START_PAUSED=true pauses the lottery as the operator before the scheduler exists. On the first Electrum session the 20 derivation indexes past the highest assigned one are looked up on every server; if any has history, registration stays closed (503 registration_unavailable) and restore_gap_detected is written, so a restored database cannot hand a lost user's address to a new one. Co-Authored-By: Claude Sonnet 5.5 <noreply@anthropic.com>