Changing TIBBIR’s trusted hook pointer does not upgrade an existing Uniswap v4 pool in place; the old hook’s tax-clearing callbacks can fail after the pointer changes.Source-level inference: replacing/zeroing the pointer makes old-hook allowSettle/allowTake calls fail NotHook, potentially interrupting old-pool swaps and liquidity callbacks. No live disruptive transaction was sent.TIBBIR UNIVERSE THIS IS TIBBIR How to get TIBBIR Ribbit in numbers Connected clues Account archive Bridge & contracts On-chain research Connections Community The story Reading room Network map Timeline Findings Source library Conversations People & companies Open questions Export & reuse