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 0xa7aca9231beed7c39409075c293490f4323c1d34e31f084c9e881e237425f5a8. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/2501fdab-d96e-4551-b196-5635c2837477.json and https://artists.proofprofile.net/proofs/artist/2501fdab-d96e-4551-b196-5635c2837477.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 0xc5cf540dc75ec6a41acd2b07b562578d3306aaa9b2e71f79fb53a3432fb3e090. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/US3DF2210783.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xace4a841666a911881c6a83c6b10ed5a223775d755e708215fe7c876b43252e8. Chain 2 (Bitcoin): anchored in block 958074 (2026-07-14T22:45:25Z), 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/US3DF2210784.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe2aecd676bcc3190f507a492daff6b057fd56359b576444b90997dbfb35c2b0. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/US3DF2210791.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x567a170496ea0594cb03976a75fed25e08b6a094c0194042d84bfae722598359. Chain 2 (Bitcoin): anchored in block 957750 (2026-07-12T20:39:38Z), 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/US3DF2210793.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6d22179acee364fe22770dfc1267815a8ebc04bc9fb24597ffcc5b0e8a61300. Chain 2 (Bitcoin): anchored in block 958074 (2026-07-14T22:45:25Z), 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/QZ5AB2095745.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ad553f543f1022b23600fb6f269328e988008756a2b8afb931813785a907fcf. 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/QZ5AB2095750.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7380abf787cda8c33411fab5e9364c50b4275b5db8f9f28bba83df7cf86dc24. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/US7VG2074138.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc77559d19f5d6be3126c85926452d4455f9052b00598aeabf853d63942816565. 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/US7VG2074141.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6fa079c9298355ccd35316e7c9271497d498c5e3f5880037eef1011576cbee24. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T14:38:07Z), 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/US7VG2074146.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc7304addd0fbb8c6b825b0e29783adba42bbb9f93460fc48979089c8b964128. 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/US7VG2074147.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb32fcae0393441286547195b62928da736cc89e265d75aa0a7c6c5cf0867faac. Chain 2 (Bitcoin): anchored in block 957750 (2026-07-12T20:39:38Z), 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/US7VG2074149.
Sonia Morales, La Internacional Reina de Corazones: 20 Aniversario
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa19089f4061878d3755f34fa60dde35738aaff74e5d7e635ef2bcf5832f092be. 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/QZGLS2087679.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb419492f006da0586ca94ca546075e0d934fe36fbc8476c9175dcbbd873f358. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/QZGLS2087681.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd323a584d0ce23f4f5d7a7ff384d4dc30ee730d8ec78de82da6cc46efa809879. Chain 2 (Bitcoin): anchored in block 958074 (2026-07-14T22:45:25Z), 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/US3DF2210806.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb96f1a539421b903a90b13b4bc267c5607b0ea534b8643a8ef70bcfa08f721d4. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/US3DF2210807.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00a98864844c2569f7414892df85ee769c48650096585016e39895dbdd81f2c8. Chain 2 (Bitcoin): anchored in block 956402 (2026-07-02T22:05:07Z), 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/US3DF2210814.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x083b014bb912468e6675dda7edc123f8dadf6b5ea2d2693c5d43034e467fc49a. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T15:55:19Z), 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/US3DF2254356.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcff2e201a4146c8d0e120a9f21fe0c61b0aadd79aee3753ec4d33d2f3759fa2b. 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/US3DF2254358.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2940ce27326722643e5ba71039ede6967cc411ba8ab11197e9ab1d69c92410b0. 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/US3DF2254361.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb09f5301dc8a29dc26b1d35c506dacccb6238dc4e428d9862309772a36a1ae1. Chain 2 (Bitcoin): anchored in block 959043 (2026-07-21T18:40:26Z), 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/US3DF2254365.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1775ce29aacc895a7c64b73e2db285a0af7ec006630b213d1fd4b685d14545a. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/US3DF2254366.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd878c0af35407d5c907e73570101413e2719e38816306721ab20d3f2f711b0d4. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/US3DF2254367.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe37f357b606f7f6d12a34759b0ddc9fa1e186bc4f09dac5d0443ca23fa5bde36. Chain 2 (Bitcoin): anchored in block 958808 (2026-07-20T02:49:15Z), 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/US3DF2254368.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02cf4ed050ed86ecfa14e988cce847d0ddf6071641b143262963d2fec2a4809e. Chain 2 (Bitcoin): anchored in block 958959 (2026-07-21T03:51:22Z), 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/US3DF2254369.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd7c3607b4f119915378503b8fe49a9afddaffdffd97bb9041ee54c9df9d64ef. Chain 2 (Bitcoin): anchored in block 958935 (2026-07-20T22:08:19Z), 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/US3DF2254392.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x757cd58da2963b69da7d7ccf12eaf502345dbf2bd475afd4653a1ac257d2d3e5. 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/US3DF2254393.
Cuando Pienses en Volver (Versión Cumbia- Salsa)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70a6af38b5a3084609de467e340529073a7b1b620027eb7be5e40320b03658b6. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/ES71G2052029.