What is a Digital Signature in Bitcoin?
A digital signature in Bitcoin is a cryptographic proof that the owner of a Bitcoin address authorized a transaction.
Think of it like a mathematical signature created by your wallet that proves:
- •You own the Bitcoin being spent
- •You approved the transaction
- •The transaction was not altered after signing
Unlike a handwritten signature, a Bitcoin signature is produced using advanced cryptography and can be verified by anyone in the network.
Key idea:
Your wallet never proves your identity — it only proves ownership of a private key.