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 0x834814c3156e9084d4f0d95acc818906c18be5144f43cb697963e583610eec3d. Chain 2 (Bitcoin): anchored in block 954618 (2026-06-20T23:05:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/c899ec99-7aff-4e59-a57c-abb89d48b98b.json and https://artists.proofprofile.net/proofs/artist/c899ec99-7aff-4e59-a57c-abb89d48b98b.ots, the client at https://opentimestamps.org runs `ots verify -f record.json proof.ots`.
El Dolar del Chivero (Corrido Cinemático)
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 0xeb1d8d2d9eb1b54ab0cb8f283905b9351b2361ae4ceeca51f8a511b34254091d. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T20:32:27Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZWFG2583693 — a six-check JSON result.
El Masacre de Blackwater (Corrido de RDR 2)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x244307652111873e9df0c277511e091c749627d85c5b86114c39f673d311a4f9. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZWFG2583696 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ff8dbac6304d420c27f2a26e5df5f61216bb510a8a9b42b8c236a04854f574b. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZWFG2583699 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f4add835762f2dfb1c830f8392bd97c4106a1356588dbcacab11c2700bbb39e. Chain 2 (Bitcoin): anchored in block 958251 (2026-07-16T06:29:25Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZTBD2525829 — a six-check JSON result.
Belatrix: Tiradera Session (Corrido TikTok)
El Corrido de los 3 Hermanos (Corrido Mágico)
Cumbia De Los Rangers (Version: En VIVO)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ce887b4f648aca1a59765554978a15aa59fb638c6a4051511d82aff64b3d02f. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZWFS2594943 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc753d0cc40459ed8648e8be3b327cff58fd9c2ff906feba5a936355ed54a0e79. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZWFW2502117 — a six-check JSON result.
El Zapateado de Hermione (Corrido Mágico)
De Hogwarts Hasta Culiacan (Corrido Mágico)
Dolores: La Orden Suprema (Corrido Mágico)
Mi Querido Hermano Fred (Corrido Mágico)
La Realidad En Mi Vencidad (Corrido TikTok)
El Plateado y El Unicornio (Corrido Mágico)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5dbf2bfaf3bec3631f5977b0aab7b37374b31044f3c1cb77f5b4f0778ded60e3. Chain 2 (Bitcoin): anchored in block 958476 (2026-07-18T01:26:56Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QT3FH2541380 — a six-check JSON result.
Tenía Que Ser De Gryffindor (Corrido Mágico)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x162f38515d3a2930ce766957bd638759365dbd73a7607f699941e9d16f13e38b. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QT6EF2574050 — a six-check JSON result.