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Storage Heatmap

Storage Heatmap widget

What it shows

Contracts ranked by the number of storage writes — changes to persistent contract state — during the live window.

How to read it

Storage writes are the most expensive thing a contract does, and the most permanent: they're what actually grows Ethereum's state. Token balances updating puts USDT/USDC here perpetually. The outliers matter — XEN Crypto leading with 20k+ writes is a protocol whose design hammers state; a new contract appearing high on this list is either very popular or very wasteful. Compare with Top Contracts by Gas: heavy gas with light storage means compute; heavy storage means state growth.

Data & update cadence

Rolling window of 3 epochs (~19 minutes), refreshed every block (~12 s).