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 0x530529bb4eca0e9f91389be05bba367297481ea7acf08dc1d4b563c4d1315c6b. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/a57852bf-276e-442c-8ffd-35bb4148916f.json and https://artists.proofprofile.net/proofs/artist/a57852bf-276e-442c-8ffd-35bb4148916f.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 0xd6756905f7140be987d8a465c6d4b59e951122ded955092768fcf9079fd5d670. 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/QZES71878939.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa182bb909c62b15fea1df407a9c41c50737357a5b8c5cfef9cd426ac43790f4f. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T10:56:58Z), 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/QZES71888506.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xacf11a6de5f7abb2183ed7f93e0296dd356e0bba174a2976e21f3113e6435210. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/QZES71971948.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2cf1d101727dd2602b12510c8a3a2e2426f5681ee8d0169ef7079860ec44359f. Chain 2 (Bitcoin): anchored in block 956745 (2026-07-05T05:33:35Z), 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/QZACR2000263.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x374131e8900cdf23f179eca7ffbfa746721dff2183e33303026af80ef30e283c. Chain 2 (Bitcoin): anchored in block 958196 (2026-07-15T20:38:50Z), 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/QZACR2000265.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29bfe9ec1de5baa248b29ed118a17e8f8eacebc59ed2053a51dc880108f3a1da. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/QZACR2000267.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19d77f218f2d1122fc1c82db874c414937191b8ea5fc1df19fc05b25d2529807. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/QZACR2000261.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4041f85641eb237f5db6edb8eca54d3b47d3882dc737a2b968f0876c986d9d6. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/QZACR2000262.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x374131e8900cdf23f179eca7ffbfa746721dff2183e33303026af80ef30e283c. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T08:20:01Z), 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/QZACR2000265.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x186af403fce128def588528ea87a8f8c6e6e58ba3fb0c7ec4372993c4f17378c. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/QZMER2221543.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2290f66a8928a7a3afe1d75c44481af36a353d3871b95569261cbe6a9dd0a38d. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/QZNWX2287072.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdddfa1880109e2ef02f1104cc97d26fe22eb84b7999ccab9d8373c53ceb45606. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/QZDA72393266.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e946880f1ded11626dbbafee580a030367ebdbde36e4b3996ba1f11ec91247d. 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/QT3EZ2404857.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0268c3a81744ee5d5bc45fc2175923b1337344be36e2ed3dd6a24be51a4ec9d8. 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/QT3EZ2404860.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ed201583ca531d293df1805d0c29ae8b5654f0135dbeb2ced2dc8130e58a3f7. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/NL3M12412799.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ac9c20b326ecb827a639bc8c70f8ad024b733d119248e41d6174432c4d77878. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/QZWFJ2543402.