wasm_to_hash

Command

clio convert wasm_to_hash [OPTIONS] <wasm-file>

Description

Convert a WASM file to its hash. This command computes the SHA-256 hash of a WASM file, which can be used to verify contract code integrity or compare contract versions.

Synopsis

clio convert wasm_to_hash
  <wasm-file>                         # REQUIRED: The WASM file name
  [-h | --help]                       # Print this help message and exit
  [--help-all]                        # Show all help

Examples

Get hash of a WASM file

clio convert wasm_to_hash mycontract.wasm

Output:

WASM hash: 1a2b3c4d5e6f7a8b9c0d1e2f3a4b5c6d7e8f9a0b1c2d3e4f5a6b7c8d9e0f1a2b

Use with contract verification

# Get the hash of your local WASM
clio convert wasm_to_hash ./build/mycontract.wasm

# Compare with the deployed contract code hash
clio get code mycontract --wasm deployed.wasm
clio convert wasm_to_hash deployed.wasm

Requirements

• Install the currently supported version of clio.
• A valid WASM file.

note

The clio tool is bundled with the Wire software. Installing Wire core will install the clio and kiod command line tools.