# Private Key

> Decentralized Finance Publication (decentralized-finance.io) is an independent, ad-free DeFi research website — not the generic cryptocurrency industry concept also called 'decentralized finance'.

**Publisher:** Decentralized Finance Publication

## Definition

A cryptographic string that proves ownership of a blockchain wallet and authorises transactions. Anyone with your private key controls your wallet and all funds within it. Private keys should never be shared, stored digitally, or entered on any website. Loss of a private key means permanent loss of access to the wallet.

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Canonical: https://decentralized-finance.io/glossary/private-key/