Dormant 4,000 BTC Miner Wallet Awakens Amid Potential Quantum Attack Fears

Data from Lookonchain shows an early bitcoin BTC$111,390.85 miner wallet holding 4,000 BTC (around $442 million) has become active for the first time in 14 years.
The wallet, identified as 18eY9o, transferred 150 BTC (roughly $16.6 million) after years of dormancy.

These coins were originally mined in 2009 and consolidated into the wallet in 2011. The movement may signal a rotation, potential selling, or simply a testing activity.
A major narrative this year has centered on sell pressure from early “OG” holders, who have started moving or selling their bitcoin after it reached the symbolic $100,000 milestone.

Onchain data shows significant realized profits, suggesting old holders are taking advantage of high prices. Earlier in the year, about 80,000 BTC linked to an early whale, inactive since 2011, sold the entire stash, using Galaxy Digital as the broker.

Some analysts also point to rising concerns over quantum computing and its potential threat to early bitcoin addresses, which could explain the movement of older coins.

Bitcoin OG and Fragrant Board Director Nicholas Gregory told CoinDesk about the potential threat of quantum attacks.

“It’s true that OG holders have been selling; however, coins from this era (2011) may be vulnerable to potential quantum attacks if their public keys have been exposed (as is the case with early P2PK addresses or reused P2PKH addresses),” he Gregory said.

“This could be a preemptive move to transfer coins to new, unexposed addresses that would be better sheltered from such quantum hacks”.