Node operators — flag day 2026-09-06: testnet-11 schedules fences at DAA 1,900 (ADR-0062 DA court, ADR-0077 D16 private prompts, ADR-0090's model market) and DAA 2,150 (the refutation ladder). A node built before 2026-09-06 is already cut off — the fork-id gate refuses it now, not at the height, and the reject is sent by the OLD build, so nothing the fleet deploys can end it for you. Rebuild from main; startup should print params fingerprint 060e3597…. Keep your appdir — the genesis did not move — unless your own genesis line is not ad30b5cb…, which is a different chain and needs a wipe. Details: docs/testnet11-node-operator.md. ×