Holder sweep transactions spiked amid the Coldcard hack and the days after.
On July 31, 1.2K BTC were swept by holders, up from just 65 BTC the day before the hack.
Bitcoin transferred by swept transactions remained elevated until August 7, with a total of 2,575 BTC moved in this period.
A swept transaction is defined here as:
- Total address' BTC holdings are transferred in the transaction.
- The total holdings are transferred to 1 new address.
- Transfers < 1 BTC in this case.
The attackers' addresses are excluded in this analysis.
This chart is live in our Coldcard hack dashboard here:
Our research report: