Definition ∞ Transaction authorization is the process by which a user or system grants permission for a digital asset transaction to be executed on a blockchain network. This typically involves cryptographic signing using a private key, confirming the sender’s identity and intent. Without proper authorization, no transaction can be processed or recorded on the distributed ledger. It is a fundamental security mechanism in decentralized systems.
Context ∞ The security and user experience surrounding transaction authorization are paramount for the widespread adoption of digital assets. Discussions frequently address the trade-offs between convenience and the robust protection of private keys. New authorization methods, such as multi-signature wallets or account abstraction, aim to enhance both security and usability. Preventing unauthorized access remains a continuous priority for wallet providers and protocol developers.
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