HTLC stands for Hash Time-Locked Contract. It is a smart contract used in blockchain transactions to ensure security and trust between parties without needing intermediaries.HTLCs enable atomic swaps, allowing users to exchange different cryptocurrencies directly. The process involves creating a contract that locks funds with a cryptographic hash. Both parties agree on this hash and a time limit for the transaction.When one party completes their part of the swap, they reveal the hash’s secret. The other party can then use this secret to unlock the funds. If the transaction does not occur within the specified time, the funds are returned to the original owner. This mechanism reduces the risk of fraud and increases trust, as both parties must act within the agreed timeframe.Overall, HTLCs enhance security in cryptocurrency transactions by ensuring that either both parties benefit or neither party loses anything, making them a crucial tool for exchanging assets on different blockchains.