What is a satoshi, and why does crypto have so many decimal places?

What is a satoshi?

A satoshi is the smallest unit of Bitcoin. It equals one hundred-millionth of a bitcoin, written as 0.00000001 BTC. In the same way that a cent is a fraction of a dollar, a satoshi is a fraction of a coin, only far smaller. The name is simply the label for that smallest step, and it does not change the coin itself. Bitcoin and its satoshis are the same asset counted in different units.

Why does crypto have so many digits after the decimal point?

Most cryptocurrencies are built to divide into very small units. That lets you hold and send a fraction instead of being limited to whole coins. A single whole coin can be a large amount, so nobody wants to move funds only in whole-coin steps. Long decimals are what make small, precise payments possible. They are not a sign of anything unusual, just of how finely the coin can be split.

How many decimal places do USDT and USDC use?

Stablecoins like USDT and USDC are usually handled to six decimal places on the networks the wallet supports. That is fewer digits than the eight that bitcoin's satoshi implies, but still finer than everyday cents. The table below sets the units side by side so you can see what to expect when you meet each one.

Why does the amount field matter more than the coin count when sending?

Because units are so small, the amount field, not just the whole-coin count, is what matters when sending. A misplaced digit or a shifted decimal point can turn a small transfer into a very different sum. Blockchain transfers are irreversible, so nobody can bring back a transfer sent with the wrong amount or to the wrong address. Deposits also have a floor: every network has a minimum amount shown in the app, and deposits below it are not credited. A tiny fraction can therefore fall short of that minimum.

How do I avoid mistakes with tiny amounts?

Slow down at the moment of typing and check three things before you confirm:

• the amount, including the position of the decimal point and the number of zeros;
• the network, since each deposit address belongs to one network and a coin sent through another will not arrive;
• the address itself, character by character.

If a wallet shows the amount you will receive before you confirm, as Nexus Pay does for swaps, compare it with what you expected. That final check costs a few seconds and can prevent an error that cannot be undone.

How do units show up in a wallet like Nexus Pay?

Nexus Pay holds USDT, USDC, BTC and ETH, so you will see fractional balances there. USDT and USDC can be deposited via TRC-20, ERC-20, BEP-20 and TON, and BTC and ETH via their own networks. Swapping coins inside the wallet costs 0% and uses the exchange rate with no markup, and the amount you receive is shown before you confirm. Read that figure with the units in mind, especially when converting into or out of bitcoin. This article is general information, not financial advice.

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