Implement time-locked transactions within blockchain protocols to restrict the movement of assets until a predetermined time or block height is reached. This mechanism ensures that funds cannot be accessed or transferred prematurely, adding an extra layer of security against unauthorized actions. A relevant study in this area is “T-Watch: Towards Timed Execution of Private Transactions in Blockchains” by Chao Li and Balaji Palanisamy. This paper introduces T-Watch, a decentralized and cost-efficient approach that enables users to schedule the timed execution of transactions in Ethereum with privacy guarantees. By employing a combination of threshold secret sharing and decentralized smart contracts, T-Watch ensures that private elements of a scheduled transaction remain undisclosed before the specified future timeframe. The protocol is designed to run optimistically by default and switches to a pessimistic mode upon detecting misbehavior, thereby enhancing security and efficiency. The study demonstrates that T-Watch is more scalable compared to existing solutions and can reduce costs significantly through pooling.
