1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → block must exist at that height 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 0x1eb2a64fbf55adee65e510aa37c71dda65442234240ad18fa5c04697fd25d165. 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/1a6be673-02cb-4ebf-b157-ed1af2f23950.json and https://artists.proofprofile.net/proofs/artist/1a6be673-02cb-4ebf-b157-ed1af2f23950.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 → block OTSBitcoinBlock must exist at that height 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 0x481e0f47e51c609e216a6ff51e531f2a346278e3d228dedfb1712c7529c5e04a. 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/QZMEQ2412012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7f1f611da7b1a4449d47cec1f7819309d14e920647c5151e0898894d761d3da. 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/QZMEQ2412013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb41d4ca3077bfb66ea8f114d0be093c9f7713775462e179ff26eb58bd8ec07f6. 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/QZHN42402633.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x732fe61acf2b6245168e44976bded548396b0ff4511b51f0ac99ee162b487a77. 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/QZHN52343346.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15deb9ff6a6e737225a70c81edf3dd343a6c844c70c0bc1fef873a4afb03e733. 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/QZDA62310413.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x169cca578dfd6112987cdce3730de56c403007c742646488598de166b09876a6. 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/QZFYZ2386793.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8882a69f635a913dadd4c5effcc52b140c5b2b74859f4e399b8bf4af66fd6b7b. 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/QZTB92274814.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x586f48c93738212eef1168ae121774f98c80cd2e9408fa7763ea3e4acf764b99. 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/QZTAY2249995.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a16506ddc8021394e2e41f5bd3c46339e74e298e7422bfa96631e5a1364f217. 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/QZRP42218422.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41ff8679d9d80e37698524f07aa7d3176426a9359eceab3446f07f91ad295ce8. 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/QZNWX2237089.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc88206e9e72d943de7d582e56e36c84f7cc60910f94f710098a50af4788320e. 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/QZMEQ2243537.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77d7cad03d32140aa7e774ceb8b5fe40e57680cfe91e1048416014610d046a95. 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/QZMEP2263344.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea537495db53a369ddb5a122aa4eec6b98bb900ee01170c9226346d98c235683. 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/QZK6G2209244.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3035c8c8cf54606c11322460a12930f5fb4ed4b35d2555d273ea5829c99e32f. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/QZK6N2242302.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x206634ac26dd1db61f6f0a7b35c12036d5b82791a9c3067735ac78ebef2f61aa. 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/QZHN82229438.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef59446130f82e0fb9dc38de43353a902caede9e50aff6a660bd2e1aaa0944e9. 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/QZHN62221712.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8421c5defb1e02206f815688f519aefe53c6f370892274ac38bda0d0e1324910. 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/QZES92214406.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08d86011682aa79d062cc531d2ff694d52a0ddc44272e86d2eca6c4374897329. 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/QZES52202200.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88d188704117118facfb60a50a6c4da6de97f621215df8dcdfbd8cbda1311473. 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/QZFZ72216507.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb03eb0a6edaa3f11f76c21043528b8cb71beeefc79b3906a8e2d8b3f207e6787. 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/QZFZ72216508.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd476b67ebd5aad7de8ec5fa7aa97497d324a2fdc7e59fa8b95bb5d3d6407e18d. 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/QZFZ72216509.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71cf4bf4541256103962914a7375117756080ee4b9a2fdad9ac1e485e29b7aa5. 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/QZFZ72216510.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef9601ba671074f52f093f766e08f824aecd79e408d41bda6e96d1b44bcc9e60. 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/QZTAU2140817.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb0476a6e1dd3f8432f0bc3f2ffb41f2163a63485a944f081103647cd9cbaa64. 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/QZTAU2140818.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44a5bd60d3f7abe45a0b22a272b2d2e05604ab96e45fd6ea4d30709dd93915b5. 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/QZTAU2140819.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce0fbbecdab3d4ff98bae83f7a244f4cd5a5ed8c2336f84f08144d76b119e60f. 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/QZTAU2140820.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1ad89be508bf876a0c33416b64cf52b07bbb19c2863b944235088886a5cd9c9. 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/QZTAU2140821.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d9a463bbed4164a196a7277e0f0cd47b6eabd3f8d087a882f6244c12e6d5b2a. 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/QZTAU2140822.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1f134bd521de0609faa0f99f6cf1e2bb58dcb3e8cb635ef983eebbf15beccc8. 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/QZPLR2196143.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbbc0b554eed2e5ae59873facf63d315224f60c96593c6fd67ec53da06035281c. 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/QZPLR2196144.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d5f8689f4519ca333cdbe8c9743a0e9fc4946472ca45c20c39bda5b5bfb8e04. 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/QZPLR2196145.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50fccd34b8f59be443a0a35dac191f31f5508367306b619e85b0b0b5ad1a601e. 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/QZPLR2196146.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf75abf3bd43adccf19c1b0fc899be5e89d540efdbd7de791d458c7a5e5299774. 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/QZPLR2196147.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5adc1e5e8518720478854ac422d0c98f4333fcba7c32b27bab531cbb01095dea. 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/QZNWX2108717.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99fc48b9d931fd30598250a03a5c0a3646909e92e83635462125043c78e02e1c. 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/QZNWX2108718.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf19b0036372325d768bfaca62a546c9c362a99c20f402d534506592c52cb425d. 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/QZNWX2108719.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8cc44f0b136330cc8237d5fe2d4f567d5bfada8a335fb8a9b9dd77d035455b90. 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/QZNWX2108720.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdaffc7cd54bf1354dfd417141079570336a31409b57298cafa4c2aed0448c6fe. 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/QZNWX2108721.