defi

The decentralized perpetual contract exchange Deepsigma has launched a real-time simulation trading platform, covering 77 traditional financial markets, including U.S. stocks, stock indices, commodities, and U.S. Treasury yield rates. The platform is developed based on the Cypherium blockchain, driven by a team of alumni from Goldman Sachs, Citadel Securities, Google, and Uber, supporting long and short exposure trading of related assets.Deepsigma's perpetual contracts do not tokenize, custody, or physically deliver the underlying assets but instead track prices through external market data sources. The platform currently supports the S&P 500 Index, Dow Jones Industrial Average, Nasdaq Composite Index, Russell 2000 Index, Cboe Volatility Index, as well as contracts for crude oil, gold, silver, natural gas, and copper. The platform's risk engine employs multiple external price sources, mark prices, circuit breaker mechanisms, partial liquidation, and insurance funds, and uses a central limit order book and clearing layer to handle margin, collateral, and settlement.Deepsigma is also developing a decentralized identity framework based on zero-knowledge proofs and configuring off-chain AI analysis tools with no fund execution permissions; the underlying Cypherium utilizes a hybrid PoW and HotStuff Byzantine Fault Tolerance consensus mechanism, holding 4 U.S. patents.

According to data from the U.S. Department of the Treasury, as of September 30, the fiscal year 2026 U.S. budget deficit expanded by $217 billion year-on-year to $1.99 trillion, the highest level since the fiscal year 2021. Fiscal revenue reached a record $5.4 trillion, while expenditures amounted to $7.4 trillion. Debt service expenditures increased by 12% to $1.36 trillion. A Supreme Court ruling led to the refund of $145 billion in tariffs, resulting in a net tariff revenue decline of 11%. The budget deficit accounted for 6.2% of GDP.

Binance Wallet announces the launch of the DeFi API. This interface is based on its Web3 API infrastructure, allowing developers to integrate DeFi capabilities without connecting to each protocol individually, initially supporting 10 EVM chains including BSC, Ethereum, Base, and Robinhood Chain.The interface covers protocols such as Aave, Morpho, and Uniswap, supporting the discovery of DeFi products, tracking positions, obtaining protocol insights, and building trades. It also allows for the creation of trades to add liquidity to supported bStocks liquidity pools. Solana support is coming soon.

Aave V4's Arc Markets connects USD and EUR loans to shared liquidity. This deployment went live on September 16 and includes four types of reserve assets.Among them, the Forex market allows borrowers to collateralize EURC, while EURC does not qualify as eligible collateral in Arc's Main market, thus both markets share the same liquidity source.

According to The Block, Nasdaq-listed Solana reserve company DeFi Development Corp. (DFDV) announced that it will raise the annual dividend yield of its CHAD preferred stock from 13% to 14%, effective November 2. Based on a par value of $10 per CHAD share, the annual dividend will increase from $1.3 per share to $1.4 per share, paid once every business day, contingent upon the company's board declaring the dividend. The company stated that future funds raised from CHAD issuance will be used to expand its Solana reserves, which generate income through staking and validating node operations.CEO Joseph Onorati stated that raising the dividend yield to 14% will help expand investor participation and grow the scale of CHAD. He noted that the appeal of CHAD lies in providing double-digit dividend income through Nasdaq-listed preferred securities, with daily payouts, while the issuer holds income-generating SOL reserves. The company aims to position CHAD as a leading digital credit tool, enhancing the ability to accumulate SOL, adding value for common stock shareholders, while maintaining prudent capital management.DeFi Development increased its holdings by approximately 22,070 SOL and equivalent assets last week, raising its total holdings to about 2.59 million SOL; the company stated that CHAD reached a new trading price high that week and recently approved a buyback plan to repurchase up to all issued CHAD shares.

According to The Defiant, the on-chain insurance protocol Firelight based on the Flare network announced on October 15 that its on-chain insurance has launched the Protected Strategies USDC vault for Kraken DeFi Earn, providing a collateral-backed compensation mechanism for specific protocol failures.The independent manager of the vault, Sentora, insures the vault rather than Kraken itself. Depositors do not need to actively choose to participate, but the insurance comes with conditions: Kraken discloses that the compensation limit for each deposit address during each insurance period is $100,000, and the total compensation amount is also constrained by the overall vault limit and available capital. Compensation is issued by Sentora in USDC to eligible wallets, and Kraken does not provide funds or guarantees.Firelight lists six types of failures that are eligible for compensation: smart contract vulnerabilities, oracle failures, governance attacks, and bad debts, depegging, or redemption failures caused by protocol mechanism failures. Insurance only applies to markets and positions recorded during the insurance period. Normal fluctuations, normal liquidations, depegging that operates as designed during redemption, and withdrawal delays caused by high organic utilization are excluded; insider theft, stolen private keys, phishing, and regulatory actions are also not covered.The trigger conditions for redemption failure are if the insured position cannot be withdrawn for more than 72 consecutive hours, or if the amount returned after deducting disclosed fees is less than 90% of fair value. Compensation does not require depositors to file claims themselves, as it is determined by a five-member risk committee through a three-fifths majority vote.On-chain records show that the insurance scale marked as "Kraken DeFi Protected" is $30.5 million.

Grayscale announced a partnership with the investment platform Republic to offer Grayscale's investment products to qualified investors, including the Grayscale DeFi Fund, Grayscale Decentralized AI Fund, and Grayscale Data Network Trust.Among them, the DeFi Fund covers tokens such as UNI, AAVE, ONDO, ENA, CRV, and LDO; the Decentralized AI Fund covers tokens such as NEAR, TAO, RENDER, and FIL; the Data Network Trust provides investment exposure to the native token DATA of the DATA Network.

According to The Defiant, Jupiter has launched a beta trading product called YOLO, which supports up to 1000 times leverage, and this product has not yet been audited.According to the official statement, users trade against the platform's capital pool (house) in this product. When the capital pool is insufficient, users' profits will be queued for processing, and there is no guaranteed payment time.

The decentralized trading protocol Uniswap announced that the VolatilePair Hook has been launched on the Ethereum mainnet, with the first trading pair being ETH/USDC. This is a dynamic fee Hook for liquidity providers in Uniswap v4, where fees adjust according to market fluctuations.Uniswap stated that this year, the trading volume of volatile trading pairs on Uniswap exceeded $50 billion. Unlike stablecoin trading pairs, these assets do not have a fixed price, and liquidity providers under static fees will bear the price changes not covered by the fees. This Hook recalculates the buy and sell rates separately for each exchange based on recent price changes, maintaining competitive spreads.When the pool price rises, the buying cost is higher and the selling cost is lower; when the price falls, the direction of the fees is reversed. After significant price changes, trades that drive price retractions will pay temporary fees. Pool parameters and fee logic can be upgraded through Uniswap governance without the need to migrate liquidity pools. The StablePair Hook, launched in September, introduced dynamic fees for stablecoin trading pairs, achieving a trading volume of $3.1 billion within four weeks. The VolatilePair Hook is part of the Hooks launched by Uniswap Labs, along with StablePair, Permissioned Pools, and LitePSM.

X user Irene Patrikios (@crypto_irene) announced that she has been appointed as the Chief Business Officer of the fully homomorphic encryption company Zama. She stated that she has been working in the cryptocurrency industry for nearly 12 years and believes that blockchain requires institutions, enterprises, and individuals to publicly operate financial activities, a gap that has long existed and is difficult to support large-scale funds on-chain. She joined the company in November 2025, before the launch of the Zama mainnet, and stated that confidentiality is the infrastructure that enables institutions holding global capital to truly go on-chain, and Zama is providing this capability.Irene Patrikios also mentioned that over the past year, Zama's business team has reached collaborations with several major participants to launch confidential DeFi and establish a business pipeline. Zama's CEO Rand Hindi and the board are increasing support for the next phase of the team's development. She expressed her gratitude to Rand Hindi, the board, and the Zama team.

The decentralized trading protocol Uniswap has launched an ETH/USDC trading pool, which uses a separated fee mechanism for buying and selling, applying different fee standards for buy and sell transactions.This pool is implemented through the VolatilePair Hook, which will charge temporary fees on trades that reverse significant price fluctuations, aiming to retain more arbitrage value for liquidity providers.

According to The Defiant, Babylon is advancing a native Bitcoin collateralization plan for Aave V4. Under this proposal, the collateral will remain on the Bitcoin network, while the permissionless liquidation process will settle using WBTC.Currently, the risk parameters of the plan and subsequent governance votes are yet to be determined.

Chainlink's Data Feeds and Data Streams have officially launched on the Stellar network.Stellar stated that developers can use this to access reliable market data, develop lending markets, prediction markets, perpetual contracts, and other DeFi applications, further enhancing the utility of Stellar's over $4 billion RWA ecosystem.

The DeFi protocol Sky (formerly MakerDAO) announced that the second SKY token burn has been completed, with a total of 7.37 million SKY permanently removed from circulation, approximately 2.6 times the initial burn of 2.86 million.The funds for this burn come from 5% of the monthly net protocol surplus, and this mechanism ties the protocol's performance to a permanent reduction in the supply of SKY.

DeFi yield protocol infiniFi announced the token economics of its native token INFI and announced an upcoming Token Generation Event (TGE).According to the allocation plan, 45% is allocated to the ecosystem, with the team and investors each accounting for 20%, and the foundation accounting for 15%. infiniFi adopts an on-chain partial reserve model, primarily providing stablecoin deposits and yield management services.

The IMF stated that the economic growth in the United States is insufficient to quickly address the expanding government debt and fiscal deficit issues, and other measures are needed to improve the fiscal situation. IMF President Kristalina Georgieva said in Bangkok that although higher economic growth helps alleviate the debt burden, relying solely on growth may not be enough to offset the pressures brought by high deficits and high interest expenditures.

According to a report by the Korean News Agency, the Commissioner of the National Tax Service of Korea, Lim Kwang-hyun, stated during a National Assembly Finance, Economy, and Planning Committee inspection that the National Tax Service is preparing to announce taxation standards for virtual assets in November.Lim Kwang-hyun pointed out that the taxation standards for transaction types such as airdrops, hard forks, staking, and decentralized finance (DeFi) focus more on the economic substance rather than the form of the transaction, with whether it is a transfer or a loan being the key determining factor. If airdrops and hard forks have the nature of a transfer or loan, they should be considered taxable objects, while some details regarding staking still need to be discussed with the Ministry of Economy and Finance.

According to official news, Starknet announced the launch of shadow accounts, allowing users to participate in public DeFi activities through an independent address controlled by themselves, while keeping the association between this address and the main wallet confidential.Shadow accounts are independent pseudonymous addresses on Starknet, with funds sourced from the user's protected STRK20 balance. The first integration will go live tomorrow. The balance, transaction records, and holdings in various applications of the shadow account will still be publicly visible on-chain, but STRK20 can protect the association information between the shadow account and the user's main wallet. This means that users do not need to hide their DeFi activities themselves, while also reducing the likelihood of external observers tracing related activities back to their main wallet.