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 0x38d5cdb874723a2a08abab32e0bbc114a217294d840b9b72425f34cb414ac8e1. Chain 2 (Bitcoin): anchored in block 953625 (2026-06-14T11:37:06Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/28d26b12-bc8d-469f-8276-df5e89cba62e.json and https://artists.proofprofile.net/proofs/artist/28d26b12-bc8d-469f-8276-df5e89cba62e.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 0x5692fb2638bdf2218117cc6cf0d54ede0c8b6392abfb437fe5ff3d0fbed55339. Chain 2 (Bitcoin): anchored in block 956402 (2026-07-17T03:27:44Z), 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/ES5107800105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd94d4d22cc9e0087144f22d59ce8988e988f5569548d7bf202221ea52a4444d. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T23:03:56Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ES5107800106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2feda17b470813d681bd277060970d317a24102aa21707bee9ad6f0ba12f82a1. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/ES5107800107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4fb45b505540aa17be29f789d50811e81710f79ff56d672d4c87412167a573c. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/ES5107800108.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x686ab2a13c7317b252b36ae882520210561a5cf092ba6c14aed774e6befff076. Chain 2 (Bitcoin): anchored in block 958484 (2026-07-18T03:34:53Z), 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/ES5107800109.
Borracho No Se Puede Conducir por la Ciudad (Peligrosos Sociales)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x129c4a108faf32f20dc3e14da3b48cf1b010149e2eeb0876580d821b492d5807. Chain 2 (Bitcoin): anchored in block 958771 (2026-07-19T21:05:58Z), 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/ES5107800110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0de04a006190e21213d439e652a62fd026e058d8c7aacc7168898b3e0cf4bc9. Chain 2 (Bitcoin): anchored in block 958802 (2026-07-20T01:04:02Z), 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/ES5107800111.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23436848820a384d26b387e136c0463b1a99fd1d16b82fb9e87c1960518d6c27. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/ES5107800112.