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Every card has a fingerprint.

Give it its owndigital-card-twin

Digital Card Twin

The first protocol that transforms the unique physical identity of a card into inviolable proof of ownership anchored publicly.

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Market Flaws Resolved.

Today, graded card security relies solely on plastic. We link the physical authenticity of the card to a tamper-proof digital certificate.

Counterfeit Graded Cards

Plastic cases and labels are easily faked. But a card's unique physical texture never lies.

With DCT:

Microscopic fiber fingerprinting guarantees the authenticity of the card inside.

Opaque Transactions

There is no way to verify who truly owns a card before buying. Scams are common.

With DCT:

An unforgeable digital title deed instantly proves who the legitimate owner is.

Fencing Stolen Cards

Once stolen, high-value cards circulate and resell freely across marketplaces without any warnings.

With DCT:

Public 'Stolen' status: the certificate is frozen, making official resale impossible.

New

Make your voice count

Help us fine-tune our technology before our upcoming meetings with grading industry leaders.

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STEP 01

GRADATION

Collector Sends Card

A collector ships their card to the grading company.

STEP 02

GRADATION

Grading & Authentication

Experts validate authenticity, assess condition, and assign the official grade on the slab.

STEP 02+

PARTNER

Grading partners

Grading companies submit certification data to DCT.

STEP 03

DCT

Fingerprint Scan

Our system captures the card's physical fingerprint of that specific card.

STEP 04

DCT

Ownership Record Built

Card fingerprint details are stored into a secure, tamper-proof record.

STEP 05

DCT

Record Signed & Issued

A Dynamic Authenticity Certificate is minted and linked to the physical card's unique fingerprint.

STEP 06

GRADATION

Card Returned to Collector

The slabbed card goes back to the collector with its new DCT certificate.

STEP 07

DCT

Anyone Can Verify

Buyers, sellers, and marketplaces instantly verify grade, current owner, theft status, and authenticity.

Seller to buyer, end-to-end.

Payment happens on your preferred marketplace rails while title transfer is secured in DCT.

01

List

Seller posts the card with DCT proof and marketplace link. Adding the link is a publicly recorded action — the URL is stored in system state, publicly visible.

Seller listing with DCT certificate

02

Lock

Seller locks the title for the buyer.

Seller transfer initialization

03

Ship

Card ships while the title stays reserved.

Buyer receives reserved title notification

04

Inspect

Buyer checks the card and confirms receipt.

Buyer visual inspection with master scan

05

Transfer

Ownership moves atomically to the buyer. The transfer is recorded and auditable, completely transparent.

Atomic ownership transfer completed

How stolen reporting works.

Owners can report a stolen card from the digital vault. The card's certificate is frozen with a public 'Stolen' status, making official resale impossible.

01

Owner reports from the digital vault

One click from the digital vault marks the digital-card-twin as stolen.

Owner collection card with reported stolen state

02

Public search shows warning

Your card is now marked as stolen. Any future verification will show a stolen alert for buyers and grading companies.

•Stolen alert visible on the public certificate page.

•Buyers can check the stolen status before purchasing.

•Any new certification submission will fire a duplicate alert for graders.

Public certificate page showing reported stolen badge

Feature Deep-Scan

Beyond plastic: the unique physical identity.

A certificate number can be copied. The physical identity of a card cannot.

AI Fingerprinting

01/04

AI fingerprinting

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

  • Each card carries physical traits that are unique and impossible to reproduce.
  • Our analysis captures what makes this specific card one-of-a-kind.
  • The resulting signature is verified by our proprietary engine.

Result: a Integrity Hash is generated and anchored publicly. If the card is removed or substituted, the signature no longer matches and the Twin becomes invalid.

Comparison Evidence

FINGERPRINT_MATCHING
Standard slab scan

Slabs are vulnerable.

Microscopic x200 scan of physical card structure

the card has a unique fingerprint.

API Trust Response

{
            "status": "Verified",
            "digital_card_twin_id": "BT-7729-X",
            "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 your digital vault: the STOLEN transaction is anchored in seconds and propagated in real time to partner explorers and marketplaces.
  • Ownership title freeze: the ownership transfer is locked by the system — no intermediary can override it.
  • Public auditability: the stolen status and all subsequent actions remain permanently visible and auditable.

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

Comparison Evidence

PROTOCOL_LOCK
Application proof surface

Kill-Switch Protocol

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

Certified Ownership

03/04

Marketplace + Atomic Title Settlement

The marketplace handles payment and shipping. DCT secures ownership transfer with transaction lock, buyer-confirmed release, and dispute-aware safeguards.

  • Buyer forgets to confirm: time-lock auto-transfer after 10 days if no dispute is opened.
  • Seller unresponsive: buyer can submit delivery proof + received-card photo; transfer can be force-completed after 48h review.
  • Buyer reports mismatch: transfer is frozen in dispute escrow until evidence resolution.

Result: ownership either settles atomically or remains safely escrowed while dispute evidence is processed.

Comparison Evidence

ATOMIC_TRANSFER
Application proof surface

Safety Nets for Edge Cases

Time-lock fallback, evidence-based arbitration, and dispute freeze protect both seller and buyer without breaking chain-of-title integrity.

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 verification to confirm the seller controls the digital title.

Comparison Evidence

REAL-TIME_VERIFICATION
Application proof surface

Instant Public Verification

The check surface validates ownership live and returns a tamper-proof trust signal in seconds.

Start certificate verificationSeal my collection

FAQ for first-time users

Short answers for collectors new to digital ownership certificates.

Do I need any technical knowledge to use this app?

No. You can search a certificate number and read a simple authenticity and ownership result without creating any account.

What is the collection space?

It is your personal area to manage your digital-card-twin certificates, generate proof links, and report stolen cards.

How do I verify a card before buying?

Use the verification form with the certification number. You get card details, owner signal, and anti-theft status on one page.

How is the record kept secure?

It uses cryptographic anchoring to create an immutable record that no one can secretly change. Everyone sees the same ownership history.

Product Roadmap

From protocol to industry standard.

Our path to eliminating fraud in the TCG grading market.

CompleteNow

Protocol core is live in the codebase

  • Secure registry, verification engine, and grading company registry
  • Public certificate, share, and check flows in the demo app
  • Vault flow with ownership views and stolen reporting
  • Integration and infrastructure docs already in the repo
Thinking PeriodPilot

Partner thinking period and open co-design

  • Dedicated sessions for partners to answer, think, and brainstorm with us
  • Roadmap priorities refined with partner feedback and edge cases
  • Shared problem framing before production commitments
  • Decisions logged with clear follow-up actions and owners
In ProgressBuild

Partner operations are being hardened

  • Lab partner console with gated access and submission flow
  • Webhooks, batch-submit, and job tracking endpoints
  • Transparent user actions in Vault: report stolen, set marketplace link, initialize lock, confirm receipt, and open dispute
  • All these user actions are permanently recorded, publicly auditable, and run through the secure frictionless flow in the demo
  • Assisted submit and verify flows wired in the demo
  • Operational rollout still depends on environment and partner setup
UpcomingNext

Integration breadth and production hardening

  • Multi-grader operational wiring for partner onboarding at scale
  • Broader SDK, indexer, and partner integration surface
  • Hardening of operator tooling and deployment paths
  • Cleaner source-of-truth alignment between product docs and UI
PlannedLater

Lifecycle and protocol expansion

  • Support for grade.updated and grade.voided lifecycle actions
  • Complete cryptographic transaction-signing path
  • Governance, interoperability, and larger ecosystem rollout
  • No volume or partnership milestone should move here without proof
Business Contact

Contact the team

Questions about integrations, certificate issuance, or commercial deployment? Reach out directly.

Grading companiesMarketplacesStrategic partners

We reply to grading companies, partners, and collectors evaluating the protocol for production use.

Emailengineering@digital-card-twin.com

Typical topics

API and issuance integration
Pilot launch planning
Operational and compliance questions
Write to us