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Uniswap initiates a temperature check for the activation of v4 protocol fees, introducing a tiered fee controller system

According to official news, Uniswap Labs has released a temperature check proposal, suggesting the activation of protocol fees in the v4 pool. This proposal follows the rapid governance process previously approved by UNIfication and will directly enter a five-day Snapshot voting period, followed by on-chain voting.Due to the Hook architecture of v4 making fee settings more complex than v2/v3, the proposal has designed the V4 Fee Controller system, which includes two core contracts: V4FeePolicy calculates the fees for any pool based on governance rules, and V4FeeAdapter is responsible for executing governance overrides and collecting fees into TokenJar. Fees are calculated hierarchically based on the family of the pool: first checking the specific trading pair rate set by governance, then the family default rate, and finally the global default rate.This proposal aims to activate fees for three types of pool families across 11 chains including Ethereum, Arbitrum, Base, and BNB Chain: static rate pools without Hooks, CCA pools after continuous liquidation auctions, and aggregator Hook pools. The rates for aggregator Hook pools are adjusted by a 25x multiplier, with a default of 10 bp for non-Base chains (3 bp for stablecoin pairs) and a default of 3 bp for Base chains (1 bp for stablecoin pairs). All fees will flow into each chain's TokenJar, and the amount of UNI burned on L2 and Alt-L1 will be cross-chain bridged to the Ethereum mainnet and sent to the 0xdead address.The Snapshot voting window is from July 7 to July 12, and on-chain voting will start during the week of July 13. Since GovernorBravo limits each proposal to 10 actions, two on-chain votes will be submitted in parallel to cover all chains.

Blockchain data infrastructure company Cambrian has completed a $6 million seed round financing, led by Franklin Templeton and Polychain

Blockchain data infrastructure startup Cambrian has completed a $6 million seed round financing, led by Franklin Templeton and Polychain Capital, with participation from Flow Traders, Selini Capital, Paper Ventures, Nomad Capital, and others.Cambrian also previously secured $5.9 million in pre-seed financing led by a16z Crypto Startup Accelerator, bringing the total funding to $11.9 million. It is reported that Cambrian was established in 2024 and currently provides APIs for institutions and AI Agents, covering real-time and historical on-chain data such as yield, risk, lending rates, trading activity, liquidity positions, and market sentiment, helping users allocate capital on-chain.The company plans to expand its existing APIs into a verifiable blockchain data oracle network, serving institutional financial clients, AI Agent builders, and protocols that need reliable data to control the flow of funds. Unlike traditional oracles that mainly provide price data, Cambrian aims to aggregate lending protocol data, DEX liquidity, social sentiment, developer activity, and historical market data.According to Cambrian, its platform has processed millions of API calls, currently indexing approximately $4.5 billion TVL across four major lending protocols, tracking 1,789 vaults under 895 curators, and monitoring over 320,000 DEX liquidity pools on Base and Solana. The company also plans to expand trading data support, adding Hyperliquid and richer perpetual contract data.
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