On-chain Safety Education
Onchain Diary is an independent Web3 safety education site: 89 deep-dive articles, a 228-term glossary, and the complete BIP-39 wordlist — covering crypto scams, smart contract security, and on-chain analysis. No jargon. No sign-up. No tools to install. Just the knowledge you need to stop getting rekt.
Guides, tutorials, and deep dives.
A field guide to reporting stolen crypto: how to assemble the evidence package, file the FBI IC3 complaint field by field, send exchange freeze requests that get read, and what to realistically expect after you hit submit.
Every wallet scam that has ever worked relies on one thing: the victim not knowing which of the three wallet strings does what. The one-way chain from seed phrase to private key to public key to address, what leaking each one actually costs you, and the four attack patterns — fake verification, seed-phrase phishing, blind signing, and address poisoning — that exist only because people blur these boundaries.
In one week of September 2026, two protocols lost real Bitcoin to the same trick: minting unbacked wrapped assets with fake deposit receipts. A field dissection of the Liquid Network and Symbiosis exploits.
Online seed phrase generators are one of two things: a phishing tool that logs or pre-loads the phrase it hands you, or a negligent service that produces unauditable randomness over an untrusted channel. How legitimate wallets generate phrases on-device, why the browser can't be trusted with creation, the chatbot variant of the same trap, and the burned-phrase protocol if you've already used one.
Stolen funds usually end their trail in a privacy layer. How mixers, Zcash shielded pools, and viewing keys change crypto fund tracing, and what victims can still realistically do.
A privacy-branded crypto project claimed its identities were encrypted. The page source told a different story. Here is the three-step check anyone can run before trusting a privacy claim.
Reading is half. The other half is recall.
Every question is drawn strictly from the Yellow Paper's own text. No outside knowledge required — if you've read it, you can pass it.
Take the quiz → T-02Sixteen scenario questions sort you into one of sixteen security personas — hunter or prey — with a safety index and a shareable result card.
Find your type →A few terms to get you going — the full glossary has 228+.
Whether you're new to crypto or deep into DeFi, understanding how scams work is the best defense. Every guide here is free.
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