Blockchain, or "Chain of Blocks," is a decentralized and collaborative network of nodes (computers) that work together to maintain and verify a transaction record. Each node is equal to the others, removing the need for intermediaries and allowing information to flow freely among them.

Imagine a vast digital ledger that is continuously updated and shared in real-time among all network participants. Each transaction is recorded in a block, and these blocks are linked together using complex cryptographic algorithms. This creates an immutable chain of information, where each block contains a set of verified transactions sealed in time.

Once information is recorded in a block and added to the chain, it cannot be altered or deleted. This provides high security and transparency, as each participant can verify transactions and their history without fear of manipulation.

A notable aspect of the Blockchain is that it operates on a consensus basis. Before a transaction is accepted and added to the chain, the majority of nodes must agree that it is valid. This ensures greater confidence in the integrity of the records and prevents any attempts at fraud.

In the world of cryptocurrencies, the Blockchain plays a fundamental role in maintaining a secure and verifiable record of all transactions.