Field-Proven Silicon Since 2020 · Crowdfunding Launch

Your Keys.
Your Silicon.
Forever.

The first fully sovereign dual-interface hardware wallet built on architecture already securing real-world assets since 2020. Custom crypto silicon. Zero cloud. Zero servers. Post-quantum ready. If we disappear tomorrow, your cards keep working — forever.

Early bird pricing · Secure backup packs · Proven technology, not a prototype

Vexrium Sovereign Dual-Interface Hardware Wallet – Custom Silicon, Contact + NFC

Why Most Hardware Wallets Still Fail You

Traditional wallets still depend on companies, servers, or limited architectures. Vexrium removes every intermediary — with technology already proven in production.

Aspect Traditional Hardware Wallets Vexrium
Server Dependency App and company infrastructure required Zero. Direct APDU to card + blockchain nodes
Chip Architecture Generic or bank-grade secure elements Custom silicon + dedicated SECP256k1 coprocessor
Production History Varies widely In production since 2020 (gold tokenization)
Randomness Often PRNG or single source FIPS-140-2 TRNG from physical noise
Interfaces Primarily NFC or USB only Native NFC (iOS/Android) + ISO7816 Contact
Company Longevity Dependent on support & updates Works eternally. Zero server dependency.
Seed Phrase Risk Mandatory 24-word recovery phrase displayed on screen during setup. Recent supply-chain attacks used hidden cellular implants to steal the phrase directly from the display. Optional. Secure multi-card backup packs. Keys stay on silicon. No mandatory phrase shown on a screen that can be intercepted.
Post-Quantum Not supported / classical only ML-DSA (Dilithium, NIST FIPS 204) ready
The Hidden Risk

Why Displaying a Recovery Phrase Is Dangerous

Many hardware wallets force you to write a 24-word phrase shown on their screen during setup. Recent sophisticated attacks have used hidden cellular implants inside genuine devices to read that phrase directly from the display and exfiltrate it over mobile networks — without ever touching the secure element.

Vexrium offers optional seedless multi-card backup packs so keys never need to leave the silicon or appear on a screen.

Card-First Design

Simplicity Without Compromise

  • • Credit-card form factor — fits in any wallet, no cables
  • • Optional seedless multi-card backup (keys never leave the chip)
  • • Dual interface: NFC for phone + Contact for professional use
  • • Keys generated and stored only on custom silicon
  • • Zero servers. Works forever if the company disappears
  • • Post-quantum ready (ML-DSA / Dilithium)
  • • Architecture in production since 2020

Hardware-First Cryptography

Not a repurposed bank chip. A purpose-built crypto silicon with a dedicated hardware coprocessor for the operations that matter — already field-proven.

Custom Crypto Silicon

32-bit RISC microprocessor + dedicated hardware cryptographic coprocessor. Native, ultra-fast SECP256k1 and SHA-256 / SHA3-256 operations — no software bottlenecks.

Post-Quantum Ready

Support for quantum-resistant algorithms including ML-DSA (Dilithium, NIST FIPS 204). Future-proof your keys against quantum computers — today.

FIPS-140-2 TRNG

True Random Number Generator certified to FIPS-140-2. Entropy drawn from physical noise — not mathematical pseudo-randomness. Maximum unpredictability for key generation.

Dual Interface

Native NFC for seamless iOS & Android use, plus ISO7816 contact interface for professional terminals and air-gapped or high-security environments.

16 Secure Key Pairs

Up to 16 key pairs stored directly on-chip. Protected by 4-digit PIN and 8-digit PUK with hardware anti-brute-force lockout. No seed phrase complexity required for backups.

Open-Source Companion

The mobile and desktop apps communicate exclusively via local APDU commands. Full source code published. No hidden telemetry, no forced updates, no remote kill switches. You own the stack.

Not a Prototype

Proven in Production Since 2020

The argument that Vexrium is “new and untested” does not hold. The architecture is already mature.

The same custom crypto silicon and dual-interface design powering Vexrium has been in real-world production since 2020, securing physical gold tokenization on the Multichain-Bitcoin blockchain.

These cards have operated for years in a high-value asset environment where reliability, security, and long-term availability are non-negotiable. Demanding financial actors have already validated the architecture under real conditions.

Your Vexrium cards are not a recent crowdfunding prototype. They are the consumer expression of a secure, mature, field-proven technology stack.

True Ownership.
Zero Intermediaries.

Vexrium was designed for the day we no longer exist. Your keys never leave the silicon. The companion app talks directly to your card and to blockchain nodes — never through our servers.

  • ✓ Pair-to-peer APDU commands only. No cloud handshake required.
  • ✓ If Vexrium shuts down, your cards and open-source software continue to function indefinitely.
  • ✓ 100% self-custody. No recovery service, no company-controlled backup, no intermediary can ever access your keys.
  • ✓ Secure multi-card backup packs available — without exposing a traditional seed phrase.
  • ✓ Architecture already proven in production since 2020.
Vexrium card – Sovereign hardware detail
∞

Company-Proof Design

Most hardware wallets become paperweights when the company stops supporting them. Vexrium’s architecture guarantees that your sovereignty is permanent.

Frequently Asked Questions

Is the technology new / untested? ↓

No. The same custom silicon and dual-interface architecture has been in production since 2020, securing physical gold tokenization on the Multichain-Bitcoin blockchain. It is field-proven in a high-value asset environment.

How does Vexrium protect against recovery phrase theft? ↓

Vexrium offers optional seedless multi-card backup packs. Keys are generated and stay on the silicon. You are never forced to display a 24-word recovery phrase on a screen that could be intercepted by a supply-chain implant.

What happens if Vexrium disappears? ↓

Your cards continue to work indefinitely. The companion app communicates directly with the card via local APDU commands and with blockchain nodes. There is zero server dependency.

Does it support post-quantum cryptography? ↓

Yes. Vexrium supports ML-DSA (Dilithium, NIST FIPS 204), a standardized post-quantum signature algorithm.

Join the VIP Waitlist

Get exclusive early-bird pricing, limited backup packs, and priority access to the Indiegogo campaign. Secure proven silicon before public launch.

No spam. Early access & launch pricing only. Or preorder directly on Indiegogo.