What is the mempool, and why is your transaction sitting in it?
Your transaction isn't broken, it's outbid. What the mempool is, how long a pending BTC send can wait, and the three ways to unstick it.
DeFi 101
What is a UTXO, and why does Bitcoin track money this way?
Bitcoin stores no balances, only chunks called UTXOs. That's why sending BTC hands you a new address and a fee set by your deposit history.
How Bitcoin transaction fees are actually calculated
Your Bitcoin fee is size in vBytes times your sat/vB bid. The amount you send never enters it. Here's the formula and how to pay less.
This Week in Crypto (August 10–17): The SEC Cancels Its Own Crypto Vote, ETFs Give Back $389.7M in Five Sessions, and Strategy Sells Another 1,690 BTC
The biggest item in crypto news this week is a meeting that didn't happen. The SEC was scheduled to propose crypto-specific rules for the first time on August 14, then pulled the meeting the day before and named no new date. Around that: a Bank of Japan
What is an embedded wallet, and is it really self-custody?
An embedded wallet has no seed phrase, but the key still exists. Four questions that tell you whether you actually control it.
What is a fake dApp, and how do you check before you connect?
Impersonation scams grew 1400% in 2025. How spoofed dApps copy real crypto apps, what you're actually signing, and how to check before you connect.
Session keys and auto-confirm: what you're really turning on
97% of EIP-7702 delegations pointed to attacker contracts. What session keys and auto-confirm grant, and the limits that bound them.