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 0x9486b4a75047c1333183220ea92d115e96acfe69c435e6dc71173a8702858c6e. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/059aad4b-a9df-40b2-8261-7cb686fddc31.json and https://artists.proofprofile.net/proofs/artist/059aad4b-a9df-40b2-8261-7cb686fddc31.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 0x7b7bf868cb4ad192d12aeb984b9a66815b30b5ae68c2791b152e1cae6d67d13d. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/FRZ089700020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x828a4bc17fb71fca981688bdb5df860307ccf4d7c83e9abebe4821fdc01bf6d5. 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/FRZ089700030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d8de32370f929aaaf38146b3510afdafdeb25cbbbb771393738ec9a27d64bbd. 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/FRZ089700050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdcc88678444d6a5567be0ec176acf19cf6b2a09bff57299cbce4ff6b646b9754. 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/FRZ089700060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x004a148df3fba7edcd43b3f9f3b058c6395c044a154cffce533da07aec7e2389. Chain 2 (Bitcoin): anchored in block 958371 (2026-07-17T05:45:43Z), 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/FRZ089700070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3257f274d8939bb27287cea299c145992e31318d3c7f05ee9ce02c469c9beee. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/FRZ089700110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a118de834bc17f66470b809a0c3f5ca2338e7a1f7d5c24d46caf7db3d35f02d. Chain 2 (Bitcoin): anchored in block 958211 (2026-07-16T01:42:06Z), 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/FRZ080000290.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf96c6bdcc73971a1af5dfa143f74dc20500ac35af9ef26b427250a56c2855ec. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/FRZ080000320.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6177a4228471b198ccc46b1cadecac773365bd679f86b4eb11c58e7e7fa295f0. 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/FRZ080000340.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c1133589b861ae4b33d73e05a23d45e8d504245f4fed59913c595d6756424f2. 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/FRZ080000350.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6d40f567b6ce05aa7bc32bcb290752c68d0fb8b68f1fd039c512454a98d1bd0. 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/FRZ080000370.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x505558d220d6497400b2dbaad7410760ff7e36949fc96d2703717c73ec510f0c. Chain 2 (Bitcoin): anchored in block 956711 (2026-07-04T22:48:52Z), 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/FRZ080000390.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f73378c224b52feed82be1ecbcc3be054dafba11d125974b1c1387a86611e96. 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/FRZ080300396.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf003a7c842fa5a25f759f304fe61e475f5366696cf2e0318b03c8c16d18b627. Chain 2 (Bitcoin): anchored in block 956711 (2026-07-04T22:48:52Z), 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/FRZ080300444.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xafc224822d97ede2582b90add23814e3e0bb54855a330529e99869b5dd04715b. 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/FRZ080300394.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5e8b46f2fef0917e8c2a25349a9e2eab9bed0ab872bdab446f56d3e9ed88ad4. Chain 2 (Bitcoin): anchored in block 958742 (2026-07-19T16:29:17Z), 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/FRZ080300398.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef8691a93e9afef67ac3cec6a9310768d2acf91b9cf1e025386ef3197f536767. Chain 2 (Bitcoin): anchored in block 958130 (2026-07-15T11:19:04Z), 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/FRZ080300400.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9d57cbc3f8b382b04565619ebe54dcd6c66be564b68d89e3449a46315f0e924. Chain 2 (Bitcoin): anchored in block 958346 (2026-07-17T03:59:53Z), 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/FRZ080300399.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd022ae2c1e650a4150e451343fa754a7ce155806828a8ac63d7c2b9eaa43edb. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/FR6P10800460.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02356d0151d446c30c16579f5185f02b6c52929a2e2ffea706d8850627bdf713. 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/FR6P10800470.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd58d7e30a97eb704681c78efdd65afb36df6b2e3c34cf4b35a7c281d72b0ad4. 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/FR6P10800500.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0bfefc248a95921fd5a9bec4a3b5b0e441fa17ab2146a112fd6ef2ac7d113176. Chain 2 (Bitcoin): anchored in block 958695 (2026-07-19T07:37:00Z), 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/FR6P10800530.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa7aa649fff4076950de1e7f4458157dd553031bd0b14dd3412c7e84f75bec3a. 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/FR3HD0800010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x684e6c0d3a092e27dbc8bc633a6adc460f143fbcfc271e3beacdf1cc6392c4f5. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T11:59:22Z), 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/FR6V80853240.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40be8f2101033d0a55dcbedff97516add30930374843c25e3b9086248461e7c7. Chain 2 (Bitcoin): anchored in block 957833 (2026-07-13T09:36:32Z), 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/FR6V81260521.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f0353d8b8504cfabbc5787bf4561784cc7623a3e6a56b2fdd6e3f29b0e8fb94. 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/FR0U11500015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e8137c59877150aea658fd3e6d33cd0685c1a2855df038b7448b0a7145ec04c. 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/FR0U11600007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30c1a9d4888580ed1828f298e45b3c504a25a4908e0c246a72b7e40ec0023d80. Chain 2 (Bitcoin): anchored in block 958468 (2026-07-18T00:27:51Z), 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/FR0U11600005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4141a22eaffafe13239809cf51b2dfb9b0c0b242f5f03cd5f37f0db0545a54f3. 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/FR0U11500032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9dc3994a418b89c1644a771463f1a9f5c588b37f5bcd3f2fb9dd8ab1721b5519. Chain 2 (Bitcoin): anchored in block 957770 (2026-07-12T23:17:00Z), 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/FR0U11600006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e661769f5e91b8f9b40f5130449f10c62b0d9770ddc658003a330611d37db72. Chain 2 (Bitcoin): anchored in block 958520 (2026-07-18T08:19:09Z), 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/FR0U11600009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4c060ad5b1b904d76fb953ab5f37ed424551662b84f5e4f3493fdbfb3fea8e7. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/FR0U11500029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7cb12563fa92e276e59f24b3ff81f7231a49c4251e3b08454f96cc90f742ea43. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/FRZ189800124.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18116330935d189996334f7ca980ac23b829c770622896de859dd1bdba5f99d0. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/GBGYQ1700006.