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 0x2335abb91625c15669b88ed27dee9e5cf23a4963098faa6994691c7cf97d27dc. 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/b27ad174-805d-4c48-81d2-454db17a4ef2.json and https://artists.proofprofile.net/proofs/artist/b27ad174-805d-4c48-81d2-454db17a4ef2.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 0xf34d620c46b8ed380dba6a4e70e119cbaa0395a0535caa552ae0af13fdded4e6. 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/QZ85M1937467.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30723aba696610632b73927870d49c1ee51ec288e37bb8f61c8589117daed844. 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/QZ85M1937468.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e0f80257a9c3172457bf81284dfadb2a682176f97364895bebc7aaebb9eadac. 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/QZ85M1937469.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x689ce7c9e03631f203694212e622cb04dbf642a3be501bbf92ae4cf510f15daa. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/QZ85M1937470.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97ba25a335bbef0925ad599637200f7161a4c3bf848774552699419b8feb07cb. 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/QZ85M1937471.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb41e2abf83a3a01a6c6e5532f37d56f172e07c03576ba8542fe5fb3e4eabf454. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/QZ85M1937474.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee7e779cf196749b7ef8fa93f31961afaa072762e7ef7016e05d5d5abcc84110. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/QZ85M1937475.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf255430fa40024898a638d3ad17c6d8dccd508ae93ff29cb7baab6a5e6abb4b3. 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/QZ85M1937476.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb234d63d6cc7751c5f70c22ef7e438dc48e78eedb38045f4572dcde9955ef4d7. 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/QZ85M1937479.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a98029364008a9c36d9665c1a189b002e08efe15707abad5f1ba1515cc98823. 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/QZ85M1937480.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15e77ec8be223d7ee1c1c889b926e9a3b9e390f9320939a6bf6b5d185896f114. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/QZ85M1937482.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x672b2057cccb0ac5ffa7c29c69543de0ea7de4df9969c5e3916079ecab48afda. 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/QZMEM2091926.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe24a8e6fce4556cde041bc03a0aac145d98f4101bc98f7847f8884b75709665e. Chain 2 (Bitcoin): anchored in block 958563 (2026-07-18T14:29:03Z), 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/QZNWV2044979.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1cb0c53d723d1f653ae66985683421b32df96b382c5d21d40a3b890f5b8538d. Chain 2 (Bitcoin): anchored in block 958728 (2026-07-19T12:24:55Z), 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/QZNWV2030856.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x163289bc0dbe630caf5338257cb94a300f25f3142c1594b6097a735892171350. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-16T20:12:32Z), 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/QZNWX2064707.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81a5365c1beb24077db792a1c1debbd8fc16899d699f5011538d3561c66f66dd. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/QZNWX2064709.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x315e92b5cbcf0943aa5ae73fd30a2ab16be9eedb35d2e12c9642f619eca95f06. 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/QZNWX2066197.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9bf2eab10f67e2ae8a905755ce7168b19baa159da257fae227cb046d8804ea4. 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/QZNWY2066520.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64839eddbe1c8d5dd32c48ac5c11fc4e329ada4f24f5ea01e564677af1fcadb2. 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/QZPLR2058642.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa41986a541666860d045979e3ecd024e2e6885699237c087115104bdb5dbf895. Chain 2 (Bitcoin): anchored in block 958324 (2026-07-16T23:12:59Z), 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/QZPLR2058646.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96cca7e67f47acf72f6b26a93108509aa1a677ee719ca62f890d1f7519999175. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/QZPLR2058654.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1307553f312cfe7e1a00ba896fdb68ad6514e445050006f43949900c4ffda2d. Chain 2 (Bitcoin): anchored in block 958567 (2026-07-18T15:22:40Z), 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/QZPLR2058656.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a49a72731cabe544042a54d59a06b45dfba2a32ccbd56ca28cbd2222839cceb. Chain 2 (Bitcoin): anchored in block 958568 (2026-07-18T15:23:47Z), 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/QMEU32121020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd080d3fbd217a49c4aedaabd7c2dc13ee7f7c033591eb85888c7957904da6d0a. Chain 2 (Bitcoin): anchored in block 958517 (2026-07-18T07:54:29Z), 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/QZTAW2328591.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a65bd2252e261cc4665b2583782c583af206a6ceb36f3d811d328c0d699fb8b. Chain 2 (Bitcoin): anchored in block 958428 (2026-07-17T15:15:14Z), 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/QZZ7S2454282.