How AuthProof Works
From content to cryptographic proof
AuthProof is a trust and proofing layer for digital content - registering SHA-256 integrity fingerprints, building chain-of-custody records, and producing shareable verification certificates that third parties can independently inspect.
Secure Content Ingestion
Submit any document or text into a secure, encrypted pipeline. AuthProof immediately computes a SHA-256 integrity fingerprint - the foundation of every proof record.
- Supports PDF, DOCX, TXT, PNG, and more
- SHA-256 hash computed at ingestion
- Protected in transit with modern TLS encryption
- Anonymous upload with account linking before processing
Registry Checks
AuthProof can check for duplicate registrations. These optional lookups are informational and accompany cryptographic integrity proof.
- Optional duplicate-registration lookups against prior records
- Duplicate-registration advisories are informational only
- Registry checks do not assess authorship or determine outcomes
- Integrity proof remains primary
Optional content analysis signals are informational and probabilistic. They are not evidence of authorship and are not used to make decisions about individuals.
Verification Report & Signing
Generate a tamper-evident verification report with a full chain-of-custody timeline. Optionally apply your Ed25519 signing key to cryptographically bind the record to your account.
- SHA-256 content integrity hash
- Optional Ed25519 digital signature
- Chain-of-custody audit timeline
- Summary and newsroom report formats
- Exportable signed PDF artifact
Publish & Share Proof
Share a public verification certificate anyone can inspect, embed a trust badge on your site, or distribute the signed PDF - giving readers an independently verifiable proof record.
- Public verification certificates with integrity status
- Embeddable trust badges
- Print-ready verification pages
- Revocable public links under your control
Product demo
See how proof records work
Upload a document, register its SHA-256 integrity fingerprint, and create a tamper-evident record with chain of custody and optional signatures. and share an independent verification certificate.
Sample verification report
Preview a signed PDF report with an integrity hash, chain-of-custody timeline, optional signature details, and informational duplicate-registration advisories when applicable.
Enterprise-grade trust infrastructure
Built for organizations that require verifiable integrity proof, audit trails, and transparent verification - across journalism, education, and enterprise workflows.
Cryptographic Integrity Proof
Every record includes a SHA-256 content fingerprint and optional Ed25519 signature - providing tamper-evident evidence of what was submitted and when.
Chain-of-Custody Timeline
Full audit trail from upload through analysis, signing, and report generation - designed for editorial, and compliance review.
Transparent Proof Scope
Every public verification certificate clearly states what the record confirms - and what it does not - so recipients can evaluate proof with confidence.
You Control Your Data
Verification records are stored securely under your account. You can access, export, and delete your content and reports at any time.