Standard Feature

Store Tags

Cryptographically verified proof of asset existence.

Attach an NFC Store Tag to any physical asset. Tap with your phone to create an immutable, timestamped, cryptographically signed verification record. No special equipment. No room for fraud.

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Store Tags

How it works

Three steps to verified assets

1

Order your tags

Choose a pack size and we ship NFC Store Tags to your door. Each tag is pre-provisioned with a unique cryptographic identity before it leaves our facility.

2

Pair to your assets

Tap a tag with your phone to claim it to your account, then assign it to any asset in your vault. The tag is permanently linked to that asset.

3

Tap to verify

Whenever you need to confirm an asset exists and is where it should be, tap the tag. Storehouses cryptographically verifies the tag is authentic, logs the event, and updates your verification status.

Hardware

Enterprise-grade security

Not commodity NFC stickers. Cryptographic hardware backed by server-side verification.

Cryptographic Authentication

Each tag generates a unique, one-time cryptographic signature on every scan using AES-128 CMAC. No two scans are the same. Cloned tags are detected instantly.

Anti-Cloning Protection

A rolling counter increments with every tap. If a cloned tag is scanned, the counter mismatch is detected server-side and the tag is immediately flagged.

Tamper Detection

Premium StatusDetect tags include a hardware tamper loop that detects if a seal has been broken. The tamper state is cryptographically signed and cannot be spoofed.

Verification History

Every scan creates an immutable, timestamped record with method, confidence level, location, and device. Build a complete chain of custody for insurance, estate planning, or compliance.

Works With Your Phone

No special equipment needed. Tap a Store Tag with any NFC-enabled phone. The verification happens server-side in milliseconds.

Risk Scoring

Each verification event receives a numeric risk score based on cryptographic validity, location consistency, device history, and anomaly detection. Partners and insurers can set their own confidence thresholds.

Use cases

Built for every stakeholder

Individual Collectors

  • Verify precious metals are in your safe before insurance renewal
  • Prove possession of high-value watches or jewelry to a lender
  • Build a verification history for estate planning
  • Detect if anyone has accessed your stored assets

Advisory Firms

  • Verify client holdings during portfolio reviews
  • Provide auditable proof of asset existence to compliance
  • Automate verification reminders for stale assets
  • Integrate verification status into Addepar, Salesforce, or custom reports

Insurers & Appraisers

  • Require cryptographic verification before policy renewal
  • Set minimum confidence thresholds for coverage
  • Access verification history through the Storehouses API
  • Detect potential fraud via anomaly flags and risk scores

Tag tiers

Two tag tiers

Standard

NXP NTAG 424 DNA

  • AES-128 cryptographic authentication
  • Rolling counter + one-time CMAC per scan
  • Clone detection (counter rollback / CMAC failure)
  • Server-side verification in milliseconds
  • Durable adhesive sticker form factor

Premium

Tamper-Evident

NXP NTAG 224 DNA StatusDetect

  • Everything in Standard
  • Hardware tamper loop detects broken seals
  • Tamper state cryptographically signed
  • Ideal for sealed containers, safes, vaults
  • Cannot be spoofed or reset

Questions

Frequently Asked Questions

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Verify your assets with confidence

Store Tags are included with Storehouses Pro. Order your first pack and start building a verified chain of custody for your physical holdings.

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Per-tag AES keys are encrypted at rest and never leave the server.