
Bitcoin Volatility Hits a Ten-Week Low as ETF Money Returns
Bitcoin's 30-day implied volatility fell to 36%, its lowest since 31 May, while US spot ETFs took $211.49 million on a second straight day of inflows.
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Bitcoin's 30-day implied volatility fell to 36%, its lowest since 31 May, while US spot ETFs took $211.49 million on a second straight day of inflows.

Galaxy Research counted at least 15 independent attackers sweeping vulnerable Coldcard wallets, with 1,596 BTC confirmed stolen and a suspected total of 2,055 BTC.

Strategy sold 1,638 BTC for $104.73 million at an average of $63,957, leaving 842,138 BTC carried at an average cost of $75,419 and a dollar reserve of $4 billion.

Daily active addresses neared 980,000 on 31 July, the most since December 2024, while exchange balances rose, with coin heading toward venues rather than away.

Coinkite told Coldcard owners to keep their devices but abandon their seeds, and named five rival wallets, as a third sweep wave pushed the tally near $89 million.

Three outlets put Saturday's bitcoin price in three different places, from $63,082 to a rejection off $65,000, on the thinnest spot volume since 2019.

A 2021 build-config error left Coldcard firmware using a general-purpose pseudorandom generator instead of the chip's hardware RNG, cutting seed entropy far below 128 bits.

Bitcoin ended July at $64,131.17 after printing the cycle low at $57,735 on the first of the month, with ether outperforming and ETF flows barely positive.

A build error in Coldcard firmware from March 2021 cut key strength from 128 bits to about 40, and an attacker swept 594 BTC out of some 500 wallets in 25 minutes.

Strategy booked an $8.2 billion second-quarter loss on an unrealized markdown of its 843,775 BTC, now carried about $9 billion below what the company paid for it.

Bitcoin's second difficulty reset of July barely moved, a flat line after the 5% cut two weeks earlier and a sign that hashrate has stopped leaving the network.

Bitcoin held $65,674 inside a week-long $64,000–$66,800 range, futures open interest fell to 743K BTC, and WLFI led the movers with a 12.18% gain.