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A claim's replication_status field is computed by the server from the accumulated annotation graph plus a per-discipline quorum (1 for formal verification, 2 for algorithms/crypto, 3 for ML and experimental sciences, 5 for behavioural/social), not read from the author-submitted CIR. A retraction annotation supersedes all other evidence; a contradiction with weight matching or exceeding supporting replications flips the status to contradicted; meeting the quorum of independent replications elevates it to replicated. Authors cannot self-certify replication.