The Polylog Crypto Intelligence Brief

Morning Edition · Monday, August 3, 2026

Crypto

Coldcard Wallet Flaw From 2021 Lets Attacker Drain $89 Million in Bitcoin Without Touching a Device

Galaxy Research traces the theft to seeds built from predictable software randomness, and the roughly 1,367 stolen bitcoin remain unspent across the attacker's addresses.

3 sources
Corroborated

Crypto

Aztec Ships Client-Side Proving on Ethereum, Putting Private Smart Contracts on Users' Own Devices

The Alpha V5 network generates zero-knowledge proofs locally, cuts private-transfer fees below five cents, and pushes confidential execution as a mainstream requirement rather than a niche.

2 sources

Crypto

Crypto Market-Structure Bill Vanishes From Senate's Monday Schedule as Recess Nears

The CLARITY Act is absent from the floor plan, leaving leaders until roughly Wednesday to file for a possible Friday procedural vote before a summer break that runs to mid-September.

3 sources
Corroborated

Crypto

Strategy Holds Its 12% Preferred Dividend Below Par, Breaking From Its Own Playbook

The STRC security closed at $89.46 against a $100 face value, and rather than raise the rate to support the price, Michael Saylor's firm relied on buybacks and a $3.75 billion cash reserve.

2 sources

Crypto

Access-Control and Timing Bugs Drive a Fresh Round of On-Chain Exploits

A DeFiHackLabs proof-of-concept shows an unprotected arbitrary-call forwarder drained on Base, alongside a time-of-check-to-time-of-use flaw in Index Coop's issuance contract.

3 sources

Macro

United States and Japan Confirm First Joint Yen Intervention in 15 Years

Treasury Secretary Scott Bessent said the United States 'will not hesitate' to repeat the coordinated yen-buying, and that it drew on a Federal Reserve lending facility to do so.

2 sources
Corroborated

Crypto

Crypto-Treasury Experiments Unravel at Small Public Companies as Marks Collapse

ZeroStack's crypto holdings fell from $163 million to $15 million, Interactive Strength wrote off a $50 million token bet, and a real-estate firm's $8 million balance may be locked.

3 sources

Crypto

Miden Frames On-Chain Privacy as a Practical Requirement, Not an Ideological One

The privacy team argues confidentiality has to become a default feature for institutions to transact on public chains, and details a 'Guardian' recovery model to make it usable.

2 sources

Markets

Crypto Exchanges Turn Perpetual Futures Into 24/7 Exposure to Stocks and Commodities

The instrument built to trade digital assets around the clock is now a 'reverse bridge' that brings equities and indexes onto crypto infrastructure without using a traditional broker.

2 sources

Crypto

BitGo Chief Stakes 100 Bitcoin That an AI Model Cannot Break Its Wallet

Mike Belshe challenged Anthropic's Claude to move 100 BTC after three real-world test breaches, and says the wallet went untouched.

1 source

Crypto

A 12-Address Cluster Shows How Proprietary Routing Skews Solana Trading Outcomes

CryptoSlate finds a small group of bots winning trades 62% of the time versus 21% for others by routing through one protocol, evidence that on-chain advantage is now a microstructure design.

1 source

Crypto

Ten Undisclosed Investors Move to Seize a Nasdaq Company With 2,380 Bitcoin

The signed agreement targets closing within 12 business days and would replace leadership, but leaves a required capital increase and approvals unresolved.

1 source