An Attestation Node is a specialized type of node in a blockchain network that focuses on verifying and endorsing the validity of transactions or blocks. Its primary role is to confirm that the data being added to the blockchain meets specific criteria, ensuring trust and integrity.These nodes often participate in consensus mechanisms, where they assess the authenticity of proposed blocks or transactions. Upon successful verification, they provide their endorsement or attestation, which helps achieve agreement among other nodes in the network. This process enhances security and minimizes the risk of fraudulent activities.Attestation Nodes can vary in their implementation, depending on the consensus algorithm being used. Some may rely on Proof of Stake or similar methods, where nodes are incentivized to act honestly to maintain the network’s health.Overall, these nodes play a crucial role in maintaining the reliability and robustness of blockchain systems, ensuring that only legitimate transactions are recorded.