Dormant bitcoin wallets moving $31M after Coldcard scare
A bitcoin wallet dormant since 2013 moved 500 BTC worth about $31.3 million on Monday, and it is not alone. On-chain data show dormant bitcoin wallets moving in a cluster since the Coldcard hardware wallet exploit began on July 30, a pattern analysts read as security-driven migrations rather than sales.
Key Takeaways
- Wallet 18TExP, inactive since 2013, transferred all 500 BTC (~$31.3 million) to a new address.
- The move lands amid the Coldcard exploit that began July 30, with Galaxy estimating about $130 million in BTC drained.
- CryptoQuant data show spikes in coins dormant five to 10-plus years moving in the same window.
- A separate seven-month-dormant wallet shifted 16,400 BTC (~$1.04 billion) on August 3 in what analysts call a custody reshuffle.
What exactly happened with the 2013 bitcoin wallet?
The address labeled 18TExP emptied its entire 500 BTC balance in a transfer flagged by Whale Alert. According to CoinDesk, those coins last moved about 12.7 years ago, when the stash was worth roughly $500,000.
Blockchain explorer data cited by Bitcoin News place the original Pay-to-Public-Key-Hash address creation on Dec. 6, 2013, when bitcoin traded near $1,042—putting the 500 BTC stash at about $521,000 at the time. Arkham Intelligence data show the receiving address is not tagged as a known exchange, custodian, or other identifiable entity.
Why are dormant bitcoin wallets moving now?
Timing is the story. The reactivation sits inside an unfolding Coldcard security crisis that has rattled self-custody holders since July 30. Blockchain sleuth Lookonchain said on X that the owner may have moved the funds to a new wallet due to security concerns following the Coldcard hack.
Since July 30, attackers have drained thousands of BTC from Coldcard-generated wallets, exploiting a flaw dating back to March 2021. Researchers at Galaxy put total damage so far at about $130 million in BTC, CoinDesk reported. For more market and security coverage, see our Fintech & Crypto Alerts hub.
Is this an isolated whale move or a wider trend?
It is not isolated. CryptoQuant tracking of spent output age bands shows coins dormant 10 years or longer saw roughly 935 BTC move on Aug. 3—the largest single-day total since March 20. Coins dormant five to seven years saw a larger spike, with about 6,388 BTC moving on July 31.
Separately, The Cryptonomist reported that on August 3 a wallet idle for seven months transferred 16,400 BTC—about $1.04 billion—to a newly created unknown address. Analytics firm Cypher Citadel classified that unknown-to-unknown transfer as a custody reshuffle, not an exchange deposit tied to selling.
Old coins move for many reasons, from estate transfers to custodial migrations. But the clustering of large, long-dormant movements in the days after the Coldcard incident suggests holders are proactively migrating funds for security—not dumping into the market.