{"algorithm":"Ed25519","canonicalization":"JSON con chiavi ordinate (sort_keys), separatori compatti (',' ':'), ensure_ascii","payload":{"verdict_id":426,"claim_id":439,"claim_text":"The MenB vaccine has saved lives since its introduction in 2015 for infants.","label":"vero","confidence":0.95,"explanation":"The meningococcal B (MenB) vaccine, Bexsero, was introduced into the UK national infant immunisation programme from 1 September 2015, making the UK the first country to do so. Infants are offered doses at 2 and 4 months plus a booster at 12 months.","sources":[{"url":"https://www.gov.uk/government/publications/menb-vaccination-introduction-from-1-september-2015","ente":"GOV.UK / UKHSA","titolo":"MenB vaccination: introduction from September 2015","estratto":"MenB vaccine introduced into the routine infant immunisation programme from 1 September 2015."}],"issued_at":"2026-07-01T07:59:04+00:00"},"signature_b64":"Nxv038R3Q4/RMP7ks999GN9K2yZOB58N5ii6Qjm5PZg5htx3fA/FUua55DjxHl3JfC6F2VIhDxbZj3SO4BxoBg==","public_key_hex":"1719e2638a2cc0ec8d552d71dca52197f934e0a66b17e6364f1eed7a1d428e01","note":"Verifica offline: ed25519_verify(public_key, base64decode(signature_b64), canonical_json(payload))."}