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 0x8905bc0d7e94e7dfe53c050449ab34f5b9dc04e270f9cf51be17812f5f867126. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/ce0ac795-522e-4eb8-9d57-0c26546259e3.json and https://artists.proofprofile.net/proofs/artist/ce0ac795-522e-4eb8-9d57-0c26546259e3.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 0xd620570f7b13faee7385592e17a34f4ebbc58fb909a3d81c77943d2c6dba7848. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-17T03:03:14Z), 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/ESA092318248.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8b84bbb1a6132166c699d4ee1a0443aa07bb7b79f64d07704ada38ddd19d6d4. 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/ESA092318249.
Mix Charangazos - Anita la Voladora - la Brujita
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f671fda4e23915c55af685479960b65253b098386137069b8e1017cd65761ca. 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/ESA092318251.
Mix tierra caliente para bailar pegadito
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe501f3d3d0e8b10b7a7503745365f2efd022e70e0493f238207e9b66767da642. Chain 2 (Bitcoin): anchored in block 958504 (2026-07-18T05:41:32Z), 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/ESA092318252.
Mix Zacaditos - Vamos a bailar - Moviditas
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4277115047740de72761682f0ce9a2619b84453ea094ce57def4fc5a5d6de113. Chain 2 (Bitcoin): anchored in block 958169 (2026-07-15T17:53:49Z), 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/ESA092318253.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36be64c05cb8c09c8370bb4c2a7b8df952abda5f5c00c53937e8cd5c8b020704. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/ESA092318254.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53d737514763e8f4c964e1376f6444a9494930a2ab818654c52a5b35c0a2207f. Chain 2 (Bitcoin): anchored in block 958357 (2026-07-17T03:33:42Z), 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/ESA092318256.