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 0xf236c84ddf7378719476a93afe538ba6e61afca615a4be65ea76f27e10845edf. Chain 2 (Bitcoin): anchored in block 954342 (2026-06-19T03:22:39Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/8959cce3-54a5-4dce-a00a-486a14a23c7e.json and https://artists.proofprofile.net/proofs/artist/8959cce3-54a5-4dce-a00a-486a14a23c7e.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 0x42c3d2235b3b99897445d5ea3e25bb26446e2c29ce5738c01a3a48d2cdf3182f. 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/DEZ650710543.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x041c5ef969db27e6873598656564d0db586af28c89f343bb8e8b7543a852b11c. 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/DEZ650710544.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0da55fbb7192c04435dad451676b9a2d0134c44eef14c6f622cd6d60273865d6. 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/DEZ650710545.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2d24193e8bdf9f61e6cd8a5a5179af4fa46f05e89bc9b14369f18283b652c01. 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/DEZ650710546.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a246db84213454154948d3e6a1ffe54f6f9e7651a7de3b57b8469b111f18a9a. 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/DEZ650710547.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ccdecd888e749e9b26e822f554895a9e8aa480fa43b0111797739465be947f9. 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/DEZ650710548.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d10abbbe1ac4546f704e716ade6703de8a77d0640331aabdc34c7976d9a162f. 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/DEZ650710549.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a18c586c951c8954e7e7ec4fdf11c7f9a627cdf7c1a624b65aceb2baec12169. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/DEZ650710550.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaeb05ffa56d8c760722a21a7c0c38f191219ca1ad03a5f833cc8a074f4e3eeb7. 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/DEZ650710552.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd23d6aad0a61f985bb6e4cb38d66883f8caea06a096fe4d9f8e408c8137a8ccf. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/DEZ650710553.