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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3406e43427a479a0318bfb903000ad6821fc586673fa19e0ead74070136997c0. 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/70f9f74a-6ab2-4967-ae82-a613bfac0539.json and https://artists.proofprofile.net/proofs/artist/70f9f74a-6ab2-4967-ae82-a613bfac0539.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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b142a610d4a73082d16d759d7d42d2d65d406385abaa17bd66eaf2e021e357c. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/FR9W11517380.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x240b1427d38a477fe26f7fb891212a7e8f1c2e04b30c62b34817217fa5b755f1. 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/FR9W11517381.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x839009e3963e8e9b4e2fadc1578127b5b267963dd9272d3c9b32acfbace0f9fb. 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/FR9W11209894.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5dc65dbfa54a1363bcc2e82b5917b590a729ffdaa6a74b0170b9142ba3510392. 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/FR9W11209906.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c0f51693de872f9925e2b3cd5c1bb5e7c92571f500321718fc8e073acb3667f. 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/FR9W11209907.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e1b7f1563ef71d37eb0930194db63158f6255b6d44bd653857c20e5c046d651. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/FR9W11209901.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa74000d87ddc99fedbb325fca49e523dafbccbea262aaaf7b7df84756c0b9d77. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/FR9W11209895.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92cd49dab9709e475b8eab96787092c9217839dd196b291ebdcbcbe543666844. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/FR9W11209908.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f80a80cf44168e09cb585dbe09fba31855472229e5e58a986573530b909cc55. 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/FR9W11209900.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d7ba537f21ddf7db07febae99770dc1ce2f0ec70f498e3027ace0f827e7ec87. 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/FR9W10704460.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10610d0c5fdc02570569ce6590bef39a76c57b6a124d8b0d562bb7b804f98907. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/FR9W10603772.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5a223a35066bf53ce90f6d15052efbe8608145714c4ec7d0f2021dba734c5ba. 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/FR9W10603774.
A Pura Essência da Malemolência (La Malémolence)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x322e442ae5d4b4ef6c7f2c2e2a05d221ddd5b10ba99d492412453cf7dfdd19d9. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/FR9W11727763.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x322e442ae5d4b4ef6c7f2c2e2a05d221ddd5b10ba99d492412453cf7dfdd19d9. 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/FR9W11727763.