On-chain Safety Education
Onchain Diary is an independent Web3 safety education site: 101 deep-dive articles, a 232-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 pig butchering 'investment platform' shows you fake gains while your money is already moving. Inside a fully documented $73 million laundering pipeline: shell company bank accounts, a Bahamian bank, conversion to USDT, and a wallet that received $341 million. What each hop looks like on-chain, where tracing dies, and the evidence chain that actually gets cases worked.
FomoPeek passed App Store review as a read-only whale tracker, then shipped an iOS kernel exploit that decrypts the Keychain. Timeline, forensics, victim steps.
Zcash's zkSNARKs identity auction drew 16,971 bids and cleared at 1.5 ZEC; the secondary floor sits near 2 ZEC on Zilkroad. But with ZSA not on mainnet, ownership lives in a database — and the market data is unverifiable by design.
ZEC holders moving funds off exchanges face a fork in the road: transparent addresses work on any hardware wallet, shielded addresses mostly don't. What Trezor and Ledger actually support, three working cold-storage setups, and the scams targeting new Zcash users.
The SQUID token let people buy but never sell, and it ran on BNB Chain. Learn the specific scam patterns on BSC and the exact steps to verify any BEP-20 token before you buy.
Polygon's low fees and Ethereum association attract legitimate DeFi and every clone-token scam that follows. The exact steps to verify any Polygon token before you buy.
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 232+.
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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