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Block Execution

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Block execution widget — dependent transactions, gas in reverted calls and the most contended slot

What it shows

What happened inside the execution of the latest computed block, and the same two series across the recent blocks:

  • Dependent transactions — transactions that read a storage slot an earlier transaction of the same block had written, out of all the block's transactions. Their outcome depended on the order of the block.
  • Gas in reverted calls — gas spent inside calls that reverted, and in how many transactions. A transaction can succeed with a reverted call inside it, so this is not the gas of failed transactions.
  • Most contended slot — the contract and storage slot of the block that the most later transactions read after an earlier one wrote it.

Under each number, a bar per block shows the series over the window; hover a bar to read that block. The line under the bars names the block range and how many of its blocks are computed.

How to read it

  • Dependency is order sensitivity. A block where a large share of transactions depend on earlier ones is a block where reordering would have changed results — typical around busy DEX pools and token contracts. The most contended slot usually belongs to WETH, a stablecoin or a popular pool.
  • Reverted gas is hidden waste. Routers and bots often try a path, revert it inside the call, and carry on; that gas is paid even though the transaction succeeds.
  • Not computed is not zero. The analysis takes a moment after a block arrives. A block that is not computed yet is an empty column, and the title says how many newer blocks are still being computed.

The block number in the title opens the block in the Explorer, where the block's transaction dependencies can be read in full.

Data & update cadence

Shows the latest computed block and the recent blocks around it; refreshes with every block (~12 s).

Last updated 22 Oct 2026, 08:06 UTC · verified against TraceFast v1.0.261 · Markdown