1. Check Your Wallet App or Platform:
The wallet or exchange where you conducted the transaction typically provides TXID in the "Transaction History" section.
2. Use a Blockchain Explorer:
Use a blockchain explorer specific to the cryptocurrency involved in the transaction. For example:
For Bitcoin: blockchain.com
For Ethereum: etherscan.io
3. Transaction Summary:
Look for TXID in the transaction details in your wallet. It’s usually a long string of letters and numbers.