Validation Definition - Glossary

Validation is the process of confirming transactions on a blockchain, ensuring their accuracy and integrity.

Validation is a critical process in blockchain technology that ensures transactions are legitimate and adhere to protocol rules. When a new transaction is initiated, it must be verified by network participants, often called validators or miners, depending on the blockchain's consensus mechanism. Validators check the transaction's authenticity, confirm its details, and then add it to the blockchain. This process helps prevent fraud, double-spending, and errors, maintaining the network's trust and security. In proof-of-stake systems, validators are chosen based on their stake, while in proof-of-work systems, miners compete to solve complex puzzles.