ERC-4337 · interactive mechanism simulation

Wallets sign UserOperations into an alt-mempool → bundlers pack them → the singleton EntryPoint validates each account (and optional paymaster) before executing → bundlers get paid back. Edit the parameters and watch the pipeline respond.
Wallets sign UserOps Alt-mempool ERC-7562 rules Bundler queued: 0/4 EntryPoint singleton · same address, all EVM chains handleOps() Smart Account validateUserOp() Paymaster sponsors gas (staked) Target contract execute(calldata) Reverted ops 0 griefed
UserOps submitted
0
Ops executed onchain
0
Sponsored by paymaster
0 (0%)
Reverted / griefed
0
Bundler revenue
0.000 ETH
Parameters — edit me
3.0/s
4
65%
42k
Controls

Illustrative simulation. Defaults mirror the researched ERC-4337 mechanism (singleton EntryPoint, alt-mempool with ERC-7562 validation rules, ~42k+ gas validation overhead, most ops paymaster-sponsored) but op sizes, timing, and bundler economics are simplified for visualization — not live onchain data. The griefing button illustrates why the alt-mempool restricts validation-phase code: without it, ops that pass simulation but revert on execution can waste bundler gas. Part of The Onchain Experiment Atlas.