Validation Mechanism

A validation mechanism is the set of procedures used by a network to verify that transactions and blocks are legitimate. This includes checking digital signatures, verifying account balances, and ensuring that the proposed block adheres to all protocol constraints.

In proof-of-work, this involves solving a mathematical puzzle, while in proof-of-stake, it involves attestations from validators. The mechanism is designed to prevent fraud and double-spending without a central authority.

It is the foundation of trust in a decentralized system, as it ensures that every state change is valid and authorized by the owner of the assets.