Definition ∞ Single-sig control refers to a cryptographic security method requiring only one digital signature to authorize a transaction. In this system, a single private key holds the sole authority to initiate and approve actions, such as spending digital assets from a wallet or executing a smart contract function. While straightforward and efficient for individual users, it introduces a single point of failure, making the assets vulnerable if the private key is compromised or lost. This method contrasts with multi-signature (multi-sig) setups that require multiple approvals.
Context ∞ Single-sig control remains a standard for many individual cryptocurrency users due to its simplicity, though discussions in crypto news often highlight its inherent security risks. Reports frequently detail incidents of asset loss stemming from compromised single private keys, prompting increased advocacy for multi-sig solutions, especially for substantial holdings. The ongoing debate balances ease of use against enhanced security measures within the digital asset custody landscape.
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