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 0x98e8a793046ee52e36bd2c6031d9456fb63ec240f3ffee39bd2c778f63d0621a. Chain 2 (Bitcoin): anchored in block 953697 (2026-06-14T21:49:28Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/709dc47f-c396-4196-aa7d-dc1a3ea57b3b.json and https://artists.proofprofile.net/proofs/artist/709dc47f-c396-4196-aa7d-dc1a3ea57b3b.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 0x05056e3db2e02cc1d872405d49140ebe5a878be0e23d721d5287b5a38741ec2a. 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/MXD781901409.
Neoperreo Bailoteo - Prod. DJ Blass & Mista Greenz & El Licenciado
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42474d54744cef0702c8d86d49cc51d263fd678a99b70b545b2f4ce4fe8841f2. 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/US66W1900221.
Ella Quiere Culiar (feat. DJ Sustancia & TECH GRL) - Prod. Deltatron & El Licenciado
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc940b8ae760a778b61beb4ac488881b86f2f5513f3c7855a4ade6cb9e872cda2. 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/US66W1900222.
Perrea Conmigo (feat. DJ Blass & Maicol Superstar) - Prod. DJ Blass & DJ Urba & El Licenciado
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ce3d0137cf75199a03567a39f487a1eacc8ea942fc989670d529f20fa507a1d. 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/US66W1900223.
Los Dueños del Neoperreo (feat. Ceaese & Galanjah & Fabien & DJ Sustancia) - Prod. Nass G & El Licenciado
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9093dcbcc5e85113fe54bbcbd2a32e417905cbf152548c069a3469a7619238e. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/US66W1900131.
Braty Puti (feat. Eli Fantasy) - Prod. DJ Blass & Mista Greenz
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73eda62979b585496688f04a5a7284d92e9dfc795a8b2e16d6d9698944631f17. 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/US66W1900071.
Dinamita (feat. Ceaese) - Prod. El Licenciado & BrunOG
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59a0970c03f2c13bd70b32d2baf525b8a2e3626a80583110c4e1ab026bcedcd7. 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/US66W1900224.
Y Nos Vamos (feat. DJ Sustancia) - Prod. Deltatron & El Licenciado
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a7478231d8bd10b287ea20966970df297c3e064e7cbcf95eb62e521c35a52a9. 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/US66W1900225.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7aa4d25bb1660e317848355eb491fae282d73c4e54d8c77c420c27644e030876. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/QZFZ42033429.
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