Glossary · P
Private Key
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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How Private Key works in practice
A private key is the secret that authorises transactions from an address. Whoever holds it controls the funds completely; there is no other layer of authentication and no authority that can override it.
Worked example
Signing a transaction proves control of the key without revealing it. The signature is verifiable by anyone and the key never leaves the device.
Figures are illustrative and chosen to be checkable, not live market data.
The mistake that costs people money
There is no recovery. A key that is lost means funds locked forever; a key that is exposed means funds gone immediately. Never enter one into a website — no legitimate service will ever ask for it.
Private Key: common questions
- What is Private Key?
- 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.
- How does Private Key work in practice?
- A private key is the secret that authorises transactions from an address. Whoever holds it controls the funds completely; there is no other layer of authentication and no authority that can override it.
- Can you give an example of Private Key?
- Signing a transaction proves control of the key without revealing it. The signature is verifiable by anyone and the key never leaves the device.
- What do people get wrong about Private Key?
- There is no recovery. A key that is lost means funds locked forever; a key that is exposed means funds gone immediately. Never enter one into a website — no legitimate service will ever ask for it.