Dormant Bitcoin Moves in First 10 Days of August Surpass July

Data from a blockchain parser tracked 2,209.05 BTC leaving long‑idle addresses in 85 spends between Aug. 1 and Aug. 10, 2026. The addresses involved have creation dates from 2010 through 2017.

The parser recorded an average of 220.91 BTC moved per day during the first 10 days of August. By comparison, July’s tracked activity totaled 1,264.16 BTC across 30 spends, or about 40.78 BTC per calendar day. August had tracked dormant movements every day in the period, while July included several quiet stretches.

Activity in August concentrated by address vintage. Addresses created in 2014 accounted for 35 spends totaling 854.42 BTC. Addresses created in 2013 contributed 711.11 BTC, including a single 500 BTC movement on Aug. 3. On Aug. 3, eight tracked spends moved a combined 897.14 BTC, equal to about 40.6% of the first 10 days’ volume and roughly 71% of July’s total.

Some August transfers appear clustered. Twenty‑one spends from 2016 addresses shifted 224.18 BTC, and 19 of those were identical 10 BTC outputs tied to addresses created within a four‑day span in October 2016. Removing two suspected clusters — a 33‑spend group tied to 2014 addresses and a 19‑spend October 2016 group — leaves 1,215.15 BTC across 33 other spends, or about 121.51 BTC per day for the period after those clusters are excluded.

Transaction structure differed between months. July’s tracked spends appeared across 28 distinct blocks with a single multi‑spend block. August included nine blocks that contained multiple tracked spends, and 32 of the 85 spends occurred inside those grouped blocks. Measured by blocks per spend, August’s tracked activity was about 8.7 times denser than July’s. A repeated numeric pattern appears in several outputs: eight amounts end with 547 satoshis, including a tiny transfer of 0.00000547 BTC.

The surge in dormant transfers followed a recent Coldcard hardware wallet exploit. The addresses that moved in August predate Coldcard’s launch and the vulnerable firmware version cited in the exploit; their creation dates range from 2010 to 2017. Based on those creation dates, the tracked movements are not the Coldcard wallets implicated in the exploit.

Bitcoin’s market price moved from roughly $62,200 to near $65,000 by Aug. 10, a change of about 3%–4% over the period. For now, the recorded data show a marked acceleration of dormant coin movements in early August compared with July.