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 0x57509d980622f0ba2b27fcba2179e70574b6fcdd54af3969eee8bbb1727c852a. Chain 2 (Bitcoin): anchored in block 953630 (2026-06-14T12:06:27Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/309953da-69c0-4867-b917-048e5af8b039.json and https://artists.proofprofile.net/proofs/artist/309953da-69c0-4867-b917-048e5af8b039.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Exótico Pa'l Mundo (feat. Leysong, Buay Press & Luis Eduardo Acústico)
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 0x2e8467fe4cdbe55171240d80c31f36209cd8707bfc39bf42ad1efb9ad71f8a9c. 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/QZDYA1800125.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd22a8349280ed0c286d78d70764181e9aabd33f6a24ee0fcbccb00ec3342a5f2. Chain 2 (Bitcoin): anchored in block 960199 (2026-07-30T02:30:29Z), 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/QZDYA1800134.
El Abogado (feat. Leysong, Buay Press & Dela King)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb125f9d1ad72cae04c688084297395c14b12b42fdfa0ca5404356dd22516f27f. 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/QZDYA1800263.
Brinquen (feat. Leysong, Buay Press, Lil Ark & Dj Zaa)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f5ef7c52ba5059daf9438b8d62d3739b002bb3a66f2ab4d21155ce61ff5956c. 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/QZDYA1800289.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x534e22f5454d3e36122ffc3bb47c7a4f0ad94e48269580f9716b767c26efaa6d. 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/QZDYA1800247.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb125f9d1ad72cae04c688084297395c14b12b42fdfa0ca5404356dd22516f27f. 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/QZDYA1800263.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x534e22f5454d3e36122ffc3bb47c7a4f0ad94e48269580f9716b767c26efaa6d. 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/QZDYA1800247.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd22a8349280ed0c286d78d70764181e9aabd33f6a24ee0fcbccb00ec3342a5f2. Chain 2 (Bitcoin): anchored in block 960095 (2026-07-29T11:07:37Z), 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/QZDYA1800134.