Dec 27, 2025 · What Is a Blockchain? A blockchain is a distributed database or ledger shared across a computer network's nodes. While it is best known for its crucial role in cryptocurrency …

In blockchain technology, a testnet is an instance of a blockchain powered by the same or a newer version of the underlying software, to be used for testing and experimentation without …

Dec 30, 2025 · Understand how blockchain technology works and its applications in finance, supply chain management, healthcare, and more.