Gustavo Alonso is a Spanish/Swiss researcher in the areas of Computer Science and Electrical Engineering. He is a full professor at the Department of Computer ScienceDepartment of Computer Science, ET
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 0x1e7edafbd72212f0a00bac5e2dfd1968493a4b55889e50a2ee1cdeeebb0cd0e8. Chain 2 (Bitcoin): anchored in block 954500 (2026-06-20T04:47:29Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/9ca2c703-083e-4753-b9cd-47beeb8e557a.json and https://artists.proofprofile.net/proofs/artist/9ca2c703-083e-4753-b9cd-47beeb8e557a.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).