GM. Polymarket has quietly relaunched its United States platform in beta, marking its first domestic return since 2022 and signaling a new era for regulated prediction markets.

Meanwhile, the Czech central bank added BTC to its test reserves, Dromos unveiled its unified Aero DEX for Base and Optimism, and Hyperliquid paused trading amid a POPCAT manipulation.

Here’s what’s wrapping the week in relaunches, reserves, and risk. 👇

Polymarket Relaunches US Platform in Beta Mode

Prediction market platform Polymarket has softly relaunched its US trading platform in beta mode, founder Shayne Coplan confirmed this week. The limited rollout follows resolution of a CFTC enforcement case and the firm’s acquisition of licensed exchange QCX to regain regulatory footing.

The relaunch marks Polymarket’s first domestic return since 2022, allowing select users to place real-money contracts under controlled testing. Coplan described the platform as “live and operational,” with a wider launch expected once the beta phase concludes successfully.

The comeback coincides with a multi-year partnership with TKO Group Holdings to integrate prediction features into UFC and Zuffa Boxing broadcasts. Polymarket will supply live market data during events and co-develop content tied to upcoming fight outcomes.

The relaunch also coincides with new integrations across Google Finance, Yahoo Finance, and DraftKings, signaling a broader convergence of media and prediction markets. Bloomberg previously reported the company is already in discussions to raise funding at a potential $15 billion valuation.

Czech Central Bank Adds Bitcoin to Test Portfolio

The Czech National Bank announced its first direct purchase of Bitcoin as part of a $1 million test portfolio. The experiment, approved October 30, also includes a stablecoin and tokenized deposit, marking an early digital-asset trial. Officials said the portfolio’s purpose is to study storage, auditing, and compliance requirements for blockchain-based financial instruments.

Governor Aleš Michl emphasized the initiative would not affect monetary policy or foreign exchange operations. He said the pilot aims to assess Bitcoin’s potential role in future reserve diversification. The CNB Lab, a new innovation hub, will document outcomes and publish a comprehensive review within two to three years.

Dromos Unifies Base and Optimism DEX Under Aero

Dromos Labs, developer of Aerodrome and Velodrome, announced a unified decentralized exchange platform called Aero to merge its operations. The firm said Aero will serve Base as a central hub while expanding liquidity across Ethereum mainnet and other networks. Launching in 2026, the system will offer lower fees and faster transactions through new onchain infrastructure.

Alongside the upgrade, Dromos introduced METADEX03, featuring a dual-engine design that redirects all protocol revenue back to users. A new Slipstream V3 module integrates MEV auctions into trading to capture value otherwise lost to arbitrage. The company said the combined overhaul positions Aero to rival traditional exchanges in efficiency and accessibility.

Hyperliquid Paused Trading Amid POPCAT Manipulation Probe

Decentralized exchange Hyperliquid halted deposits and withdrawals on Wednesday after detecting suspicious trading activity involving the POPCAT meme coin. Onchain analysts reported that a trader used multiple wallets to open massive long positions exceeding $20 million. The scheme’s collapse triggered liquidation losses exceeding $4.9 million, forcing Hyperliquid’s internal liquidity pool to absorb the position.

The platform confirmed that operations were paused for maintenance as it reviewed abnormal transaction flows. Analysts said the event resembled a March incident involving JELLYJELLY manipulation that left the protocol with $12 million in unrealized losses. Hyperliquid said it is investigating safeguards as it continues to target parity with centralized exchanges in liquidity.

Data of the day

Solana’s network activity fell to 3.3 million active addresses this month, its lowest level in twelve months. Analysts said the drop reflects waning meme coin enthusiasm after record growth earlier this year. PumpFun still dominates token launches, generating $1 million in daily fees despite overall declines in user participation.

Researchers said Solana’s trajectory highlights risks of ecosystem concentration and the importance of product diversification. The network continues expanding decentralized exchanges and real-world asset protocols with $10 billion in DeFi value locked. Developers said sustained infrastructure growth could reduce volatility by supporting broader utility beyond speculative token trading.

More breaking news

• OKX launched decentralized trading for US users across Solana, Base, and X Layer networks as global DEX volumes surged to record $613 billion.

• Crypto asset manager Grayscale filed for an NYSE IPO under the ticker GRAY, reporting $35 billion in assets and targeting a $365 billion total market.

• Singapore’s MAS finalized stablecoin regulations emphasizing reserves and redemption, while expanding CBDC trials and publishing a tokenization guide for capital markets products.

• Circle expanded its Arc blockchain ecosystem with an onchain FX engine and partner stablecoin program to enable 24/7 multi-currency settlement and liquidity.

• Brazil introduced proposals to treat stablecoin trades as foreign exchange and authorize seizure of crypto assets, tightening oversight of the fast-growing digital market.

• Japan Exchange Group is weighing stricter oversight of crypto treasury firms, including new audits and limits on companies pivoting into large-scale crypto accumulation.

• French authorities lifted Telegram CEO Pavel Durov’s travel ban amid an ongoing investigation, freeing him to leave France while legal proceedings continue.

• Vitalik Buterin said decentralized finance is now mature and secure enough to serve as a global savings alternative offering true financial self-sovereignty.

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