{"engine":"EVA — Evaluating Valiant Algorithms","generated":"2026-09-03T16:10:06.260413+00:00","dimensions":[{"key":"validity","name":"Validity","evaluates":"Is the decision well-formed, in-policy and within the model's declared scope?","floor":0.6},{"key":"confidence","name":"Confidence","evaluates":"Calibrated certainty of the model's output (raw confidence, adjusted for context).","floor":0.6},{"key":"risk","name":"Risk","evaluates":"Severity tier of the use-case and potential harm.","floor":null,"note":"higher risk tightens every other floor"},{"key":"compliance","name":"Compliance","evaluates":"Conformance to POPIA / FICA / FSCA and the applicable sector frameworks.","floor":0.6},{"key":"stability","name":"Stability","evaluates":"Bias and drift — Statistical Parity Difference (SPD) across privileged/unprivileged groups.","floor":null,"note":"SPD must stay within tolerance"},{"key":"impact","name":"Impact","evaluates":"Scope and reversibility of the decision's effect on people and institutions.","floor":0.6}],"sovereignty":{"name":"Sovereignty Verification Score (SVS)","gates":"Every decision must clear the sovereignty floor or it is BLOCKED regardless of the EVA scores.","inputs":["ECS (egress control)","BGP path","traceroute","DNSSEC","data-storage locality"],"floor":0.6},"decision":{"outcomes":["APPROVE","BLOCK"],"sealing":"HMAC-sealed verdict, hash-chained into the Merkle audit ledger, with the root HSM-signed."},"risk_tiers":["MINIMAL","NOTABLE","MEDIUM","HIGH","UNACCEPTABLE"]}