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 0xcbb84b4af92354c0a13844c2af495d1973652886cf5356ff7969e9546edfe4b0. Chain 2 (Bitcoin): anchored in block 953645 (2026-06-14T14:31:42Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/3f7f6477-e926-4234-b818-7ca367890d96.json and https://artists.proofprofile.net/proofs/artist/3f7f6477-e926-4234-b818-7ca367890d96.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 0xf1697b482d3190c15ab764d8a5e789a449f949ff810826c89d9f9c0b9611f63d. 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/PLC062421668.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b495d27573c83862caf66f9e2d2b80319132d29d68ef588c4dece915853408d. 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/PLC062421665.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97a63a255ecb562166d858c606eb28570f69214eaa6b0b2e6f9109a8122f346f. 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/PLC062421663.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa67142ba81093082a3d746f5dd9ab29e0d2146850d21d4f976ba768d2f7324a6. 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/PLC062417050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43d8d1dbc472e781b28dec2f75f7ae328bf8fa128f07789e0914133b45ce0622. 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/PLC062413908.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0d44b7e675d5fc5d7ccb1574be7cc431ab06267e87c6f878e2104c3b82765b5. 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/PLC062421666.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda971a76dbd97eb3896b02abd75b3cee62003df5376c383fa2c226477ad69cbd. 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/PLC062421661.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6427346e59643c7dbc67dc6356c3eb988f0d10122f88751de2c48b29d43bcd15. 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/PLC062421662.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa67142ba81093082a3d746f5dd9ab29e0d2146850d21d4f976ba768d2f7324a6. 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/PLC062417050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x738115dd009fac6d71ee2511f09d587187c4d54973035f8105a18d0c1219c471. 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/PLC062120540.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4b4aaf819c9e67382fc07eb8be5768603c23d3108530045a8e583419aab84e6. 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/PLC062224742.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10c01be88ccc63bb8185dca6771a58366851c41c40b6f465fc51e742f557a383. 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/PLC062224743.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38a9eb14274f8e77eb6c9b67e84712833d13a64c1f869e60f46ffa79bde27058. 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/PLC062224744.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff4036c04ec973efcd1299582532acef9541285d99f9bf9a7a257b0d30450685. 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/PLC062224745.