Setup & Installation
Or with the ClawHub CLI, for registry-managed skill folders outside a full OpenClaw workspace:
What This Skill Does
xProof anchors text, hashes, files, and agent decisions to the MultiversX blockchain as tamper-proof certificates. Each certification costs $0.05 with 6-second finality. Supports API key auth or x402 micropayment using USDC on Base, with no account required for the latter.
Unlike traditional notarization or hash registries, xProof offers both authenticated and accountless certification paths with sub-10-second on-chain finality at a fixed per-cert price.
When to use it
- Certifying an AI agent's deployment decision before it executes
- Anchoring a generated report before sharing with stakeholders
- Building an immutable audit trail for autonomous pipeline outputs
- Proving a document existed before a specific date for compliance
- Batch-certifying contract or research outputs before publication
Example Workflow
Here's how your AI assistant might use this skill in practice.
User asks: certify the agent's production deployment decision
- 1Sends decision text to POST https://xproof.app/api/proof with XPROOF_API_KEY
- 2Receives certificate ID, SHA-256 hash, and transaction hash in response
- 3Extracts verifyUrl pointing to the permanent on-chain record
- 4Optionally polls GET https://xproof.app/api/proof/{cert_id} to confirm status is confirmed
A verifiable certificate URL (e.g. https://xproof.app/verify/cert_abc123) and a MultiversX explorer transaction link proving the decision was anchored at that timestamp
Requirements
Accounts, API keys, or tools you or your AI assistant may need to set up while using this skill.