Chain of custody
Every card has a history. Most of it gets lost.
Provenance is the record of everyone who has ever owned a card. Fine art has had it for centuries; trading cards almost never do. Every card MPE grades gets one — a public chain of custody that starts at the grading table and follows the slab through every trade, gift and sale after it.
What is card provenance?
Provenance is the documented history of who has owned an item. In the art world it's the paperwork tracing a painting back to the artist — and a painting with a gap in its provenance is worth dramatically less than one without. Trading cards work the same way, but almost nobody keeps the record. A slab changes hands five times at a show and arrives with no story attached beyond the grade on the label.
A chain of custody closes that gap. It ties one serial number to one unbroken sequence of owners, so the card in your hands can be traced back to the day it was graded without a single unexplained jump.
Why provenance matters
01 — Theft
It proves the card isn't stolen
A documented chain shows exactly where a card came from. A slab with no history and a seller who can't explain how they got it is the oldest red flag in the hobby.
02 — Tampering
It proves the slab wasn't swapped
Cracking a slab and re-sealing a lesser card inside is a real and profitable fraud. A record tied to one serial number the whole way through makes the swap visible.
03 — Value
It supports the price
A card with a known history and a record of what it has actually sold for is easier to price, easier to insure and easier to sell than one with no paper trail at all.
04 — Story
It's the part collectors care about
Who pulled it. Who traded it away and regretted it. A grade is a number; the chain of custody is the reason the card is interesting.
What's in an MPE chain-of-custody record
Every graded card gets a record whether it has changed hands or not. It's public, it's tied to the card's serial number, and collectors can't edit it.
Origin
Graded & encapsulated
The grading event itself: when MPE slabbed the card, and what grade it received.
Custody
Held in the vault
Where the physical card actually is. Insured storage, with the option to have it shipped to you at any time.
Hand-offs
Every trade, gift and sale
Each transfer, dated, with the display names of both collectors — never their email addresses. Sales show the price the card actually changed hands for.
Integrity
Authenticity fingerprint
A tamper-evident value derived from the card's own grading data, so a record can't be quietly moved onto a different card.
Real records you can read right now
These aren't examples we made up. Each one is a card that has genuinely changed hands on MPE, with the full chain of custody attached.
Provenance vs. a cert number
People often assume a grading company's cert number already covers this. It doesn't — it covers the first line of the record and then stops.
A cert number tells you
- The card was graded, and by whom
- What grade it received
- Which card is supposed to be in the slab
- Nothing at all about who has owned it since
A chain of custody adds
- Every owner the card has had, in order, with dates
- Whether each hand-off was a trade, a gift or a sale
- What it actually sold for, each time
- An append-only history collectors can't rewrite
Honest answer about the blockchain question
We get asked this constantly, so: no, MPE does not mint your card as an NFT and does not write its history to a public blockchain. What you get is an append-only ledger that collectors cannot edit, written in the same transaction that moves the card — so the record and the ownership can never disagree — plus a tamper-evident authenticity fingerprint derived from the card's own grading data.
That delivers the thing people actually want from a blockchain: a history you can check and nobody can quietly rewrite. It skips the parts nobody wants: gas fees, wallet recovery phrases, and a card that stops existing if a marketplace shuts down. If that ever changes, this page will say so.
Frequently asked questions
What is card provenance?
Provenance is the documented history of who has owned a card. In the art world it is the paperwork that traces a painting back to the artist. For trading cards it is the same idea: who graded the card, where it has been stored, and every collector who has held it since. A card with a complete chain of custody can be traced from the grader to the person holding it today, with no unexplained gaps.
Why does provenance matter for trading cards?
Three reasons. It proves the card is not stolen, because a documented chain shows where it came from. It proves the slab has not been cracked and swapped, because the record is tied to one serial number the whole way through. And it supports value, because a card with a known history and a record of what it has actually sold for is easier to price and easier to sell than one with no paper trail at all.
How do I find out who owned a card before me?
For an MPE-graded card, look up its serial number and open its chain-of-custody record. It lists every recorded hand-off with a date: trades, gifts and sales. Names are shown as the display names collectors chose, never their email addresses. If a card has never changed hands the record simply shows it is still with its original vault holder.
Is a grading company's cert number the same as provenance?
No. A cert number proves the card was graded and tells you what grade it received. It says nothing about who has owned the card since. Provenance is the layer on top: the same serial number, plus the ownership events that followed grading. Most graders stop at the cert. A provenance record continues past it.
Does MPE put card provenance on a blockchain?
No, and we would rather say so plainly. Each card carries a tamper-evident authenticity fingerprint derived from its own data, and every hand-off is written to an append-only ledger that collectors cannot edit. That gives you the practical benefit people want from a blockchain — a history you can check and nobody can quietly rewrite — without minting anything, without gas fees and without asking you to manage a crypto wallet.
Can a provenance record be faked or edited?
Collectors cannot edit it. Ownership events are written automatically when a trade, gift or sale completes, in the same transaction that moves the card, so the record and the ownership can never disagree. Each card also carries an authenticity fingerprint derived from its grading data, so a record cannot be quietly moved onto a different card.
How do I start a provenance record for my own cards?
Send the card to MPE for grading, or pull one from a virtual pack. From the moment it is slabbed and enters the vault, its record starts: graded and encapsulated by MPE, held in insured custody, then every trade or sale after that. You do not have to do anything to switch it on.
Start a record for your own cards
Grade a card, or rip a virtual pack. Either way the chain of custody starts the moment it's slabbed.