In your own words, explain what a blockchain is.
A blockchain is a distributed database or ledger that is managed by a network of computers, functioning as a decentralized and secure way to record and store information. It consists of a chain of blocks that hold batches of validated transactions or other information, which are linked together using cryptographic methods. Each block contains a record of multiple transactions and a reference to the previous block, forming an unchangeable and transparent chain of information. Its distributed nature, where the information is held across many computers and not controlled by a single entity, makes it resistant to manipulation and fraud, making it suitable for secure and transparent record keeping in various applications.
Complete the following task based on the instruction and optional input provided.### Instruction:
In your own words, explain what a blockchain is.

### Output:
A blockchain is a distributed database or ledger that is managed by a network of computers, functioning as a decentralized and secure way to record and store information. It consists of a chain of blocks that hold batches of validated transactions or other information, which are linked together using cryptographic methods. Each block contains a record of multiple transactions and a reference to the previous block, forming an unchangeable and transparent chain of information. Its distributed nature, where the information is held across many computers and not controlled by a single entity, makes it resistant to manipulation and fraud, making it suitable for secure and transparent record keeping in various applications.