Coinkite has confirmed a seed-generation flaw affecting parts of the Coldcard hardware-wallet line, after on-chain analysts tracked the theft of 594.48 BTC in a burst of transactions completed within roughly 25 minutes. The incident involved 1,324 UTXOs swept through 500 transactions across a three-block window, with the funds taken from about 500 single-signature addresses. Security researchers said the issue traces back to firmware changes introduced in March 2021 that accidentally disabled the secure chip’s hardware random-number generator, leaving key generation to rely on predictable inputs such as a chip serial number and clock registers. Coinkite first focused its warning on the Mk3, then later expanded the affected scope to include older firmware on the Mk4, Mk5 and Q. The company said users should not wait for a firmware update and should move funds by creating a new seed on an unaffected device, verifying backups, testing with a small transaction and then transferring the full balance. Devices including TAPSIGNER, OPENDIME and SATSCARD were said to be outside the affected codebase.

Securitize Capital, a subsidiary of tokenization infrastructure firm Securitize, has completed its registration with the U.S. Securities and Exchange Commission as an investment adviser, according to CoinDesk. The registration adds to a list of regulatory permissions already held across the Securitize group, including broker-dealer, alternative trading system, transfer agent and fund administration licenses. Securitize said the new approval gives it a broader base to serve asset managers and institutional investors that are exploring on-chain investment strategies. The company already works with major asset managers including BlackRock, Apollo, KKR and VanEck. It is also the issuer behind BlackRock’s tokenized money market fund BUIDL and is working with the New York Stock Exchange on infrastructure for trading tokenized securities. The move expands Securitize’s compliance framework as it continues building out institutional tokenization services.

A growing list of public companies that once embraced the bitcoin treasury model are now selling BTC, paying down debt and reworking their balance-sheet strategies after sharp declines in both bitcoin and their own share prices. CoinDesk reports that Strategy, Satsuma Technology, Smarter Web Company, Sequans Communications, Nakamoto and Empery Digital have all sold bitcoin for purposes ranging from debt repayment and operating needs to stock buybacks and cash preservation. Crypto miners including MARA Holdings and Bitdeer are also reducing holdings, using proceeds to repay or repurchase debt while shifting energy and computing capacity toward AI data centers. The pressure extends beyond asset sales. Leadership turnover at Twenty One Capital and the collapse of Bitcoin Standard Treasury Company’s proposed merger point to broader strain across the digital-asset treasury sector. Even so, Strategy remains the largest public bitcoin holder with more than 840,000 BTC, and CEO Michael Sayler said limited sales would not amount to a broad exit plan.

A bipartisan group of U.S. lawmakers has introduced the Countering Adversarial Threats and Security Risks Act, or CATS Act, aimed at helping American AI labs and security teams respond to foreign attempts to extract advanced model capabilities at low cost. According to a news release from Senator Adam Schiff’s office, the bill would create a statutory antitrust exemption so non-federal entities can share threat intelligence in good faith when addressing covered AI security risks. It would also permit companies, with prior written notice and solely for risk-reduction purposes, to coordinate delays or limits on the deployment of high-risk AI models. The proposal specifically targets so-called AI distillation attacks, described as systematic efforts by foreign labs to issue millions of queries to leading U.S. models, harvest data, and train advanced systems more cheaply. The bill names coordination channels including the National Security Agency’s AI Security Center, the National Institute of Standards and Technology’s CAISI, and the Frontier Model Forum. It also includes safeguards allowing the attorney general to seek injunctions against misuse of the exemption. Supporters cited in the report include Google, Andreessen Horowitz, the Center for AI Safety Action Fund, and the Software & Information Industry Association.

The SEC has proposed rescinding Rule 611 and Rule 610(e) of Regulation NMS. Galaxy Digital says the change could remove a core barrier to compliant onchain trading of tokenized stocks, especially for AMM-based venues.

tZERO partners with tokenization platform Nomyx to connect tokenized securities issuance to regulated secondary trading, providing issuers with full lifecycle infrastructure from creation to trading.

U.S. broker-dealer LeveL Markets partners with EDX Markets to integrate institutional trading infrastructure with digital asset clearing, aiming to lower barriers for banks and asset managers.

The SEC has included three crypto rule proposals in its 2026 regulatory agenda, covering asset exemptions, broker-dealer rules, and ATS regulations. The CLARITY Act awaits a Senate vote needing 60 votes.