Guides · Method · Updated 20 Oct 2026

Chain of custody for a collection, in plain words

For one card, chain of custody is the dated list of who held it and how it moved. For a collection it is the same list for every item at once, plus a count. Here is how to keep one.

The short answer

For one card, chain of custody is the dated list of who has held it, where, and how it moved between them. For a collection it is the same list kept for every item at once, plus a count: how many items, which ones, where each one is, and when the count was last made. A collection’s record is an inventory that moves with the items.

Keep it as one list with one line per item. Each line carries the item’s identity, its place and its last check. When part of the collection moves, the lines for those items move with it, and the count is made again when they come back.

How to keep one

  1. 01Number everything. A house number for each item, on the list and on the outside of the sleeve, top loader or slab’s outer bag, never on the card. The number is how the list and the shelf speak to each other.
  2. 02Identify each item. For a slab, the grader and the cert number, looked up on the grader’s page with the date. For a raw card, the year, set, card number and version. For each, one photograph front and back (see the photographing guide).
  3. 03Record the place. Binder, page and slot; box and row; vault and who holds it; or out with whom. A place is a fact on a date, and the date goes beside it.
  4. 04Count on a date. The whole collection, or a sample of it, checked against the list and written down with the date and who counted. A count that finds the list wrong is the point of counting; fix the list, and say what was fixed.
  5. 05Record every movement. Out to a show, to a grader, to a buyer, to a vault: the date, to whom, how it moved and the tracking. Back in: the date, and a check that the same cert and the same card came back.
  6. 06Keep the list in two places. One copy with the items and one elsewhere, both dated. A list that is only in a head or only on one phone is not a record.
  7. 07Record gaps as gaps. If nobody knows where an item was for a stretch, or a count could not be made, the list says so with the dates. A gap written down is honest; a gap filled in is not.

What this check does not prove

  • Ownership. Who holds an item and who owns it are often different parties. A good list records both and says which is which; it does not settle title.
  • What a gap hides. A list is only as complete as its entries. What happened between two entries is unknown until someone records it.
  • Condition. The list says where an item is. The photographs say how it looked on a date. Neither is a grading.
  • What the card is worth. A grade is not a price. The lookup says nothing about value, and neither does this guide.

Free cert check

Check a PSA, CGC, Beckett or SGC cert.

Enter the number from the label. You see what our watch holds on it and get a link to the grader’s own record. No account.

At the source

Each grader’s own cert lookup.

The grader’s page is its record of what it graded. Look the number up there yourself, not in a screenshot.

Selling a collection?

Brich House Estates.

Cards, memorabilia, watches and coins, from a single piece to a whole estate: every item verified and written down by Brich House. BSJ Ventures makes the offer or sells it for you.

For platforms

The independent record.

For vaults, pack and rip platforms, tokenized-card sites, auction houses and lenders: what you hold, checked against the record and written down, dated, by a company that never buys, sells or holds.