Substrate Signature Verifier (Polkadot{.js} compatible)

Verify messages signed with the PolkadotJS extension or any Substrate keypair.

Quick start

npm install
npm run build

Run with your file (recommended)

• Loose format (each line is [message,signature,ss58], no quotes required):

node dist/cli.js --file ./examples/sample_loose.txt > output/results.json

• Strict JSON format (array of triplets):

node dist/cli.js --file ./examples/sample_json.json > output/results.json

Notes

• Output: printed to stdout as JSON. Redirect to a file as shown above.
• Exit codes: 0 all valid, 2 some invalid, 1 errors (parse, missing file, etc.).
• Default: running with no args uses examples/sample_json.json.

Single check (optional)

node dist/cli.js <message> <signature> <ss58>

That’s it. Use the loose file for easy copy-paste, or JSON if you prefer strict formatting.