Blockchain technology is a decentralized, distributed ledger technology that records transactions securely and transparently across a network of computers. Each block in the chain contains a cryptographic hash of the previous block, creating an unbreakable data chain

Blockchain technology provides several benefits, including increased security, transparency, and efficiency. It can also reduce costs by eliminating intermediaries and automating processes.

A decentralized application (DApps) is an application that runs on a decentralized blockchain network. DApps are typically open source and operate autonomously without a central authority controlling the application.

A blockchain smart contract is a self-executing contract that is programmed to automatically execute when certain conditions are met. Smart contracts are typically based on blockchain technology and can be used to automate and secure a wide range of business processes.

Blockchain technology ensures security by using cryptography to secure transactions and maintain the integrity of the blockchain. Transactions are verified by a network of computers, making it difficult for anyone node to manipulate the blockchain.

Smart contracts work by executing code that is programmed to execute when certain conditions are applied. They are typically based on blockchain technology and are immutable as they can't be altered once they are deployed.