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 0x60d36d1daf1473da4b709c9740a0d52bbef3012afa0c8ad7f500e687c5fd17f9. 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/040c99cc-caae-4226-b1c8-57cbb6cbddcb.json and https://artists.proofprofile.net/proofs/artist/040c99cc-caae-4226-b1c8-57cbb6cbddcb.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 0xa9a8ac60d6d4734764bd985d273e47395db02521404692abad0ae206269475ae. Chain 2 (Bitcoin): anchored in block 958853 (2026-07-20T09:11:53Z), 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/BXQAP1900004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb4d5d7bee8b6a236bc008ca2e25a0434927435c814eca22c384f1a2bf9fc471. Chain 2 (Bitcoin): anchored in block 957867 (2026-07-13T14:55:20Z), 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/BXQAP1900014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf45de420937da13290b5bc243f04788ad5ebac5d46dfd54f09117e0d479d804f. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/BXQAP2000005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a7a17310757a35725244b1b2e18ac9e33964c92627b0f53a1006cf3420c400b. 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/BXQAP2000007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaced95b960569e3cf4363d4b6386461570de427dd7f70ff5232fa86aaee022d4. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/BXQAP2000003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec38eda6b8f928b9a52dfe738ee962c8130a637d81c61e0aa3c2453cd1be2ea7. 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/BXQAP2000010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a4ceb25e0f9232e61583a97cc939508acba715da9efd2488e474dff5e4e870b. 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/BXQAP2100001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1c3c43dc9262fd7abfc12809359129b2e048454924467d3e5687513fb0ddce4. 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/BXQAP2100011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb69da6e936e306404ae6f20ba8ec87a73aee737c00ac8659ea6427384958b69. Chain 2 (Bitcoin): anchored in block 956578 (2026-07-04T02:23:20Z), 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/BXQAP2100016.
Chamado (Ao Vivo) (feat. Coral Back to Black)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12cc712dff4038c560d69f3547f0bae1edcbcfd0f6ec22ef56b48ee14fc6ee40. 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/BXQAP2300001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2e2fe73d297d1e786fb4082ca22501bda5c9727cd3a241b2139f538ea9db0fa. Chain 2 (Bitcoin): anchored in block 960376 (2026-07-31T09:09:19Z), 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/BXQAP1800001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaba61a1097cbca3ef4a0f90d38fcfdf0f035754f1cca2dca42c54b5c416957cf. Chain 2 (Bitcoin): anchored in block 960368 (2026-07-31T08:26:41Z), 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/BR4W12100007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13911987f21b63d9c3cfd4079b6aa19c11849cc96d98b8c619aafa74f8db63c7. 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/BR8FS2100002.
Está Tudo Bem (feat. Diego Karter, Duo Franco, Áquila, Raquel Miranda, Idma Brito, Giovannine & Maressa Cruz)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb8be001b23e473d4894165c48161970ff73aeedb055ff6ef424abaf5de36fea. 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/BR8FS2000002.