US lawmakers introduced a bipartisan ARMA bill on Thursday to formalize a Strategic Bitcoin Reserve and a separate digital asset stockpile under the US Treasury. The proposal would aim to acquire up to 1 million Bitcoin over five years via budget-neutral strategies and would require BTC to be held for at least 20 years unless sold to reduce the national debt, which topped $39 trillion on Wednesday.

SpaceX disclosed in an S-1 registration statement that it held 18,712 Bitcoin valued at $1.45 billion as of Dec. 31, 2025. The filing, submitted on June 12, also states the company bought BTC at an average price of $35,320 per coin, a total that exceeds prior outside estimates by more than 10,000 coins.

Renegade.fi said a whitehat hacker returned about $190,000 after exploiting its Arbitrum-based V1 decentralized dark pool. The protocol said Blockaid flagged a $209,000 exploit at 8:27 am UTC and that 27 ERC-20 tokens were taken before most funds were sent back within 45 minutes, including $84,370 in USDC, $27,885 in wrapped Bitcoin and $23,950 in wrapped Ether.

Bitcoin (BTC) swung sharply on Sunday, briefly sliding from $81,430 to $80,520 before rebounding nearly 2.3% to $82,347. The move followed US President Donald Trump's Truth Social post rejecting Iran's counterproposal to a peace deal. The price surge coincided with about $64 million in short liquidations over the last four hours.

Chaos Labs has ended its three-year role as Aave's primary risk service provider, saying Aave's planned move to Aave V4 created added operational and legal exposure it would not take on. Chaos Labs founder Omer Goldberg said Aave Labs supported raising the engagement to $5 million, but the parties diverged on how risk management should work. Aave Labs CEO Stani Kulechov said the split was not hostile and claimed Chaos sought to become the sole risk provider and replace Chainlink oracles.

Circle has published a post-quantum security roadmap for its layer-1 blockchain Arc, detailing a phased rollout that begins with opt-in quantum-resistant wallets and signatures at mainnet launch, which the company expects sometime in 2026. The plan later extends to validator-level protections and offchain infrastructure, alongside a privacy-focused quantum solution introduced after mainnet. Arc is already running on a public testnet and is positioned around enterprise use cases involving USDC.

Rwanda's central bank warned on Sunday that crypto payments and FRW conversions are not permitted under the current framework, after Bybit added the Rwandan franc to its P2P trading options on Friday. The bank said FRW is the country's only legal tender and told the public to avoid crypto due to financial risks and limited recourse for losses.

The International Monetary Fund said tokenization could reduce frictions and improve transparency in finance, while warning its overall impact on financial stability remains uncertain. The report said faster automation may intensify stress events and, in emerging markets, tokenization could aid cross-border payments and inclusion but may also amplify volatility and weaken monetary sovereignty.

Google, Microsoft and Amazon Web Services are among the founding members of the newly launched x402 Foundation, created under the Linux Foundation to govern and standardize the x402 protocol for agentic AI payments across crypto and fiat rails. Coinbase said the protocol will not be controlled by any single company, positioning the Linux Foundation as a neutral, nonprofit home for x402.