1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27290a4d24fefa1f9452b5f11c3db99743e8228ef0e20d204d880c145d7201c5. Chain 2 (Bitcoin): anchored in block 953778 (2026-06-15T11:57:35Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/d37d442d-004c-434e-a411-82426a37c2f4.json and https://artists.proofprofile.net/proofs/artist/d37d442d-004c-434e-a411-82426a37c2f4.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 → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb71227faf2449bf3192a8aa8b2e8348dedbb5f5ca470bddb1b081edd14f64d73. Chain 2 (Bitcoin): anchored in block 958660 (2026-07-19T04:21:53Z), 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/USL4R2470862.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e3568cd36409a345d75249d8c17b09aed796bf59b7fef3c4a01b41b69c4c8a1. Chain 2 (Bitcoin): anchored in block 956440 (2026-07-03T04:03:57Z), 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/USL4R2470863.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38394a4bce1ec1efec98d2ebc86950cb07eb00e45880b7f80940b19f35d7f5c6. Chain 2 (Bitcoin): anchored in block 959047 (2026-07-21T19:17:28Z), 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/USL4R2470864.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba28433fb1acb12f75073fc7b6ed06d64e5e2589aaf6fd60f5f06759be1a215f. 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/USL4R2470869.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce3a8ad9d6cf1b67855dae4ee3046de62329f31015769123c3708930f55434f9. Chain 2 (Bitcoin): anchored in block 958234 (2026-07-16T03:46:09Z), 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/USL4R2470870.
En Vivo 1983 / La Redada (Original Motion Picture Soundtrack)
Presentación por Manolo Juárez / Palabras del Cuchi
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3eb5754c974c75e1d358fad13903c6af2073d7e353844725ddf994ff79540e9c. 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/USV291473866.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0dd3f919454d08cc20ad019656fb84ea4895eff33ea7574b5fa83b472702960. 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/USV291473867.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd68dafcc6ce5fee939cc7efc823d864de12305c4fbcbcf213c56f82f91d7b7c. Chain 2 (Bitcoin): anchored in block 960095 (2026-07-29T11:07:37Z), 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/USV291473868.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e750af065f985bdf8510a762bb20ef9a94c8d309727860f67bea9950bca2a9f. Chain 2 (Bitcoin): anchored in block 960321 (2026-07-30T22:27:30Z), 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/USV291473869.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb5daa13671afac4d8ba3a562ac05987b5f616b1d90facc1760e8c8805acac06. 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/USV291473870.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x254931fd23c97e522244ec59bbff7959af04c4ff426989c46fe873b947721861. 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/USV291473871.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3fff90020cd3c0f9122062e6f5cf039517c73787ce6f66586c8d2cf76bbc9ea7. 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/USV291473872.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3aa241f781a8e77fad589d184b77229d6561480f100df7208d0da383fd096dd. 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/USV291473873.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4092ed79d1a4b61257b43fa0874f575778c462460b59379627fe0f3552ac7a1b. Chain 2 (Bitcoin): anchored in block 960121 (2026-07-29T15:22:21Z), 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/USV291473874.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2fdbfe40b32ca595ebd8f84cd8068c01b2aca209a2d8ca010203f3df53a513a6. Chain 2 (Bitcoin): anchored in block 960348 (2026-07-31T05:17:02Z), 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/USV291473875.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad02a2cca89e9569d5fdcd3ffced20f9701e8d654e162580d8e2d52149c9322f. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), 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/USV291473876.
La Redada (Versión Brumesa Sintetizadores)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda0ad75f8fbcced693203956d2928e5a76ab95a99ff74405ac9e6a1fe9986c65. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), 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/USV291473877.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc290309ffcbc33b45eef11dce013c89d47a2d51cb820b1686b5f172b0f243290. Chain 2 (Bitcoin): anchored in block 960503 (2026-08-01T03:41:24Z), 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/USV291473878.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78345e44d916d2ca846eff567e36a01f4555dc41fc499f0a896c317de2266bb5. 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/USV291473879.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb825a6e34ff50b3bcaabaaa793985e25faed1467fc151b12dfd459173cb8072. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/USV291473880.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5c7b1e2b5a4c8bd19ee0460d34d0d3b61cbbb1610f468a0a17c6c5b63199ad3. 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/USV291473882.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e67f5ddbc879fb14c0b6b61c9cebafd740f9640d306eab495af530b48bcef4f. 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/USV291473883.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9254ad5c257e664ef941e1e69ae2887d375715851ad1f7c6386ff055ffb1bbc0. 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/USV291473885.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd60f72c009b4676df5ea3c289ba191575a7e0c1bfe049843c7b843a86fbc5632. 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/USV291473886.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6544f74e4d1da433ca5b8e782247e5811b6b7c9a6b116d0ab9c6044bc64bdc7. 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/QZNJV2344908.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d29119ab0da5ce0367abbecc545a09ebe88b9c86769c5f235c90a8341afb761. 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/ART721410241.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a754dab0c7682526251fdf3df44c88ce3567ee44729a483b1a4f85c4e00b828. 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/USV351463501.