2d8d3ec0797af07e49557c50eac6d64607. Chain 2 (Bitcoin): anchored in block 958700 (2026-07-19T08:09:50Z), 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/US7VG1904452.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa438ca31641cbfc4ea1042b60c28539b74ce138d30ee42dc059b21a870a5f221. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T08:02:17Z), 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/US7VG1904453.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5412e4a5c192fb8904e1793278b914ad45aefe639cc164ad303ff1300626ad2f. Chain 2 (Bitcoin): anchored in block 958805 (2026-07-20T02:22:58Z), 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/US7VG1904454.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf04b5185661e8d7bcc416302038f00c987e139c3235d77380d1d9b145b517ec1. Chain 2 (Bitcoin): anchored in block 959024 (2026-07-21T15:31:18Z), 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/US7VG1904456.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96a98ab1d3f6011dc5c4d399bc72e7e8a0b84d56ef7be2b87936fcc13636748e. Chain 2 (Bitcoin): anchored in block 959061 (2026-07-22T00:05:17Z), 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/US7VG1904457.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf06d11ae8bff9a59201f98791e13333d0a7f43cc13e8e407d7cd657f617ae667. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T20:32:27Z), 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/QZ5AB1971699.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46c6fcc480f17ce3a405e5ee2115b2c81ea192dff4f051e4d1874fc32205a00a. 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/QZ5AB1971700.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d562269f37e1a04db7d78da470289e175129e247c95f6011bf97b0e7c95a189. Chain 2 (Bitcoin): anchored in block 958823 (2026-07-20T06:32:18Z), 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/QZ5AB1971701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x823d83e13db96b9b7e88d918dcc50991312ab0bec13cf16884cdbd08b6e5e8d5. 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/QZ5AB1971702.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07adb530d666e4c65160a96ebfd12acf8189fa6b92d9e60e76624de8b4bded30. Chain 2 (Bitcoin): anchored in block 957782 (2026-07-13T00:52:48Z), 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/QZ5AB1971703.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x150be50aa6613a704d5b242177f479648258d46949136a866d36e9a86744e842. 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/QZ5AB1971704.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x137ed131a0a73fe1c32f569f7bd6c01f40522b4d320425ce82c166b6e930eb48. 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/QZ5AB1971705.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d909a55462e05b697fbdd73e01fc4c2572ec4831b7897335efa4cbf11e72e67. 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/QZ5AB1971706.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20a07f7099068fa9b9fb65f4d0cca7181e4c350ab7d281d6638993c6ebc23896. Chain 2 (Bitcoin): anchored in block 958798 (2026-07-20T02:20:31Z), 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/QZ5AB1971707.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7caaef0bb7851cf6a3e772e5eeda9e8a9a2c1f14f03ed390ef07bfdbbebc3b9a. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/QZ5AB1961705.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6a6b467bd2ce6e5ead68cf424c361c247f8f8a83833ad321da73f7de5763eef. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/QZ5AB1961706.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65ef725ea1debf012787f78ee49ae78d468e3d3f5895bb46e802de068b7dee2d. Chain 2 (Bitcoin): anchored in block 958212 (2026-07-15T23:25:50Z), 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/QZ5AB1961707.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38a52dd7c2d3d58bf9e20055dafc22d20c9b4b665418c71ee214be7c9e06f0d4. Chain 2 (Bitcoin): anchored in block 958774 (2026-07-19T20:03:27Z), 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/QZ5AB1961708.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc277fc668e94a382c3c4d2397be2826a996060742cbea4033e9b99b68d4730b1. 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/QZ5AB1961709.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c1be5a04543a8867cfa62afd0e3158b6d73d21173fe34573fc0946a7fc5c594. Chain 2 (Bitcoin): anchored in block 958251 (2026-07-16T06:29:25Z), 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/BCAX72200122.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8fe8de79b3a7d8f1ef215f767b4ebcddacfd2f64a1c7ab83fd924b38d71da6a. Chain 2 (Bitcoin): anchored in block 958342 (2026-07-17T03:48:23Z), 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/BCAX72200119.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc965d37fa83f68aea0dc6a8ccc9635372063258304887917744848889d86b5db. Chain 2 (Bitcoin): anchored in block 958554 (2026-07-18T13:17:01Z), 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/US7VG1780367.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75aef7fcfba08708d05e448e0fa094153e0220991a2cefe78e06cb0068b64179. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/US7VG1780368.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54e826bcd783c96bc62d4a75c6ee76e0f707c7a7686be08e8bd4b8e0d64d97a8. Chain 2 (Bitcoin): anchored in block 958700 (2026-07-19T08:09:50Z), 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/US7VG1780369.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa355ba0d856998ceca0f77ebf12c2deb704bc2a7c75400591e9bc07f5bfa92d4. 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/US7VG1780370.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03ffe77eaadd6ef01a902a2fe8cbca30f4c85604c1aaf7ce48bab551d640c2e7. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/US7VG1780371.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf585d63bf5d97e95036f04a8a537d27953ec4921ea020cf0bbb9b70633074d6e. 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/US7VG1780372.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaeab86d567037a14b94c66f7b2b1f288e927b8c4af77de9a1fda4bb26c1c782b. Chain 2 (Bitcoin): anchored in block 959061 (2026-07-21T23:26:12Z), 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/US7VG1780373.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9bb718327a65f12f2fcd5632dde18a95aff35051a7ded251b80d0ccaea60f870. Chain 2 (Bitcoin): anchored in block 958067 (2026-07-14T21:26:15Z), 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/US7VG1780375.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb28bfcb91ac98a4be0c64f0341a77570612ee5a5602fc2b212fbeb672b58434. Chain 2 (Bitcoin): anchored in block 958711 (2026-07-19T09:26:32Z), 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/US7VG1780376.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b11304070d9c6f0fc15ec6b0642ee21d370f4895ae3e5e614af8326376cfb28. 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/US7VG1780379.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22aac87974ae46d3fd62ae940094de1a13e4b488c80254c319a6c6c38a80d4de. Chain 2 (Bitcoin): anchored in block 958708 (2026-07-19T09:08:25Z), 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/QZ5AB1735045.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43ddb34fa8095e19fcc494a963da5b824987d37f3c8a1bfc3c2c53b217631ef8. Chain 2 (Bitcoin): anchored in block 959024 (2026-07-21T17:25:54Z), 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/QZ5AB1735046.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63cd11fbc71263000ba1034ed48e0605e4b034b966686eac1e80e7ececc5a821. 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/QZ5AB1735048.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69841880c6b29945d6c30f7ac3252e1964b56fcc1d67ebe273ed201e08383a20. Chain 2 (Bitcoin): anchored in block 958975 (2026-07-21T06:12:52Z), 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/QZHZ31927432.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa5e985111e1a31da330066db890ad0b3b177772560311b939877cc5462b1e06. 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/QZHZ31927434.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74dd9b0710d8395581c14e85b80793c03ceeebab644c54cfa8eaa680d84d8e63. Chain 2 (Bitcoin): anchored in block 958897 (2026-07-20T14:57:46Z), 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/QZHZ31927435.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x944af66132c22f48fc63fcb88e98d7d08ac951497c34be1d1194f96b98993fc0. Chain 2 (Bitcoin): anchored in block 958903 (2026-07-20T18:12:22Z), 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/QZHZ31927437.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47c43d100f0d9675e8870a8f0b039566bedac5639af319a51d0214e95bb57779. 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/QZHZ31927438.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4af606622e692986496579cdbd20146c06c4af9bc1de72e6526cd06aee6b464. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T09:14:21Z), 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/QZHZ31927440.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf358109c08f0bb8a3334aea696a52fe42b38098390d9196492393a11a9782833. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T08:10:20Z), 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/QZHZ41966091.