Stop Invoice Fraud with
Cryptographic Verification

Attestiv provides a verified, encrypted registry of vendor banking details and cryptographic invoice signing. Verify any invoice or payment instruction in seconds with zero-knowledge security.

Join the Beta See How It Works

Coming Soon

ERP Integrations

ERP Integrations with your existing business systems. Issue Signed or Verify Signed invoices automatically.

NetSuite

SAP

Oracle

QuickBooks

Odoo

How Attestiv Works

Three integrated systems work together to prevent invoice and payment fraud at every step.

1 Invoice Signing

Upload

Fingerprint

Seal

Protected

Vendor uploads their invoice

Unique digital ID created

Tamper-proof seal applied

Invoice verified & secure

2 Invoice Verification

Receive

Upload

Confirmed

Get invoice via email

Drop file to verify

Find original record

Vendor identity verified

3 Secure Banking Registry

Lock Data

Private Vault

Authorize

Locked Before Sending

Data encrypted on your device

We Can't See It

Stored securely, unreadable to us

You Control Access

Share only with who you choose

Verification Methods

Multiple ways to verify invoices and banking details, designed for any workflow.

Web Portal

Simple drag-and-drop interface for anyone to verify invoices instantly. No account required.

Upload PDF, PNG, JPEG, TIFF
Instant verification result
View vendor details & history

REST API

Integrate verification directly into your ERP, accounting, or payment systems.

JWT authentication
Verify by file or hash
Webhook notifications

AI Integration (MCP)

Model Context Protocol server enables AI assistants to verify invoices automatically.

Claude, GPT compatible
Automated verification
Natural language queries

Security Architecture

Built with cryptographic best practices. Your data is protected by the same algorithms used by secure messaging apps and government systems.

How We Keep You Safe

Tamper-Proof Seals

Every invoice gets a unique digital seal that proves it came from the vendor. If even one character is changed, the seal breaks.

Military-Grade Encryption

Banking details are locked with the same encryption used by governments and secure messaging apps - unbreakable by modern computers.

Secure Sharing

Vendors can share access with customers without ever exposing their actual passwords or secret keys to anyone.

Strong Password Protection

Even if an attacker steals our database, they can't crack your passwords - our protection makes guessing attacks impossibly slow.

Our Security Promise

✓ We Can't See Your Data

Your banking details are locked before they ever reach us. We literally cannot read your information, even if someone forced us to try.

✓ Your Keys Stay With You

Secret keys are created on your own device and never leave it. We only see the part needed to verify signatures, not the part needed to create them.

✓ Instant Damage Control

If a key is ever compromised, you can disable it immediately. Once revoked, that key can never be used to sign new invoices again.

✓ Complete Activity Records

Every verification is logged with timestamps. You always know who checked which invoices and when.

✓ No Shortcuts for Hackers

We use special techniques that make it impossible for attackers to learn anything from how fast our systems respond.

Your Data is Protected at Every Step

Simple API Integration

Integrate invoice verification into your systems with just a few lines of code.

Sign an Invoice

curl -X POST https://attestiv.io/api/v1/invoices/sign/ \
  -H "Authorization: Bearer $TOKEN" \
  -F "file=@invoice.pdf" \
  -F "key_id=sk_abc123" \
  -F "metadata={\"invoice_number\": \"INV-001\"}"

# Response
{
  "id": "inv_xyz789",
  "file_hash": "sha256:a1b2c3...",
  "signature": "ed25519:...",
  "signed_at": "2026-01-19T12:00:00Z",
  "verify_url": "https://attestiv.io/v/inv_xyz789"
}

Verify an Invoice

curl -X POST https://attestiv.io/api/v1/verify/invoice/ \
  -F "file=@invoice.pdf"

# Response
{
  "verified": true,
  "vendor": {
    "name": "Acme Corp",
    "domain": "acme.com",
    "verified_since": "2025-03-15"
  },
  "signed_at": "2026-01-19T12:00:00Z",
  "key_status": "valid"
}

Frequently Asked Questions

Common questions about invoice verification and banking security.

How does Attestiv prevent invoice fraud?

Think of it like a tamper-proof wax seal on a letter. When a vendor signs an invoice, we create a unique digital fingerprint of the file and attach the vendor's seal. Anyone can check if the seal is genuine and matches the vendor, confirming the invoice is authentic and hasn't been modified.

What happens if an invoice is modified after signing?

Any modification - even changing a single character or pixel - completely changes the file's fingerprint. The verification will immediately fail and flag the invoice as potentially tampered with. Fraudsters cannot hide their changes.

Can Attestiv access my banking details?

No, absolutely not. Your banking details are locked on your own device before they ever reach us. We store what looks like scrambled nonsense - we physically cannot read it. Only people you specifically authorize can unlock and view your information.

What if a vendor's signing key is stolen?

Vendors can instantly disable a stolen key through our dashboard. Once disabled, any verification will show a warning that the key has been revoked. Invoices signed before the key was stolen remain valid, but the attacker cannot create new fake invoices.

How do I connect Attestiv to my business software?

We offer several options: an API that your accounting or ERP software can call directly, a web portal where anyone can verify invoices manually, and AI assistant integrations so tools like Claude or ChatGPT can verify invoices for you automatically.

What file types can I verify?

We support all common invoice formats: PDF documents, and images (PNG, JPEG, TIFF) up to 10MB. If you can email it as an invoice, you can verify it with Attestiv.

Stop Invoice Fraud with Cryptographic Verification