Agüero () is a Spanish surname, it may refer to: People Andrés Rivero Agüero (1905–1997), Cuban politician Caridad Agüero (born 1938), Cuban discus thrower Carolina Agüero (born 1975), Argentine b
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 0xb1e9ce244a2cb60f5e6f3b611da83f082c4c31e954c08c02f935b4514f1e455f. Chain 2 (Bitcoin): anchored in block 954784 (2026-06-22T02:53:59Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/e6a03354-8d03-4d56-ad2c-2383ff49452b.json and https://artists.proofprofile.net/proofs/artist/e6a03354-8d03-4d56-ad2c-2383ff49452b.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).