rex — Reth Node Explorer

Use execution state-diff to trace a block and summarize which accounts changed during execution. The command uses the prestate tracer in diff mode, then aggregates account changes across all traced transactions.

Command

rex execution state-diff \
  --block latest

Limit the printed account table:

rex execution state-diff \
  --block latest \
  --limit 10

Example Output

EXECUTION STATE DIFF

Block:               latest
Trace method:        debug_traceBlockByNumber
Transactions traced: 4
Trace errors:        0
Accounts changed:    9
Balance changes:     3
Nonce changes:       1
Code changes:        0
Storage slots:       12

ADDRESS                                      TXS BALANCE NONCE CODE   STORAGE CREATED DELETED
0x5fbdb2315678afecb367f032d93f642f64180aa3    4 no      no    no          12 no      no
0xf39fd6e51aad88f6f4ce6ab8827279cfffb92266    1 yes     yes   no           0 no      no

How It Works

For block numbers and tags, the command calls:

debug_traceBlockByNumber

For block hashes, it calls:

debug_traceBlockByHash

Both use this tracer configuration:

{
    "tracer": "prestateTracer",
    "tracerConfig": {
        "diffMode": true
    }
}

Field Notes

TXS is the number of traced transactions that touched the account.
BALANCE, NONCE, and CODE indicate whether that field changed at least once.
STORAGE counts unique storage slots changed for the account across the traced block.
Debug tracing can be expensive on large blocks. Start with recent dev or small local blocks while learning the output.