Blockchain

Understand the mechanisms, then explore their implications.

A blockchain is a shared record whose updates are grouped into blocks linked by cryptographic fingerprints.

A cryptographic hash maps data to a fixed-length fingerprint.

A block contains transactions and metadata.

Validation asks whether an operation follows the rules.

A wallet builds a transaction for a selected network, destination and fee.

A secure base chain can host an insecure application.

An explorer presents an indexed view of a network.