Script

Structure

In addition to the rules defined by the CKB protocol, verification based on the Scripts in the input and output Cells of the transaction is also required.

Script: {
  code_hash: HexString
  args: HexString
  hash_type: Uint8, there are 4 allowed values: {0: "data", 1: "type", 2: "data1", 3: "data2"}
}

Fields & Description

Name	Type	Description
code_hash	H256	Hash of the ELF formatted RISC-V binary that contains a CKB Script. For more, see code_hash
hash_type	Uint8, one of the 4 values: {0: "data", 1: "type", 2: "data1", 3: "data2"}	Interpretation of the code hash when looking for matching dep cells. For more, see hash_type
args	H256	Arguments as the Script input. For more, see script_args

Script vs. Code

We differentiate the terms Script and Code as follows:

• Script is a data structure referencing to runnable on-chain code.
• Code refers to the RISC-V binary, runnable in CKB-VM and can be referenced to by the Script structure.
• A code Cell is a Cell containing RISC-V binary code.
• Script does not directly include code; it simply stores a pointer to reference the code.