proofofauthenticity

ProofOfAuthenticity by CHECKHC - Blockchain timestamping with AI detection and C2PA content authenticity.

Package Information

Downloads: 53 weekly / 114 monthly
Latest Version: 1.0.8
Author: CHECKHC

Available Nodes

ProofOfAuthenticity by CHECKHC icon
ProofOfAuthenticity by CHECKHC
ProofOfAuthenticity by CHECKHC - Blockchain timestamping with AI detection and C2PA authenticity. Learn more: https://www.checkhc.net

Documentation

ProofOfAuthenticity

npm version
License: MIT

Developed by CHECKHC - Blockchain content certification experts

Overview

ProofOfAuthenticity is an n8n community node that provides blockchain timestamping with optional AI authenticity detection and C2PA content authenticity metadata.

Features

  • Blockchain Timestamping - SHA-256 hash certified on Solana blockchain
  • AI Authenticity Detection - Detect AI-generated vs human-created content
  • C2PA Integration - Content Authenticity Initiative standard metadata

Operations

Create Certificate

Certify content with blockchain timestamp.

Parameter Description
Input Type URL or Base64
File URL/Data The file to certify
Title Certificate title (required)
Author Author name (optional)
Description Description (optional)
Certification Mode Simple or AI + C2PA

Download C2PA File

Download the C2PA signed image file as binary output. Use this after creating a certificate with AI + C2PA mode.

Parameter Description
C2PA Download URL The c2pa_download_url returned by Create Certificate (AI mode)
Binary Property Name Output binary property name (default: c2pa_file)

Output: Binary file with C2PA metadata embedded.

Download PDF Certificate

Download the PDF certificate as binary output.

Parameter Description
IV Storage ID The iv_storageid returned by Create Certificate
Binary Property Name Output binary property name (default: pdf_certificate)

Output: PDF document with certification details.

List Certificates

List blockchain certificates with optional filters (hash, filename, signature).

Installation

Via n8n Community Nodes

  1. Go to Settings > Community Nodes
  2. Select Install
  3. Enter n8n-nodes-proofofauthenticity
  4. Click Install

Manual Installation

cd ~/.n8n/nodes
yarn add n8n-nodes-proofofauthenticity

Configuration

  1. Create a credential of type ProofOfAuthenticity API
  2. Enter your DigiCryptoStore instance URL
  3. Enter your API Key (Settings > API Keys)

Support

License

MIT

Powered by CHECKHC

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