sha256witnessScript

sha256witnessScript refers to a specific type of script utilized in blockchain technology, particularly within the context of the Bitcoin network's Segregated Witness (SegWit) upgrade. Its primary function is to allow a transaction to be validated by verifying the hash of its corresponding script, rather than the entire script itself. This is achieved by using the SHA-256 hashing algorithm. When a transaction utilizes sha256witnessScript, it includes a commitment to the transaction's script, which is then committed to a Merkle tree within the block. Miners and nodes can then verify the integrity of the script by checking this commitment without needing to download or process the entire script content. This mechanism contributes to increased transaction efficiency and scalability by reducing the amount of data that needs to be processed for each transaction verification. The "witness" aspect highlights that this script data is considered separate from the core transaction data, enabling the reduction of transaction size and the associated fees.