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 0x387e502881db5ef6cd4b83231f95819685af67b08545a1e0e76b24baf0685078. 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/2208c462-00de-456b-b831-02b75f5d02f2.json and https://artists.proofprofile.net/proofs/artist/2208c462-00de-456b-b831-02b75f5d02f2.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 0x6b45534d235bc18c036169654c45f0a1ce57cc2ca76bcbb151c06a5f09a51335. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/QZW9L2301393.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe90498d4414841d78bab5637932dea685fb5e0ac8bd164976dc70589804e8770. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/QZNJZ2371288.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39a2c0beaa29283c07edcd9f0c3904e0a370adba2aa7bb8feb7d5968d70ee58f. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/QZW9L2301395.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5fd37177db269e665db14253c5bdbb8b53861ad884b5b71776287902f8372615. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/QZW9L2301396.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b148576b47fc90f371c0ef31e72c1179908485cdc4b6db9838ff292f1f54653. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/QZTVM2312860.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43b90c7fa3d13bc26d5471a68ff9ff760dfd401a7cce50484773ec5311f0854b. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/QZW9L2301397.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6097ae89389c5eaaecd13b6ae420a6fc1b4bfea60632cfa30a962dec4efbe88. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QZW9L2301398.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18568a8fff65aa25e3adb633652f3fe243d3befd302ceb4bfda5dae88828952f. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/QZW9L2301399.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc831b7b7af787184550b56150ea3cd33cd423fc6b02d5ae824f23a365d74f11d. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/QZW9L2301400.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49ab63d7b6957fd9b50a4a169802738c8f10a4894d91b768873f94b6902740f1. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/QZW9K2388904.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95b86bd6ff93b4324b442101da50967153bc12c12b0c3be0fd21c4e4c6d4f6dc. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/QZW9L2301401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8bc2adcac8629e4dc9e26514aba3ab1511cd1b89b6e52f16970713535127e74f. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/QZW9L2301402.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd8a036d66a83a1b2df72a3e660559c312e9eff05afc72b9d6dd0344e3c4d209. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/QZW9L2301403.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef7a22499f9c5e75042f2a4585ef8ac3352532490ece8d6fe22fcd3546ee6677. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QZW9L2301404.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd62804988f112946862d9b55253a6852b63fbd5333a661dd6b01a313c60714b8. 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/QZW9L2301405.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe90498d4414841d78bab5637932dea685fb5e0ac8bd164976dc70589804e8770. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/QZNJZ2371288.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7bc3dd8594b00e0769778d391dd32850f73ac60bdc77bd2954b1c0f0d48cc8b8. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/US7VG2303374.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56930f082d827f5c15186ebf3c931f55b0c26379a30dc65c3ebb4800827b5b25. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/QZTAU2447064.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ffd5916f9cf419a226872d97a33fd8c7179cf664e3ebf436d1b577021b525ff. 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/QZTAU2447065.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2d611772e2e9514b8c5d85cb0b7487d40d5735e9efa4b7c830e810f15af2675. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/QZTAU2447066.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x496448e0d6dd35d15f402d49dd46f93f005eae83b94aa313bdfe1fc4df0d60e5. 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/QZTAU2447067.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4295732b11ae56f36cdf87fbb243dfc64387e003ce5f8537297969f2da75710. 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/QZTAU2447068.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74d29eb43cf56b8886573da52b1e6daf52f7e44e64158498b34311fe470e8c46. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QZTAU2447069.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x194de1a28931a8ab65ae9b3927cd84d649f4d8829cc07594f1823b202aa80a8f. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QZTAU2447070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9289f4e5587080ea3795848da81239a239e223e764c261562de4c2fd9ad373b0. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/QZTAU2447071.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d450f6f70d18dec0d2a86991dcc269dc87905cf59d937e8876b3a382951df51. 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/QZTAU2447072.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x567133ce395de64c7a47102d43e080612da9826147cb56604e06507710b42972. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/QZTAU2447073.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26cb649a84ba781242b43c982a8fc106fae835fd51af09be3c52495c96e65dce. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/QZTAW2481441.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe638cb2a28f278cf088de7c672f4372ef10d4d4fc0e18552edd49bbb81efacc2. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/QZTAW2481442.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b6dcb204ae66e722f4ccbb8e0fd5916bf122eaa0018971d351477f0033cdb6f. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/QZTAU2447076.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83736d65bc95d72bf965f035c84212573a76538c539f9a9fb61be83f61939d3f. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/QZTPX2413775.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x446612be198f334dfc9a7c7bef16a21f74bd4ac1acd563baa9f487608c05d0a9. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/QZ5AB2424273.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe973dbc8e4bf3f65d952a32b564a0de6a0cdde87a6e040c7500a4548444ab36a. 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/US7VG2462446.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x984953473b0f389648834de80eb05ee7d071bd0f09516847947d86a3ba30a7ca. 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/QZ5AB2424274.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca2383a945c40a4c317a8852f43bc39a83bdb6f5cbacb32f8b55df09983165c6. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/QZW9L2323171.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d3490f66028d5a92c604aca773abd8a8c8e2241f70c272868a9e88c53422e4f. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/QZGLM2090656.