Bitcoin

Lesson in the Blockchain Roadmap · Stage 3: Types of Blockchains

Last updated 14 September 2026

What is Bitcoin?

Bitcoin is a decentralized digital currency, meaning it operates without a central bank or single administrator. Transactions are verified by network nodes through cryptography and recorded in a public, distributed ledger called a blockchain. Bitcoin uses a UTXO (Unspent Transaction Output) model, where each transaction creates new UTXOs that can be used as inputs in future transactions, similar to how physical cash works.

Study this in the interactive course See the whole Blockchain roadmap

Free resources to learn Bitcoin

Official docsBitcoin
ArticleWhat Is Bitcoin? How to Buy, Mine, and Use It
ArticleWhat Is Bitcoin and How Does It Work?
ArticleMaking sense of bitcoin, cryptocurrency and blockchain
VideoWhat is BITCOIN?? Explained for Beginners

Bitcoin: common questions

Can I learn Bitcoin in Hindi?

This lesson is written in English. Once you sign in, open it in the interactive course and ask the AI tutor to explain Bitcoin in Hindi or Hinglish. The tutor answers from this lesson’s own text, so it stays on the syllabus, and it runs on your own Google, OpenAI or Anthropic key.

Is this Bitcoin tutorial for beginners?

It is lesson 26 of 127 in the free Blockchain roadmap, in stage 3, Types of Blockchains. If you are new to Blockchain, start from stage 1 and come back here in order; if you already know the earlier stages, this lesson stands on its own.