Security

Private Key

Secret cryptographic information that proves control over bitcoin and is used to authorise spending.

Why it matters

Anyone who obtains a private key can generally spend the bitcoin it controls, so it must never be shared.

Your wallet normally uses private keys behind the scenes to sign a transaction without displaying the key itself.

Explore the next ideas connected to this topic.

Explore structured Academy lessons or speak with Bitcoin Access for personalised education and security guidance.