Definition ∞ Bit-masking is a computer programming operation that selectively manipulates specific bits within a binary number. This technique employs a mask value with bitwise operators like AND, OR, XOR, or NOT to set, clear, or check the status of individual bits. It is fundamental for data compression, permission management, and flag handling in low-level computing. Its efficiency stems from direct hardware manipulation.
Context ∞ In blockchain systems, bit-masking can optimize data storage within transaction headers or state representations. It facilitates efficient encoding of various parameters or flags, reducing the data footprint on the distributed ledger. This approach is critical for enhancing scalability and processing speed in resource-constrained environments.
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