Lacerda is a Portuguese language surname branched from the castilan House of la Cerda. Notable persons with that name include: Alberto de Lacerda (1928–2007), Portuguese poet and radio presenter Carl
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 0xdd69d40b17d47645f31fbe3f971f5a01f0cbc89bf01517493410280738f8e6f2. Chain 2 (Bitcoin): anchored in block 953791 (2026-06-15T13:40:30Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/dfa7e562-1726-403d-8272-ecfbf619b153.json and https://artists.proofprofile.net/proofs/artist/dfa7e562-1726-403d-8272-ecfbf619b153.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).