An attacker exploited a range-proof verification bug in Blockstream's Liquid Network to withdraw roughly 4,000 BTC (~$340M) from the network's federation wallet, halting the sidechain, then returned about 3,400 BTC after Blockstream patched the flaw — keeping roughly 598 BTC (~$47M) as a self-declared 'bounty' while communicating with Blockstream via on-chain OP_RETURN messages.
why it mattersIt's a rare case of an attacker unilaterally keeping a 'bounty' rather than negotiating one, and it exposes a real bug in infrastructure several exchanges settle through.
CoinDesk / TechCrunch
Unrealized gains held by short-term-holder whales — wallets under six months old — hit a record $9.07 billion on September 4 per CryptoQuant data, a cohort historically quick to sell into strength, while Binance's BTC reserves simultaneously climbed to their highest level since November 2024.
why it mattersLarge unrealized gains sitting on exchange-adjacent wallets are a classic setup for a sharp, profit-taking-driven pullback if price stalls.
Cointelegraph
US spot bitcoin ETFs have pulled in roughly $770M so far in September on top of a $3.52B August, yet remain down about $1 billion in net investor money for the year, underscoring how sharply flows reversed during the year's earlier drawdowns.
why it mattersEven a multi-week inflow streak hasn't been enough to erase the damage from earlier in the year, a reminder that ETF flow momentum and full-year returns can tell very different stories.
CoinDesk