Method changelog

The head-to-head guard protocol is now A2-guard-vs-incumbent, with arms rout_guard and incumbent_guard; Block-0's control arm is partner_path. Wording only: no parameter, metric or rule changed.

rbench.index writes the index the site reads. No method change; no figures exist yet.

A sender's docs say durable nonce can hurt landing on some paths, so nonce vs blockhash became the primary comparison. The reference-RPC comparisons are secondary.

external_flow judges net flow at one slot; a typical launch guard sums gross buys. A1 now pre-registers a slot ladder and a provider-aggregated gross window, and counts the ≥1-slot structural delay against Rout.

Arms are recomputed from sha256(run_id:seq); probes exist only at hash-scheduled slots; anchors are re-fetched from chain; cluster-bootstrap intervals beside Newcombe; finalized commitment by default.

Create-slot buyers on a bundled launch are usually the creator's own bundle, so STEP0 publishes the result with that cohort counted as external and as insider.