@dcposch.eth not to nitpick, but your commit actually saves 68 bytes and not just 4 bytes - that's a very nice extra ~20% reduction in raw tx size from 342 from to 274!
Though due to them being mostly zeros, it translates into roughly an 8% reduction in calldata cost, but that's still considerable additional savings

Real World Ethereum 🌎 
building /daimo ✳️ 

yes! wrote here, just forgot to update the commit message. https://github.com/daimo-eth/bulk/pull/6#issuecomment-1877707327

all credit to @konrad

abstractooor @rhinestone • prev oxford and exited web2 founder

Security researcher and blockchain research lead at Fireblocks; built OpenOrdex, /spellcaster

yep this was my miscalculation - @dcposch.eth also pointed this out to me which makes this even better of an optimization