A memecoin riffing on Coinbase Chief Executive Brian Armstrong has collapsed after he dropped the token's artwork as his X profile picture and switched to a CryptoPunk, the latest sign of how tightly Base's markets track the moves of the chain's most prominent backer.

The $BRIAN token, a community-created coin styled as "Coinbase Man" that trades on Base, has fallen roughly 86% over the past 24 hours to about a $1.5 million market value on its main liquidity pool, according to onchain data from DexScreener.

Traders exchanged about $13.2 million of the token across roughly 30 Uniswap pools in the same period, against about $561,000 in total liquidity, the data show. The main pool logged 14,944 buys and 11,455 sells over 24 hours. The token first began trading on July 14.

The episode lands as Base, the Coinbase-incubated Layer 2 and one of the largest Ethereum scaling networks by activity, is rethinking what it wants to be. Coinbase has steered the chain away from creator and content coins toward trading, payments and AI agents, and the Base App recently reshuffled its leadership. Yet a single profile-picture change from Armstrong still sent retail traders piling into an unaffiliated memecoin, then rushing the exits when he changed the image again — a dynamic that concentrates gains in early buyers and leaves latecomers holding losses.