Transaction Signing
Transaction signing is the cryptographic process of authorizing a blockchain transaction with the required private-key or account-signing credentials.
✦ Key Insight
It is the step that turns transaction intent into valid authorization.
✕ Common Misconceptions
Never sign transaction data you do not understand; valid signatures can authorize irreversible actions.
Detailed Explanation
In Practice
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Hardware Wallet
A dedicated physical device that stores private keys offline and signs transactions internally.
Private Key
The secret number that authorises spending from a crypto address.
Transaction
A blockchain transaction is a signed or authorized instruction that changes blockchain state or transfers value when accepted by the network.
Signature
A cryptographic signature proves that the holder of a private key authorized specific data without revealing the private key itself.
Blind Signing
Blind signing means approving a blockchain transaction or message without being able to clearly verify all the actions or data being authorized.