Investing
Can You Buy Bitcoin With PayPal? Options, Limits and Cautions
PayPal lets eligible US customers buy, hold and sell Bitcoin in its app. See what holding means, other ways to pay with PayPal, taxes and the scams to avoid.
EducationResearchIndependent perspective
Understand Bitcoin.
Beyond the price.
We help you understand Bitcoin, from the fundamentals of money and technology to custody, markets and the ideas shaping the ecosystem. No hype. No noise. Just clear, in-depth education and independent research.
Learning path
Start Here
New to Bitcoin? Begin with these essential guides to build your foundation and move forward with confidence.
- 01
What is Bitcoin?
A simple, clear introduction to Bitcoin, its origins and why it matters.
Read the guide - 02
Why does Bitcoin have value?
Explore the principles of scarcity, trust and network effects.
Read the guide - 03
How does Bitcoin work?
Learn about the technology, blockchain and how transactions are secured.
Read the guide - 04
How do I own and secure Bitcoin?
Practical steps to buy, store and protect your Bitcoin.
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Editorial & research
Latest Bitcoin Research
Technology
What Is a Bitcoin Transaction ID (TXID)? How to Read One
A TXID is the 64-character code that identifies one bitcoin transaction. Learn where to find it, how to read it on a block explorer and how to share it safely.
Technology
What Is a Bitcoin Block? Size, Time and What's Inside
A Bitcoin block bundles confirmed transactions and links to the block before it. See what's inside, how often blocks arrive and why their size is limited.
The Bitcoin library
The Bitcoin Library
Curated resources to help you learn, go deeper and think more clearly about Bitcoin.
Bitcoin, explained without the noise.
Clear ideas. In-depth analysis. A more grounded perspective on what really matters.
Deep dives
Deep Dives
Longer reads for deeper understanding. In-depth analysis on the topics that matter most.
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Bitcoin Basics
The History of Bitcoin: From a Whitepaper to a Global Network
From the 2008 whitepaper and the genesis block to Mt. Gox, the block size debate, halvings and spot ETFs: the key milestones in Bitcoin's history.
Money & Economics
Bitcoin and Monetary Freedom
The case that Bitcoin expands financial freedom through censorship resistance and open access, and the trade-offs and criticisms that come with it.
Technology
Inside a Bitcoin Mining Operation
What Bitcoin miners actually do, how proof of work and ASICs function, why mining uses so much energy, and how halvings change the economics.