Dorynn
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Condition reports for second-hand items

Your listing says “excellent condition”. A report verifies it.

An expert examines your second-hand item over a 25 to 75-minute video call, depending on the format. You receive a timestamped, sealed condition report to attach to your listing.

Order a reportSee how it runs
25–75 min
Expert video call
— €
From
3
Precise states
CST-2026-08-4K7X209 · 08 · 2026 — 10:53
Tube guitar amplifier examined in a Dorynn report

Music gear · tube amplifier

Fender Blues Junior IV

Serial no. · FBJ19-004821

C.1Identification and serial numberCompliant
C.3Visible damage and wearReservation
C.4Power-on and basic soundNot checked
M.3Pots and controlsReservation

M.3 · Functional reservation

Clear crackle on the channel 2 volume pot, over the first quarter of its travel.

Digitally sealed · fingerprint a3f9e1

Sealed report

(a) — The protocol

Three steps. Every point declared.

  1. 01

    Qualification

    You describe your item and send a few photos: AI checks their quality and prepares the expert’s file.

    → File prepared

  2. 02

    Guided session

    An expert calls you back on video and guides you, step by step.

    → 25 to 75 min of expertise

  3. 03

    Sealed report

    You receive the sealed report, ready to attach to your listing.

    → Report delivered

The protocol in detail
The Dorynn app showing a sealed inspection report

(b) — The Dorynn app

The file and the session, in your pocket.

The owner prepares the file and runs the session from the app, on their phone. Available on iOS and Android.

  • File tied to the item and its serial number
  • Timestamped photos and observations
  • Report ready to attach to the listing
Download on theApp StoreGet it onGoogle Play
See the categories

(c) — Item passport

A report today, a history for tomorrow.

Each item receives a permanent Dorynn ID. Its successive reports are added to it, from one owner to the next: the buyer sees the whole verified history.

  • Permanent ID assigned at the first report
  • New inspection linked if the expert confirms the serial number
  • One link to attach to your listing, every report verifiable
See an example passport

Dorynn ID

Fictitious example

DY-00EX01

Omega Speedmaster Professional 3570.50

  1. Inspection 320 Sept 2026Premium · 11/12 compliant
  2. Inspection 23 Apr 2026Basic · 5/7 compliant
  3. Inspection 114 Nov 2025Expert · 10/12 compliant

(d) — Pricing

The price follows the item. Never the outcome.

Paid by the seller to strengthen a listing, or by the buyer to have an item checked when it is too far to visit.

See full pricing
FromNet price · Sealed report

— €

  • 25 to 75-minute expert video call
  • Category-specific checklist
  • Timestamped observations
  • Sealed report you can share

(e) — Frequent questions

What the report changes.

All questions
Does the report give an overall score?+

No. Every point is declared compliant, with a reservation or not checked. Nothing is averaged.

Who can order one?+

The seller can strengthen a listing, and the buyer can have an item checked remotely.

How does the examination run?+

The expert guides you on video, step by step, for 25 to 75 minutes depending on the format.

A stronger listing

Have the real condition of your item recorded.

Order a report