Posts tagged #finance

Bitcoin tracks unspent outputs, not balances. Here's how the UTXO model works, where change goes, and why sending $50 can cost more than sending $50,000.

Your wallet shows one number, but an Ethereum fee is really three: a burned base fee, a tip for the validator, and a ceiling you mostly get refunded.

Why bond prices fall when yields rise, how duration turns that into a percentage you can calculate, and what 2022 showed about it.

Network tokens swap your 16-digit card number for a merchant- or device-bound token plus a one-time cryptogram. Here's how the pieces fit together.

How much you put into a trade decides whether you survive a losing streak. Here's the math behind fixed fractional sizing, the 1% rule, and half-Kelly.

Perpetual futures never expire. Here's how the funding rate keeps them pinned to spot, what it costs to hold one, and why leverage makes the math unforgiving.

Bitcoin pays miners mostly in newly issued coins, and in 2026 fees cover under 1% of miner revenue. Here's how the security budget works and why fees matter.

Most US retail stock orders never touch an exchange. Here's how wholesalers, payment for order flow, and the NBBO decide your price, and what changed in 2026.

Why bank transfers take the time they do, how ACH files and settlement windows work, and what Nacha's 2026 fraud-monitoring rules changed for senders.