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💵 Stablecoin Supply Drops $15B in Largest Fall Since Terra

The stablecoin market shed approximately $14.56 billion this summer — its largest contraction since the Terra collapse — as new federal rules eliminated interest payments on digital dollars, driving out yield-seeking capital.

Data from DeFiLlama shows the sector lost a further $2.767 billion over the past seven days, compounding the drawdown. The decline is being attributed directly to regulatory changes that stripped yield-bearing features from stablecoins, prompting yield-driven investors to exit positions.

Moves of this scale typically signal a structural shift in how capital flows through crypto markets, with stablecoins serving as a key liquidity layer across DeFi and trading infrastructure.

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🔐 Coldcard Exploit Pushes Small Holders Back to Exchanges

An $89 million exploit tied to a Coldcard vulnerability is prompting smaller Bitcoin holders to move funds back onto exchanges, according to blockchain analytics firms.

The behavior marks a reversal from the FTX collapse in late 2022, when exchange failures drove users toward self-custody. This time, a hardware wallet vulnerability is having the opposite effect.

The shift highlights how the nature of a security incident — exchange failure vs. self-custody exploit — directly shapes how retail holders respond to perceived risk.

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💵 Stablecoins Overtake Bitcoin in Brazil's $14.68B Crypto Market

Brazil's crypto market reached $14.68 billion in demand, with stablecoins surpassing Bitcoin as the dominant asset class — a notable shift in how Latin America's largest economy is engaging with digital assets.

Meanwhile, Argentina's banking groups are actively developing programmable stablecoins, signaling growing institutional interest in blockchain-based money infrastructure across the region.

The IMF has also called for a regulatory overhaul of Brazil's crypto framework, adding a policy dimension to the market's rapid expansion. Latin America is emerging as a key front in the global stablecoin adoption story.

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🔐 Coldcard Firmware Exploit Shakes Hardware Wallet Confidence

A newly disclosed firmware exploit affecting Coldcard hardware wallets has renewed scrutiny over the security of self-custody Bitcoin storage.

The vulnerability has been linked to concerns about firmware integrity, though specific technical details about the nature of the exploit, affected device versions, or confirmed losses were not provided in the available reporting.

For holders using hardware wallets, the incident is a reminder to verify firmware sources, check for official security advisories from the manufacturer, and avoid installing unverified updates.

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📈 Wall Street's Bitcoin ETFs Sit on $16.3B Unrealized Loss

US spot Bitcoin ETFs are collectively underwater, with Bloomberg Intelligence estimating the average net cost basis of ETF capital at $82,249 per coin — roughly 22% above current prices — translating to $16.33 billion in unrealized losses.

An August 14 deadline requires large investment managers to disclose their June 30 Bitcoin ETF holdings via regulatory filings. The disclosures will reveal which institutional players have reduced or exited positions since the market downturn began.

The filings represent the most transparent look yet at institutional behavior during this correction, making August 14 a closely watched date for gauging Wall Street's conviction in Bitcoin exposure.

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🔐 $70M in Bitcoin Drained Without Touching the Devices

Galaxy Research has detailed how attackers stole over 1,000 BTC — worth approximately $70 million — from nearly 1,200 cold wallets, without ever physically accessing the hardware.

The vulnerability was not in the devices themselves but in weak seed generation. Poor randomness during wallet setup allowed the attacker to recreate likely private keys entirely offline, then sweep funds from affected wallets. The search for additional vulnerable wallets is reportedly still ongoing.

Cold wallets are widely considered the gold standard for crypto security, but this case shows that a compromised seed generation process can nullify that protection entirely. Users relying on hardware wallets should verify that their seed phrases were generated with strong, verified randomness — and consider migrating funds if there is any doubt about the integrity of the original setup.

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