{"algorithm":"Ed25519","canonicalization":"JSON con chiavi ordinate (sort_keys), separatori compatti (',' ':'), ensure_ascii","payload":{"verdict_id":402,"claim_id":415,"claim_text":"30 years ago this week a man carried four handguns into Dunblane Primary School and murdered a teacher and 16 children.","label":"vero","confidence":0.97,"explanation":"On 13 March 1996 Thomas Hamilton entered Dunblane Primary School with four handguns and killed 16 pupils and one teacher (Gwen Mayor) before killing himself. It remains the UK's deadliest mass shooting; PMQs on 11 March 2026 falls in the same week as the 30th anniversary.","sources":[{"url":"https://www.britannica.com/event/Dunblane-school-massacre","ente":"Encyclopaedia Britannica","titolo":"Dunblane school massacre","estratto":"13 March 1996: Thomas Hamilton killed 16 children and one teacher with four handguns."}],"issued_at":"2026-07-01T07:58:34+00:00"},"signature_b64":"KKRuajch8awOFpdAIzcbt2ednlIXvGperwTEBHhA8yWsTG1MnBNr+HJbHxTWRfp+xuCkKCIy66LLdPTdht3hCA==","public_key_hex":"1719e2638a2cc0ec8d552d71dca52197f934e0a66b17e6364f1eed7a1d428e01","note":"Verifica offline: ed25519_verify(public_key, base64decode(signature_b64), canonical_json(payload))."}