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 0x3598ada66c5a75009d0a569fefa59c53e488464082fab52ea5f4ceebdfdb91b9. 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/62f8b339-0e1c-480a-a78f-f6f98e43f156.json and https://artists.proofprofile.net/proofs/artist/62f8b339-0e1c-480a-a78f-f6f98e43f156.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 0x11d57143e0393f8f33d1f6a0bc867b685407aa2d72e3c746d79aa0e8241874d1. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/QZFZ32375662.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc2b599b3a019816efc08f971a649fce818ffe654afd0c2f7f610c1845f88d03. Chain 2 (Bitcoin): anchored in block 958271 (2026-07-16T10:50:23Z), 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/QZFZ32375665.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7eb5439cb0ea01b77cf876f33e06753552be5907f7da7a5ba489cc637326115a. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T16:27:19Z), 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/QZFZ32375670.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb05aa26d4327871cd3bca292255fb248f3379c0ca915294c1611ff358a0e27fd. 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/QZFZ32375676.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b6e123b6b00d0c120fb073df5242e34cfe7c092bb1d8997f41c349654ae275c. 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/QZFZ42368466.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x578ee4777b526f91cf1626ccb4b05f53d39308a9e355cb4ab1f6b58ad16bcf92. Chain 2 (Bitcoin): anchored in block 958711 (2026-07-19T09:26:32Z), 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/QZFZ42368469.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf67ea5ce98064278a5d6e5b357eb93c1eecfe86e03e4710601f2fc67e3485cd6. Chain 2 (Bitcoin): anchored in block 958341 (2026-07-17T03:50:29Z), 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/QZFZ42368473.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f5f097ff75f7550794d1440ed69e1b0812e7dea626e0845a651414ffcec2884. Chain 2 (Bitcoin): anchored in block 958350 (2026-07-17T04:03:46Z), 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/QZFZ42368474.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49c7d366a7038075e4e505e2a167de8a951004d5234c2a3a719d76b77b9b96fa. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T16:29:20Z), 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/QZFZ42368478.
Homenaje A 3 Grandes De La Musica Tropical, Vol. 14
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63a5503e79a881d047c1e499b4f99b54167ef35b7a33ab1e4e242bed7a446ad9. Chain 2 (Bitcoin): anchored in block 958397 (2026-07-17T10:29:45Z), 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/QZDA62366651.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a50c37f16ff4e16a470f2ccd15b07790fdf57c72e7eb36d59056015d80c20f2. Chain 2 (Bitcoin): anchored in block 958067 (2026-07-14T21:26:15Z), 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/QZHN42318340.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d95e16a9f2560a32fca231acfdcbd309cc10d11b3a60a101bc89ade9f3812d1. Chain 2 (Bitcoin): anchored in block 957745 (2026-07-12T19:20:20Z), 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/QZHN42318346.
Homenaje A Los Internacionales "Carlos Y José" Vol.29
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe713cfe768ad9b0a7212877d4872a3a99fd23effbeb5426a2990c1fd2d6283d5. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/QZHN82398470.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x916c29da8eaf00265eef0bfc26ca5d23197e7fe9f0675b3a99afad8f1dd1661a. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/QZTAU2388971.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10ad445a53b7be36f1b882e3763549acb5544359b2ea2a34542da6d174b9bce5. Chain 2 (Bitcoin): anchored in block 958216 (2026-07-16T00:00:34Z), 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/QZTAU2388973.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbbddbb34a17abb26715a3da935f02cd4dbdc8ebcba52a4856e2ebc342207ee28. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/QZTAX2337506.
Huapangos, Polkas Y Choticumbias, Vol. 19