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Welcome to eth daily, a daily briefing on the latest in Ethereum. Bitcoin introduces its GTC eth liquid staking index token, the liquid collective deploys its LS eth token ten or 5 suffers a $1.6 million exploit and optimism prepares for its optimism gourley hard fork. All this and more from eth Daly starts right now. Bitcoin introduced GTC eth an index token of liquid stake in derivatives that also contributes a portion of staking rewards to get coin. GTC eth was created on index coupe, a DApp for creating custom index tokens. It also uses the same methodology as index cubes DSE liquid staking token index, which consists of R 8 by rocket pool, wrapped as the eth by lido and SET two by steak wise. Features a 3.24% variable APY for holders. 1.75% of the stake in rewards are also donated to Bitcoin. Index cube keeps a streaming fee of 0.25% for providing the service to initial liquidity pools for GTC eth have also been seated on uniswap V three. Good coin did not specify how it plans to allocate funds received from GTC eth holders. Liquid collective and enterprise liquid staking project deployed its LS eth liquid staking token. Coinbase prime and Bitcoin Susie, which are members of the collective, launched LSE support for institutional clients. The token is set to be listed for trading on coinbase. Holders can also transfer out LSE for use in DeFi. Liquid collective says LS eth holders are protected against slashing events thanks to a coverage program with nexus mutual. LSE staking consists of node operators with multi cloud multi region and multi client infrastructure, including coinbase cloud, a KYC check is required as part of minting and redeeming LS eth. Tender phi, it borrowing protocol native to arbitrum was exploited for nearly $1.6 million by a white hat, the attacker was able to drain all borrow both assets on the protocol after having deposited a single GMX token. The attacker left a message in the transaction call data stating the exploit was related to a misconfigured Oracle. Once tender fire reached out, the white hat agreed to return all still in funds -62.15 ether, which was capped as a bounty, tender phi, then repaid the bounties value back to the protocol to make users whole. It was later confirmed that a decimal error caused the contract to return to the price of GMX with 38 decimals instead of 18. Uniswap developer Mark tuda released a framework for executing sponsored transactions. The framework uses permit two, a contract that by uniswap that features time bound and signature based token approvals. It allows users to set any amount of ERC 20 tokens as payment for getting their transaction executed by a sponsor, permits you allows a sponsor to batch token transfers and verify signatures on behalf of a user. Once a user specifies and signs a set of operations along with an ERC 20 token tip, a sponsor contract can pull user tokens verify the signature perform the operations and pay the executor. The code for the framework has not yet been audited. And lastly, optimism is asking infrastructure providers to roll back to a previous version after discovering issues with a recent release. Once ready, node operators on optimism gorely are required to update their op node and Opie get clients ahead of a hard fork on March 17th. Coined as the goal of the upgrade, the fork will implement changes to deposit processing on.