Powered by ELAI · A new layer for digital trust

Hardware-grade identity.
Already in your wallet.

The chip in your credit card is a tamper-resistant secure element — the same class of hardware that protects passports and government IDs. We talk to it directly. No new device. No password. Just touch the card you already carry.

Try the live PoC → Open Ledger Console

Install desktop helper · See how it works · Open standard · ISO 7816-4 · No telemetry

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Desktop helper

macOS today · Windows + Linux soon · talks PC/SC to any chip reader.

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Browser WebUSB

Chrome / Edge on Windows + Linux · direct CCID, no install required.

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Mobile NFC

iOS CoreNFC + Android IsoDep · tap the card to the back of the phone.

Three steps. No new hardware.

If you have a chip credit card, a debit card, or a government ID — you already have what you need.

01

Insert the chip

Any chip card with an ICC contact pad or NFC antenna works. Visa, Mastercard, Amex, Discover, PIV, CAC — they all speak the same protocol.

02

The chip responds

We send a SELECT and an INTERNAL AUTHENTICATE. Federal cards sign a fresh challenge with their on-chip private key. Civilian cards prove presence cryptographically.

03

You hold the receipt

The exchange becomes a portable ELAI hardware event — a small, verifiable record that this physical chip was present at this moment. No server stores your card data.

Civilian

Every wallet is a key ring.

Your debit card is the same secure element class that ships in government ID cards. We're the first identity layer that treats it that way.

Federal

CAC and PIV, on the open web.

For federal credentials we run a real ISO 7816-4 INTERNAL AUTHENTICATE and get back a signature. Same protocol your agency already accepts.

The wire we speak.

This is exactly what your card sees when you click "Verify." Open standard, no proprietary handshake.

# SELECT by AID — try federal first, then civilian EMV → 00 A4 04 00 0B A0 00 00 03 08 00 00 10 00 01 00 00 ← 6A 82 file not found (no PIV applet) → 00 A4 04 00 07 A0 00 00 00 03 10 10 00 ← 6F 32 84 07 A0 00 00 00 03 10 10 A5 27 50 0B ... 90 00 Visa Credit/Debit responded # INTERNAL AUTHENTICATE — sign this 8-byte challenge → 00 88 00 00 08 3B 9F 27 1A 6C 8D 04 E2 00 ← 6D 00 civilian EMV: not supported — recorded as presence-only event ← 87 80 4F 31 ... 90 00 PIV: 128-byte signature — recorded as identity event

Try it live →

Part of the ELAI ecosystem.

verifythecard is the hardware-attestation surface for a broader trust layer. Different surfaces, same cryptographic backbone.

PoC

chip-bind

The live proof-of-concept. Insert a chip card, run the protocol, hold the ELAI-signed receipt. Multi-card sessions and pair-references supported.

/chip-bind.html →

Production

ELAI Ledger

Bind chip cards as credentials to identities. Bind documents under those credentials. The production tool for building an attested identity ledger.

americafirst4us.com/ledger →

Verifier

4PDFs Verify

Drop any ELAI-signed PDF to check its signature in your browser. Free, no account, no upload. Verify chip-bind output here too.

4pdfs.com/verify.html →

For federal teams: CAC + PIV signing in the browser.

ISO 7816-4 INTERNAL AUTHENTICATE against the federal AIDs your agency already accepts. Open standard, no proprietary middleware, no smart-card client install on every workstation. Useful where identity needs to be proved outside controlled-network boundaries.

Federal inquiry →