# Crypto Exchanges Glossary

> 6 terms from the Investing & Digital Assets book's Crypto Exchanges part, each defined in a line and linked to the chapter that explains it.

- **Confirmation (chain):** a block added after the block holding a transaction; exchanges credit some chains' deposits after a set count (Kraken: three for bitcoin) ([The Investing & Digital Assets Business](https://www.syntaqx.com/books/investing-and-digital-assets/investing-business#the-life-of-a-crypto-trade)).
- **Deposit address:** a chain address, or a shared address plus a memo or tag, assigned to one customer account so incoming transfers can be credited to it ([The Investing & Digital Assets Business](https://www.syntaqx.com/books/investing-and-digital-assets/investing-business#the-life-of-a-crypto-trade)).
- **Finality:** the point after which a chain's block can't be reverted short of a prohibitive cost; on Ethereum, a finalized checkpoint, which an attacker would need to sacrifice at least one-third of staked ETH to revert ([The Investing & Digital Assets Business](https://www.syntaqx.com/books/investing-and-digital-assets/investing-business#the-life-of-a-crypto-trade)).
- **Omnibus wallet:** one wallet holding many customers' crypto in the custodian's name, with the internal ledger recording each customer's share ([The Investing & Digital Assets Business](https://www.syntaqx.com/books/investing-and-digital-assets/investing-business#the-life-of-a-crypto-trade)).
- **Reorg (reorganization):** a chain replacing its most recent blocks with a different sequence, which can remove a transaction that had been seen in a block ([The Investing & Digital Assets Business](https://www.syntaqx.com/books/investing-and-digital-assets/investing-business#the-life-of-a-crypto-trade)).
- **Sweep (crypto):** an on-chain transaction moving funds from deposit addresses into the exchange's hot or cold wallets; it changes where an asset is, not whose ([The Investing & Digital Assets Business](https://www.syntaqx.com/books/investing-and-digital-assets/investing-business#the-life-of-a-crypto-trade)).

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