One-line clients

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Python (zero deps, stdlib only)

curl -O https://proofrail.ripitlabs.com/sdk/proofrail.py        # drop-in single file

from proofrail import ProofRail

pr = ProofRail("prk_your_key")
r  = pr.prove({"agent": "legal-team", "output_hash": "..."}, label="NDA draft")
print(r.receipt_url)        # public receipt anyone can verify
print(r.chains)             # ['xdc', 'base', 'xrpl', 'xlm']
print(pr.verify(r.proof_id).ok)

JavaScript / TypeScript (Node 18+ & browsers)

import { ProofRail } from "https://proofrail.ripitlabs.com/sdk/proofrail.js";

const pr = new ProofRail("prk_your_key");
const r  = await pr.prove({ agent: "legal-team", output_hash: "..." }, { label: "NDA draft" });
console.log(r.receipt_url, r.anchors);
console.log((await pr.verify(r.proof_id)).signature_valid);

Notes

• prove(payload, chains=[]) → sign-only, no gas.
• verify() is public — no key needed; anyone can check a proof.
• Raw files: /sdk/proofrail.py · /sdk/proofrail.js