Info signal

COINBASE Opcode

The contract reads the block miner/validator address, an uncommon and sometimes evasive pattern.

Analyzer: Bytecode Patterns
Slug: opcode_coinbase

What it means

COINBASE exposes the current block's fee recipient. Genuine token logic almost never needs it; it occasionally appears in MEV-aware or anti-simulation code that branches on the validator.

Why it matters

A standalone low-severity tell, but block.coinbase reads are part of the anti-simulation toolkit. RektRadar tracks it so it can feed the simulation-detection composite.

How RektRadar detects it

RektRadar flags the COINBASE opcode when present in the runtime bytecode.

From our dataset

3,809
tokens carried this flag
3,717
of them classified scam
97.6%
of tokens with this flag end up classified scam
87
flagged in the last 30 days

Top brand-jacked tickers carrying this flag: $UNI-V2, $SLP, $USDT, $77BIT, $USDC

Pool version of the flagged tokens that trade: V2 257 · V4 205 · V3 177

Snapshot from RektRadar's token_analysis database as of 2026-06-20.

Recent tokens with this signal

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