OP_HASH256 - Bitscript

Type in a script or op_code

OP_HASH256

(170 | 0xaa)

Input

1 items

Output

1 items

The operation OP_HASH256 represents a specific double hashing using the SHA-256 algorithm. It takes an input, hashes it once with SHA-256, and then hashes the result again with SHA-256. This double hashing is a distinctive part of the Bitcoin protocol and is used notably in the creation of block hashes and transaction IDs.

OP_Code Walkthrough

Double-hashes the top item on the stack using the SHA256 algorithm.

Pop top item

Apply First SHA256 hash

Apply Second SHA256 hash

Push twice-hashed item

Used In	Description
P2PKH (pay to public key hash)	The most basic script for a direct transfer. Rarely used, but a good starting point.

Used In

P2PKH (pay to public key hash)

Description

The most basic script for a direct transfer. Rarely used, but a good starting point.

Times Used

0x38ADD1aD...

Example