digital-card-twin
Vault
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digital-card-twin

The trust layer for graded cards.Fast lookup, immutable proof.

digital-card-twin maps a grading certificate to an on-chain NFT record. Enter a cert number to validate ownership, grading metadata, and provenance from a single public source of truth.

STEP 01

GRADATION

Customer Sends Card

A collector ships the card to an authorized grading company for inspection.

STEP 02

GRADATION

Grading & Authentication

Experts validate authenticity, evaluate condition, and assign the official grade.

STEP 03

DCT

Fingerprint Capture

Microscopic texture and print patterns are scanned to generate a unique physical fingerprint.

STEP 04

DCT

Digital Record Build

Certification data, metadata, and fingerprint hash are assembled into a signed payload.

STEP 05

DCT

Oracle Signing & Mint

The oracle signs the payload and mints the ERC-721 digital-card-twin certificate on Base.

STEP 06

GRADATION

Card Returned to Owner

The graded slab is returned while the on-chain twin anchors ownership and provenance.

STEP 07

DCT

Public Verification

Any buyer or marketplace can verify grade, ownership, and anti-theft status in seconds.

How it works, in real time.

The seller opens a live session from the vault, confirms ownership on mobile, and the buyer sees the trust signal update instantly.

01

Seller starts from the vault

From the collection vault, the owner generates a short-lived verification session for one specific digital-card-twin.

Seller vault list on mobile

02

Mobile confirmation

The seller scans or opens the session link, then approves the live ownership challenge with wallet biometrics or passkey.

Seller mobile confirmation screen

03

Buyer sees instant proof

The public check page refreshes with a verified ownership signal, so the buyer can validate the title before paying.

Verification completed on mobile

How stolen reporting works.

Owners can report a stolen card from the vault, and buyers instantly see the stolen warning on public verification.

01

Owner reports from the vault

From the owner vault card, one click marks the digital-card-twin as reported stolen and anchors the status on-chain.

Owner vault card with reported stolen state

02

Public search shows warning

Anyone searching the certification page immediately sees a reported stolen warning badge before purchase.

Public certificate page showing reported stolen badge

Feature Deep-Scan

Beyond plastic: molecular DNA.

A certificate number can be copied. The molecular structure of matter cannot.

AI Fingerprinting

01/04

AI fingerprinting

Our technology does not read a label. It analyzes the card's physical biometrics.

  • Print rosettes: each press pass creates a one-of-one ink-point constellation.
  • Fibrous structure: cellulose arrangement at micron scale acts like a natural fingerprint.
  • Micro cutting defects: invisible industrial blade artifacts left during manufacturing.

Result: a 256-bit Integrity Hash is generated and anchored on Base. If the card is removed or substituted, DNA no longer matches and the Twin becomes invalid.

Comparison Evidence

CV_ALGORITHM: LBP_TEXTURE_MAPPING
Standard slab scan

Standard view: vulnerable to slab counterfeiting.

Microscopic x200 scan of fibers and rosettes

digital-card-twin view: unique and unforgeable molecular fingerprint.

API Trust Response

{
  "status": "Verified",
  "digital_card_twin_id": "BT-7729-X",
  "dna_match_confidence": "99.98%",
  "blockchain_anchor": "Base-Mainnet",
  "integrity_check": "PASS",
  "anti_theft_status": "Secure"
}

Kill-Switch

02/04

Kill-Switch Protocol: make stolen cards unsellable.

A stolen card has no value when it can no longer be authenticated.

  • Instant reporting from wallet: STOLEN status propagates in real time to partner explorers and marketplaces.
  • Ownership title freeze: digital-card-twin NFT transfer is blocked, so legal title stays with you on-chain.
  • Scan alert: if a receiver tries to verify with the app, a recovery alert can include scan location data.

Irreversible sentence: a graded card without a clean digital-card-twin can lose up to 90% of market value.

Comparison Evidence

BLOCKCHAIN: SMART_CONTRACT_LOCK
Application proof surface

Kill-Switch Protocol

STATUS: STOLEN / BLACKLISTED. The protocol removes the thief's economic incentive.

Certified Ownership

03/04

Trustless P2P Trading.

No more mailing and praying. Funds are locked in escrow and the digital-card-twin title transfers only when payment is secured, eliminating counterparty risk.

Comparison Evidence

PROTOCOL: ERC-4337_ATOMIC_SWAP
Application proof surface

Atomic Ownership Transfer

Payment and title move in one atomic state transition, guaranteeing all-or-nothing settlement.

Trust DCT not Humans

04/04

Trust, but Verify. Instantly.

Generate a dynamic QR from your vault. When scanned, the protocol performs a real-time handshake with Base to confirm the seller controls the digital title.

Comparison Evidence

NETWORK: REAL-TIME_HANDSHAKE_V1
Application proof surface

Instant Public Verification

The check surface validates ownership live and returns a cryptographic trust signal in seconds.

Start DNA verificationSeal my collection
Product Roadmap

From protocol to industry standard.

Our path to eliminating fraud in the TCG grading market.

CompleteQ1 2026

Foundation

  • ERC-721 digital-card-twin standard
  • Smart contract architecture & audit
  • Grading API integration spec
  • Base Sepolia testnet deployment
In ProgressQ2 2026

Pilot Launch

  • Base mainnet deployment
  • PSA grader integration
  • First 1,000 digital-card-twins minted
  • On-chain theft-reporting live
UpcomingQ3 2026

Scale

  • BGS & CGC grader integrations
  • Open SDK & protocol release
  • Marketplace & wallet support
  • 10,000+ certified cards
PlannedQ4 2026

Industry Standard

  • Protocol governance (DAO)
  • Cross-chain bridge
  • 100,000+ digital-card-twins
  • Enterprise grading partnerships