Guides

Crypto guides, answered directly

Each guide opens with the answer to the question in its title. Longer pieces include a jump-link contents rail so you can skip to the part you need.

Guides that involve clicking through a real platform interface are only published once we have captured the screenshots ourselves from the official English interface. We do not illustrate steps with recreated or AI-generated mock-ups.

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Guide

Bitcoin Transaction Fees: sat/vB, Mempool Congestion and Fee Estimation

A Bitcoin fee is a rate multiplied by virtual size. How weight and vsize are defined, how to read Core's BTC/kvB estimate, and what block space does to the price.

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Guide

Bitcoin's Supply Schedule: Subsidy, Halving and the 21 Million Limit

Every block pays a subsidy that halves every 210,000 blocks. How Bitcoin Core computes it, where the 21 million figure comes from, and what the current epoch pays.

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Guide

Sub-Accounts and API Key Isolation: Limiting What One Key Can Do

A trading bot needs to place orders, not move coins. Sub-accounts and scoped keys separate those powers, and the venues offer more controls than most use.

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Guide

Stop-Limit vs Stop-Market Orders: What the Second Trigger Costs You

Both order types wait for a stop price. One then sends a market order, the other a limit order, and that second step decides whether you get out at all.

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Guide

Order Book Imbalance: What Depth Says That the Last Price Does Not

The last trade is one number; the book around it is a distribution. Depth and imbalance describe the queue behind the price, within limits.

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Guide

API Rate Limits and Order Weights: Why Your Script Gets Throttled

Request weight and unfilled orders are different budgets, enforced against different identities. What the venues publish, and how to back off.

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Guide

Wrapped Tokens: Minting, Custody and Redemption Risk

A wrapped token is a claim on an asset held somewhere else. The wrapper's design determines who holds it, how you get it back, and what happens when you cannot.

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Guide

Canonical L2 Withdrawals vs Liquidity Bridges: Cost, Finality and Trust

A canonical rollup withdrawal proves your exit on L1 after a dispute window. A liquidity bridge pays you now and carries the wait itself. The trade is time against trust.

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Guide

MEV and Sandwich Attacks: How DEX Execution Can Be Affected

Maximal extractable value is profit from choosing which transactions land and in what order. A sandwich attack is the version that reaches an ordinary swap.