Ethereum
Understand who grants an ERC-20 allowance, what it permits, and how it differs from a wallet connection or a completed swap.
Based on reporting by Ethereum ERC specification, MetaMask, OpenSea
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Learn how gas used, the gas limit and per-unit fees combine, and why an estimate may differ from the fee recorded after execution.
Based on reporting by ethereum.org, Etherscan, MetaMask
Read articleBitcoin
Learn what a Bitcoin payment’s notification, confirmation count and block details tell you—and why they cannot promise an arrival time.
Based on reporting by Bitcoin.org, Blockstream, Bitcoin Core
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