Flash loans are uncollateralized DeFi loans that must be borrowed and repaid within a single transaction. The mechanism, legitimate use cases, exploit context, and constraints explained.

DeFi lending protocols liquidate undercollateralized positions automatically. Here's how the mechanism works, who executes liquidations, and what cascade risk looks like in practice.

Perpetual futures are the dominant trading instrument in crypto by volume. Here's how the funding rate, mark price, and liquidation systems actually work.

A derivative is a contract whose value comes from an underlying asset — not the asset itself. This explains futures, perpetual swaps, options, the funding rate mechanism, and where each instrument lives in the market.

An order book is the mechanism through which buyers and sellers establish price on an exchange. This post explains how bids, asks, and matching engines work — and where AMMs fit in.

Hardware wallets secure crypto by storing private keys in a tamper-resistant chip. Transaction signing happens inside the device — the key never leaves, even on a fully compromised host computer.

Multi-signature wallets require M-of-N private keys to authorize a transaction. This post explains the threshold structure, how Bitcoin and Ethereum implement it differently, and where the real tradeoffs live.

Crypto governance is the process by which protocol changes get made — who proposes them, who votes, and how binding those votes are. The mechanisms differ significantly across Bitcoin, Ethereum, and DeFi protocols.

Airdrops distribute tokens to wallet addresses — but the mechanism varies by type and the eligibility design is what actually matters. Three structures, one arms race, and where the legal constraints currently live.

Token burns permanently remove tokens from circulating supply by sending them to verifiably unspendable addresses. Three distinct burn structures exist — protocol-level automatic burns, buyback-and-burn programs, and manual one-time burns — each with different durability and governance properties.

Transaction fees don't just go to 'the network.' On Bitcoin, miners collect everything. On Ethereum, the base fee is burned and tips go to validators. On Solana, fees are split. This post maps how fee distribution actually works — and why the differences matter for network economics.

Every new block on a blockchain pays out a reward to whoever produced it. Block rewards do two things: create new cryptocurrency and compensate the participants who keep the network running. Here's how the mechanism works — and why it matters.