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Reclaimed wood certificate of authenticity — what should it contain?

Q: Reclaimed wood certificate of authenticity — what should it contain?

A reclaimed-wood certificate of authenticity should identify the specific piece, its source structure, species, and dimensions, and carry a custody trail a buyer can verify independently — plus a plain statement of what it does and doesn't claim. A certificate that can only be taken on the seller's word is letterhead, not proof.

Short answer: A useful certificate names the specific piece (not just "barn wood"), where it came from, its species and dimensions, and a verifiable custody trail — and it's honest about what it does and doesn't prove. If a buyer can't check it independently, it's letterhead, not a certificate.

"Certificate of authenticity" is a phrase anyone can print. The useful question isn't whether a piece comes with one — it's whether the certificate says anything a buyer can actually check. Most don't. They're a signature on nice paper.

What a real one names

A certificate that's worth the paper identifies the individual timber, not the category. At minimum:

The piece — a stable ID for this specific member, so the certificate can't be quietly moved to a different board.
Source — the structure it was salvaged from, and where in it (wall, course, position) if that was recorded.
Species and dimensions — measured, not estimated.
Photographs — of that piece, tied to the record so they can't be swapped.
Custody — who recorded what, and when, in an order that can't be rearranged after the fact.

The part most certificates skip: verifiability

Here's the difference that matters. A signed PDF says "trust me." A verifiable certificate lets the buyer confirm the record themselves — that the photos match the piece, that nothing was edited after it was signed, that the claims trace back to a known source. The trust moves from "because the seller said so" to "because you checked."

That's the whole point of tying a certificate to a signed, tamper-evident record and a scannable link. A buyer scans, and verification runs in their own browser. They never have to take anyone's word for it.

What an honest certificate won't claim

A trust product that overclaims isn't one. A good provenance certificate is careful about its edges:

It attests that a specific piece was tagged, measured, photographed, and its custody recorded by a known party, in a tamper-evident order. It does not attest structural soundness, code compliance, or that the salvage was legal — those stay the dealer's own representations. A signature proves who said something, not that it's true; what it changes is that lying becomes permanent and attributable.

How to read one you're handed

Does it identify the specific piece, or just the lot? Lot-level "authenticity" is nearly meaningless once boards are separated.
Can you verify it without calling the seller? If the only proof is their say-so, treat it as a marketing claim.
Does it state what it doesn't cover? Certificates that claim everything are the ones to distrust.