On-chain security refers to the measures and mechanisms that protect data and transactions directly recorded on a blockchain. It ensures that the information stored is secure, immutable, and verified by the network’s participants.One primary aspect of on-chain security is cryptography, which safeguards data through complex algorithms. This protects transactions from unauthorized access and tampering. When a transaction is conducted, it is bundled into a block, which is then added to the chain in a manner that links it to previous blocks, making retroactive alterations nearly impossible.Another key element is consensus mechanisms. These protocols, like Proof of Work or Proof of Stake, validate transactions and maintain the integrity of the blockchain. Participants, known as nodes, work together to achieve agreement on the current state of the ledger, ensuring that all copies of the blockchain are consistent.Overall, on-chain security builds trust in the system by making it highly resistant to fraud and attack, enabling users to confidently transact without intermediaries.