Today in crypto: Bitcoin Core developers warned users of a wallet migration bug that can delete files and result in fund losses, US crypto stocks soared amid a wider crypto market rally, and Gemini and Crypto.com contributed over $21 million to a political action committee supporting US President Donald Trump.
Bitcoin Core v30 bug risks fund loss during legacy wallet upgrades
Bitcoin Core developers warned users of a wallet migration bug in versions 30.0 and 30.1 that can delete files and result in fund loss.
The issue occurs under specific conditions and affects migrations from old Bitcoin Core wallets that were never renamed or upgraded.
Lacie Zhang, market analyst at Bitget Wallet, told Cointelegraph that the bug is triggered when the software attempts to migrate an unnamed legacy “wallet.dat” file stored in a custom wallet directory, often defined using “-walletdir” setting, while pruning is enabled.
In these cases, the migration can appear to complete successfully, but the cleanup logic mistakenly deletes the entire wallet directory, and if a user does not have an external backup, “loss of access to funds is effectively guaranteed because all local wallet files are removed.”
Shawn Odonaghue, community lead at layer-3 blockchain Orbs, told Cointelegraph that the bug primarily impacts “very old wallet setups,” and that users with a hardware wallet or modern wallet software are unlikely to experience such issues.
Bitcoin Core 30.1 was released on Jan. 1 and the wallet migration bug was publicly disclosed on Monday, with developers pulling the 30.0 and 30.1 binaries from the official download site.
The project told users not to use the wallet‑migration tools until a fixed release, Bitcoin Core 30.2, is available, stressing that existing users who are not attempting migrations can continue running their nodes as normal.
US crypto stocks soar as markets rally
Major public US crypto companies rallied with double-digit percentage gains on Monday amid a crypto market rally that saw major tokens hit multi-week highs.
Crypto infrastructure platform Bakkt (BKKT) led Monday’s gains with a nearly 31.5% rise, while Bitcoin (BTC) treasury company Kindly MD (NAKA) was among the top gainers with a 24% lift.
The Donald Jr. and Eric Trump-led crypto miner American Bitcoin (ABTC) led the sector and climbed 13.5% to over $2 for the first time in nearly a month, with its rivals Hut 8 (HUT), IREN (IREN) and Cipher Mining (CIFR) all posting gains of between 13.5% to 12%.
In the 24 hours to Monday, the total capitalization of the crypto market had risen by 1.3% to nearly $3.3 trillion, adding to its gains from just over $3 trillion at the start of 2026.
Bitcoin had gained 1.2% in the past day, cooling to $93,800 after hitting a 24-hour high of over $94,600, its highest price since early December, while Ether (ETH) hit a three-week high of over $3,200.
Crypto exchanges back Trump ahead of US primaries
Major cryptocurrency exchanges are re-emerging as significant financial backers of President Donald Trump ahead of the US primary season, underscoring the industry’s growing alignment with Republican leadership amid a shift toward more crypto-friendly policy positions.
The pro-Trump MAGA Inc. Super PAC has received $21 million in donations from two cryptocurrency exchanges, according to recent filings with the Federal Election Commission.
Those disclosures show that Gemini Trust Company contributed $1.5 million in USDC (USDC), while Foris Dax, the parent company of Crypto.com, made two separate $10 million contributions. Crypto.com has previously engaged with Trump-affiliated entities, including a recently announced partnership involving Trump Media and its treasury strategy.
The donations reflect the crypto industry’s continued willingness to support Trump-aligned political groups following the 2024 election cycle, when Republicans and Trump-linked committees received substantial backing from digital asset companies.
That financial support has coincided with tangible policy outcomes, including regulatory leadership changes at key federal agencies, the signing of stablecoin legislation, and ongoing congressional work on a broader crypto market structure bill.