Keystone said its investigation found that attackers who breached its website obtained the WebAuth device-authentication key used to verify that a hardware wallet is genuine, potentially allowing counterfeit devices to pass official authenticity checks. The company will destroy 18,835 unsold devices built with the old key, pause unshipped orders and move new production to a replacement key, while the incident affected 25,964 purchase records and 12,873 incomplete checkout records.

The compromised key undermines the authenticity check customers rely on to confirm a device is genuine, even though Keystone said seed phrases, private keys and transaction signing were not compromised. The exposed purchase data — names, contact details, shipping addresses and order details — creates phishing risk, and one customer had already reported a social-engineering call that used Keystone order information.

Keystone said the affected records were limited to purchases made through Shopify on its official site, and that its automated data-deletion tool "did not operate reliably," so some personal information was retained beyond the promised period; it also said another roughly 25,000 records had already been permanently erased under its retention policy.

Anthropic's public S-1 filing with the US Securities and Exchange Commission on Monday discloses that its data center buildout is increasingly reliant on natural gas, and states that "competition for access to electrical supply and data center locations with adequate power availability is intense." The filing also sets out plans to list on the Nasdaq under the ticker ANT.

The filing makes AI's energy supply and climate exposure an explicit risk factor for public-market investors ahead of a frontier lab's listing, rather than a background concern raised by outside critics.

The quoted language appears as a risk disclosure rather than a committed procurement plan. Coverage of the same filing noted that roughly one-fifth of Anthropic's revenue came from two customers.

Brazil’s equity market lost more than $200 billion in value at Monday’s open after President Luiz Inácio Lula da Silva defeated Senator Flávio Bolsonaro in Sunday’s runoff, 51.79% to 48.21%. The iShares MSCI Brazil ETF (EWZ) fell as much as 26% from Friday’s close of about $42.60 to $31.40, the dollar rose as much as 12% against the real, and São Paulo exchange B3 halted trading for 30 minutes — its first circuit breaker since the COVID-19 pandemic.

The result contradicted prediction markets Polymarket and Kalshi, which had put Bolsonaro near 80% the day before the vote, and Bolsonaro said Sunday night that he does not recognize the outcome and will ask the courts to annul the election, extending political uncertainty beyond the market open.

The Ibovespa fell as much as 17% to about 170,000 points before the 10% drop trigger paused trading, and kept sliding after the 30-minute halt; for a dollar-based investor the currency and index moves combined to a loss of about 26% at their worst. Lula’s margin was about 4.4 million votes, according to Brazil’s Superior Electoral Court, while the latest Datafolha poll had the race tied at 50% each among valid votes.

Bitcoin fell below $80,000 as a broader selloff tied to AI-related markets deepened, according to Bloomberg. The move reflected risk-off pressure across crypto and technology assets.

The drop signals that risk-off pressure linked to AI-related technology trades is spilling into crypto, with bitcoin trading alongside broader risk assets.

The item frames the decline as part of a cross-asset selloff rather than a crypto-specific event.

Payward, the parent company of crypto exchange Kraken, is preparing to launch CFTC-regulated futures products for US clients, expanding its regulated derivatives offering.

It would expand Payward's regulated derivatives offering for US clients under CFTC oversight.

CoinDCX said in a blog post that 15.99 million USDT (about $16 million) was drained on the Tron network on Oct. 21, after an internal process failed to sweep customer deposits out of wallets the exchange retired following its 2025 hack. The Mumbai-based exchange said it absorbed the loss itself and that customer funds remain safe, reversing CEO Sumit Gupta's earlier public claim that reports of a breach were a "false alarm."

The admission brings CoinDCX's losses from two incidents to nearly $60 million, following the roughly $44 million hack in July 2025. It also publicly reverses the CEO's denial, turning a disputed on-chain flag into a company-confirmed loss.

The retired wallets at the center of the loss were a legacy of the earlier breach and kept receiving residual deposits, which the failed automated transfer system left exposed. On-chain investigator ZachXBT disputed Gupta's account, noting the wallet in question had still been sweeping user deposits into CoinDCX's current hot wallet as recently as April and May, and urged customers to withdraw their assets.

Akash Network co-founder Greg Osuri said the project's core team has chosen Solana as the destination for migrating Akash Network off its Cosmos sovereign chain akashnet-2, rebuilding the compute marketplace as native Solana programs and turning AKT into a Solana-native SPL token. The move is not final: the team must first pass a governance proposal on akashnet-2 requiring 33.4% quorum and a majority of yes votes, followed by two independent audits before AKT is issued on Solana.

Akash is an established DePIN compute network, so dropping its own sovereign chain would remove the AKT staking and validator structure that currently secures it and place the token inside Solana's liquidity and user base, where rival DePIN projects Helium, Render and io.net already operate. Ethereum L2s were the other shortlisted option in the team's evaluation.

Under the plan, the two-year one-way migration portal opens after the proposal passes and audits complete, converting AKT 1:1 as SPL tokens with unchanged code, decimals and total supply. The compute marketplace cutover date has not been set and requires a separate governance vote after audits and migration drills; existing workloads would run 90 days after that switch before the old chain halts, with staking rewards ending at cutover and validator roles and revenue ending when the old chain stops.

S&P Global said on October 26, 2026 that it has completed its acquisition of blockchain security firm OpenZeppelin, a deal first announced on September 17, 2026, with financial terms undisclosed. OpenZeppelin will operate as a standalone business unit led by founder Demian Brener, who reports to S&P Global Ratings president Yann Le Pallec.

S&P Global said the deal complements its digital asset risk assessment business and is meant to help traditional financial institutions and onchain firms evaluate smart contract and underlying technology risk. The company said it does not expect the transaction to have a material impact on its financial results.

OpenZeppelin, founded in 2015, provides smart contract audits, secure development services and open-source contract libraries; its security team says it has completed more than 900 audits and found over 10,000 vulnerabilities before product launch. S&P Global said OpenZeppelin Contracts will remain open source, free and publicly maintained, and that the cumulative value transferred through the libraries exceeds $38 trillion.

Strive bought 6,182 bitcoin for about $511.4 million between Oct. 17 and Oct. 23 at an average price of roughly $82,732 per coin including fees and expenses, according to SEC filings, lifting its total holdings to 43,000 BTC as of Oct. 23. The purchase moves the company close to the second-largest corporate bitcoin treasury position.

The purchase places Strive just behind the largest corporate bitcoin holders, reinforcing the corporate-treasury channel as a source of spot bitcoin demand. Strive's buying has continued even as Strategy, the largest corporate holder, made no bitcoin purchase in the same week, according to market commentary.

As of Oct. 23, Strive held $504.4 million in cash and cash equivalents, up $186.9 million from Oct. 16, along with 505,000 shares of Strategy's STRC preferred stock valued at about $50.18 million at fair value. Its Class A common shares outstanding rose by about 3.266 million to roughly 118.1 million, while SATS preferred shares stood at 7 million and SATA preferred shares were unchanged at about 14.03 million; Koin Bülteni reported the company opened the door to further purchases.

Blast reached the deadline for its standard withdrawal interface on October 26, with roughly $40.41 million in assets still sitting in its official Ethereum mainnet bridge. That figure is down about 36% from approximately $63.5 million on October 2, when the Layer 2 network announced it would wind down.

After October 26, holders can still withdraw, but only by interacting directly with the bridge contracts on Ethereum rather than through the regular website interface, per Blast's prior notice.

Blast has published contract-level withdrawal guides for ETH, USDB and BLAST; the reported process involves initiating a withdrawal on Blast, waiting for the corresponding state record to be posted to Ethereum, submitting a withdrawal proof through the OptimismPortal contract, then a challenge period and a final confirmation transaction. At the time of the report, Blast's website still displayed a withdrawal entry point and notices about the network's gradual shutdown.