Cross-chain state verification shouldn't be this complicated. One project's tackling this head-on by building a unified checkpoint where blockchains can actually verify each other's latest state.

Here's how it works: when a rollup publishes its block to the sequencing layer, other chains pull that data through the verification node. No more guesswork about whether the state you're reading is current. Everything syncs up automatically.

The best part? The sequencer loses its power to rewrite history once blocks are committed. That's the kind of finality we need.