500 BTC After 13 Years of Silence: This Was a Relocation, Not a Sale
By EIDEX Team
The address 18TExP, dormant since 2013, has sent 500 coins worth roughly $31.3 million. Lookonchain analysts spotted the movement.
What the Chain Shows
The address received its 500 BTC nearly thirteen years ago, when they were worth $509,800 — about $1,020 per coin, which places the deposit in late 2013, at the peak of that cycle. A year later a dust payment of 0.0005 BTC arrived from a CoinJoin address, someone else's experiment. After that the wallet was never touched again.
The Owner's Return
The final result is 6,160%, or better than 37% a year in dollar terms. No central bank and no conservative financial instrument delivered anything close over the same period. The price of bitcoin is almost beside the point here: the coins most likely came from people mining in an era when a home graphics card was still competitive hardware.
Why This Isn't a Cash-Out
The detail the retellings keep dropping: the recipient is a fresh bc1q address, not an exchange deposit. This is a change in how the coins are stored, not a sale.
Had a block that size gone to exchanges, any BTC trading pair would have registered it immediately. Nothing of the sort happened — no venue reported an inflow.
A Wave, Not an Isolated Case
According to CryptoQuant, roughly 935 BTC that had sat still for a decade or more moved on 3 August alone — the largest single-day volume since 20 March. On 31 July, about 6,388 BTC shifted out of addresses dormant for five to seven years. The count of waking addresses has climbed sharply within days. That kind of synchronisation is unusual: old addresses normally stir one at a time.
The Cause: The Ongoing Coldcard Attack
Both Lookonchain and CryptoQuant tie the surge to the vulnerability in Coldcard hardware wallets, which held the savings of a substantial layer of early adopters. Losses had passed $100 million by 4 August: Galaxy Research counts roughly 7,300 affected addresses and 1,596 BTC stolen, with the final figure potentially reaching 2,055 BTC.
The calculation facing a holder with a thirteen-year horizon is not complicated — transfer costs are trivial against the risk of losing the position outright.
The first wave hit on 30 July: 594.5 BTC, some $38 million, from 500 addresses. A fourth is now under way. On 3 August, 388.9 BTC left 462 addresses over about two and a half hours, with the sweep running 45 times faster than normal levels.
What It Means
Long-term holders are migrating to new keys, and addresses dating close to the earliest years after Satoshi Nakamoto are moving for reasons of security rather than market timing.
The practical takeaway is straightforward: a spike in dormant-wallet activity right now is not a sell signal — none of these coins are leaving the market. Transaction fees climb during periods like this, so a migration is better planned in advance than executed at peak. And confirm that you control the destination address before the transfer, not after.
For the market this is arguably good news: the volume is moving into cold storage rather than into order books. A mass movement of old coins looks alarming right up until you check where it is actually going.
What happened to address 18TExP?
Dormant since 2013, it sent 500 BTC worth roughly $31.3 million. The recipient is a fresh bc1q address rather than an exchange deposit, so the coins changed storage, not owner.
Was this a sale?
No. The coins went to a new self-custody address, not to a trading venue. Had a block that size reached exchanges, BTC pairs would have registered it immediately — no venue reported an inflow.
Why are so many old wallets waking up at once?
Lookonchain and CryptoQuant tie the surge to the vulnerability in Coldcard hardware wallets. Losses had passed $100 million by 4 August, with roughly 7,300 affected addresses and 1,596 BTC stolen by Galaxy Research's count.
How much did the holder make?
6,160%, or better than 37% a year in dollar terms. The coins were acquired at about $1,020 each in late 2013, at the peak of that cycle.
Does this mean a sell-off is coming?
No. The volume is moving into cold storage rather than into order books, so none of these coins are leaving the market. Transaction fees do climb during periods like this, which is why a migration is better planned in advance than executed at peak.
Crypto mining is the process of validating transactions and adding them to the blockchain by solving complex mathematical puzzles using specialized hardware — and earning cryptocurrency rewards in return.
Liquidity measures how easily a cryptocurrency can be bought or sold without significantly affecting its price.
CTO of the EIDEX crypto exchange. Responsible for platform architecture, the trading engine and security; writes about the crypto market, regulation and blockchain technology.
