Hash

Hash data quickly for identifiers, integrity checks, and tooling when building on Polkadot with Pop CLI.

When you're building on Polkadot, you'll often need hashes — to verify files, derive stable identifiers, or work with chain primitives. The pop hash command gives you a fast, convenient way to generate these hashes without juggling separate tools.

What you can use it for

• Verify the integrity of artifacts (WASM, configs, datasets) before committing or deploying.

• Turn strings or hex into deterministic IDs for testing or scripting.

• Hash raw transaction/storage bytes when inspecting or debugging.

• Produce quick, non-cryptographic checksums during development loops.

Quick examples

# Verify a string or small blob (cryptographic)
pop hash sha2 256 "hello world"

# Hash raw hex bytes (great for tx/storage inspection)
pop hash keccak 256 0x68656c6c6f776f726c64

# Check a runtime you are about to deploy
pop hash blake2 256 /path/to/your/file.wasm

Tips

• Input can be plain text, 0x-prefixed hex, or a file path — Pop detects it for you.

• Choose the algorithm that fits the job:

  • SHA-2: dependable, broadly used.

  • BLAKE2: fast and secure (widely used in the Polkadot ecosystem).

  • Keccak: common in EVM tooling and ecosystems.

  • xxHash (TwoX): very fast, non-cryptographic for dev workflows.

• Pick an output length that matches your target (256-bit is a solid default; 512-bit for extra margin, 64/128-bit for speedier non-crypto checks).