Everything about crypto.
Nothing to buy.
The world's most complete crypto knowledge library. Free. Neutral. India-aware. No ads. No investment advice. Pure understanding.
Where do I start?
Tell us where you are — we'll take you straight to the right place.
I've never heard of crypto
Start with why it exists, what problem it solves, and why billions of people care about it.
₿I've heard of Bitcoin but that's it
Start with Bitcoin — the original. Once you understand it, everything else clicks.
🚀I'm already in crypto, want depth
Dive into any universe — DeFi, ZK, RWA, regulation, ecosystems, participation mechanics.
Browse by topic
Don't just read. Test yourself.
Quick quizzes, basic to advanced. Every question links back to where you can learn more.
The coins everyone's talking about
No prices. No predictions. Just what they are, how they work, and why they exist.
Every corner of crypto, mapped
Each universe is a complete deep-dive — from plain-English basics to technical detail.
Blockchain Fundamentals
The technology under everything — consensus, smart contracts, Layer 1 vs 2.
DeFi
Finance without banks — lending, trading, and yield without intermediaries.
NFT Universe
Non-fungible tokens — digital ownership of art, gaming, and music.
Zero Knowledge
Proving something without revealing it — ZK rollups and privacy tech.
Real World Assets
Tokenising bonds, property, gold, and securities on-chain.
Stablecoins
Crypto that doesn't move in price — how they're backed, and how they fail.
Wallets & Security
Where crypto lives — hot vs cold, seed phrases, and your keys.
AI + Crypto
AI agents, compute markets, and the tokens powering them.
DePIN
Blockchain running real-world infrastructure — wireless, storage, energy.
Regulation
What every country says about crypto — India, USA, EU, and 80+ more.
History
Every era from cypherpunks to ETFs — the booms, crashes, and hacks.
Risk & Safety
What can go wrong — scams, collapses, rug pulls, and how to spot them.
Know the rules where you are
Crypto laws change fast. We track official regulatory positions for 80+ countries — sourced directly from government publications.
In 2010, someone paid 10,000 Bitcoin for two pizzas.
At today's values, those were the most expensive pizzas in history. Here's the full story of how crypto went from nothing to everything. →
Find your path through crypto
Six structured reading paths through the Codex. No registration. Progress saved in your browser.
Crypto for Absolute Beginners
7 pages · ~90 min · Start from zero, no jargon
India Crypto Essentials
7 pages · ~75 min · Tax, law, exchanges — India-specific
DeFi from Zero
9 pages · ~2 hrs · Swap, lend, earn on-chain
Layer 2 and Scaling
8 pages · ~2 hrs · Rollups, ZK proofs, Ethereum scaling