Maria Laura Devetach (born 5 October 1936) is an Argentinian writer for children. Life Devetach was born in Reconquista, Santa Fe in 1936 to a Slovenian father and an Argentine mother who was very sk
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 0xd9edd5c262c71bb6168f22c987cad6703e99c2166fb808fdf7540600b4fd096a. Chain 2 (Bitcoin): anchored in block 954115 (2026-06-17T15:44:10Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/78baec29-6725-4c1d-ae9e-9bcc0c9db000.json and https://artists.proofprofile.net/proofs/artist/78baec29-6725-4c1d-ae9e-9bcc0c9db000.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).