Hashproof SDKs

npm install @hashproof/sdk
# or
pnpm add @hashproof/sdk

Sign and verify, end-to-end:

import { Hashproof } from '@hashproof/sdk';

const client = new Hashproof({ apiKey: process.env.HASHPROOF_API_KEY! });

// Sign
const file = await Bun.file('./photo.jpg').arrayBuffer();
const signed = await client.sign(new Blob([file]), {
  title: 'Field photo, 2026',
});
console.log(signed.manifestId);

// Verify
const v = await client.verify(new Blob([file]));
if (v.trustStatus !== 'trusted') {
  throw new Error('Untrusted provenance');
}

pip install hashproof
# or
poetry add hashproof

from hashproof import Hashproof
import asyncio

async def main() -> None:
    client = Hashproof(api_key="hpsk_live_xxxxx")

    # Sign
    with open("./photo.jpg", "rb") as f:
        signed = await client.sign(f.read(), title="Field photo, 2026")
    print(signed.manifest_id)

    # Verify
    with open("./photo.jpg", "rb") as f:
        v = await client.verify(f.read())
    if v.trust_status != "trusted":
        raise RuntimeError("Untrusted provenance")

asyncio.run(main())

CLI

One-shot verification of any file from the command line. No install step if you have npx.

npx hashproof verify ./photo.jpg
# => { hasProvenance: true, source: 'embedded', trustStatus: 'trusted' }

# Or globally:
npm install -g hashproof
hashproof sign ./photo.jpg --api-key "$HASHPROOF_API_KEY"