// definition
Transaction weight
Bitcoin’s SegWit space measure
freshreviewed 1 day ago
Short definition
SegWit’s measure of transaction space: four weight units per byte of base data and one per byte of witness data. Virtual size is weight divided by four, rounded up. Weight alone does not set the fee, which also depends on the offered price for block space.
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Intuition
Data, weight and the fee rate describe different parts of the cost.