Circuits that run forever, one tick per block

Start a machine from any of your dies. It keeps ticking on BNB Chain with nobody running it, and anyone can check its state at any block.

~0.3 / sticks: one per BNB Chain block

Foreverit can't be paused, changed or removed

Checkableanyone can compute its state at any block

Free to watchreading it costs nothing; starting it costs a network fee

Reading the chain…

0#1001#1012#1023#1034now

It ticks once per block, about 0.3 times a second and 29,000 times a day.
Nobody runs it and nobody can stop it. Its state at any block is worked out from the rules, so anyone can check it.
Good for: counters, clocks, blinkers, traffic lights, a tiny CPU stepping through a program in ROM.
Staying in sync: the chain replays up to 4,096 blocks (about 3 h) from a machine's last checkpoint. Wafer's keeper posts checkpoints; anyone can.