Miniscule amounts of Bitcoin in a wallet — with a value that would be outweighed by the cost of a transaction fee.
Dust is a very small amount of cryptocurrency, usually worth less than one cent, that cannot be traded or sold on an exchange. This usually occurs when a user makes multiple transactions or trades, and the leftover amount is too small to be sold or exchanged.
More often than not, the value of dust in a dust transaction will be significantly lower than the actual fee for moving the tiny particles. In many cases, this is the reason why these fractions end up gathering across wallets and rarely see the light of day.
However, dust transactions are not only used nefariously. There are some charitable organizations, such as Dust Aid, which allow users to sweep up pockets of dust from their wallets and donate them to good causes.
To remove crypto dust, you can either contact the exchange and ask them to consolidate the dust into a larger amount, or you can use a service such as DustSweeper, which automatically sweeps up small amounts of cryptocurrency and combines them into a larger amount.
Contacting the exchange involves providing them with a wallet address and requesting that they send the remaining balance to that address. In most cases, the exchange will be happy to oblige, but do your due diligence and research the exchange before sending your funds.
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