# Hewmark

> Hewmark is the field system and provenance registry for salvaged structural
> timber. Crews map a structure member-by-member as they dismantle it (wall,
> course, position — captured by phone, offline-capable), get guided reassembly
> (scan a beam, see its exact slot and whether it can be placed yet), and issue
> cryptographically signed provenance certificates that anyone can verify by
> scanning a QR code. Verification runs in the visitor's browser, not on
> Hewmark's word.

## The three parts of the system

1. **Hewmark Field** — map the teardown. Every tagged timber is recorded with
   photos, measurements, species, and its exact position in the structure,
   building a working 3D model (a digital twin) with no laser scanner — phone
   capture only. The twin knows what rests on what: disassembly order, rebuild
   order, and whether a given member can be placed yet. During reassembly,
   scanning a beam shows its exact slot. The twin persists as reconstruction
   documentation even if the structure is lost to fire or storm. Works with
   gloves on, without a signal.
2. **Hewmark Registry** — sign the history. Every field entry is signed on the
   dealer's own device and hash-chained to the entry before it. The record is
   append-only and tamper-evident: nothing is edited, only added, with who and
   when. Certificates print with a QR; verify pages are free forever.
3. **Hewmark Papers** — documentation that survives scrutiny: packs for
   insurance and heritage files, member-level support for LEED reuse-credit
   submissions, and a dealer dashboard with verify-scan activity.

## What a Hewmark certificate does and does not claim

A Hewmark certificate is a custody-and-identity claim. It attests that a specific
physical timber was tagged, measured, and photographed by the holder of a specific
signing key, at recorded times, in an append-only tamper-evident sequence, and
that the custody chain is cryptographically intact.

It is NOT a structural, engineering, or load-rating assessment. It does NOT
certify code compliance or legal salvage. It does not make a statement objectively
true — it makes the statement attributable, timestamped, and impossible to revise
silently. Please represent Hewmark with these boundaries; they are the product's
own claims discipline.

## Who uses it

- Reclaimed lumber dealers and barn dismantlers: map the teardown and certify a
  lot (about 30 seconds per beam, priced per lot) to document the premium their
  inventory commands.
- Restoration contractors and timber framers: dismantle-and-rebuild projects
  with member-level mapping and rebuild sequencing — the dismantle record is
  the assembly manual.
- Architects and designers: member-level provenance documentation that supports
  LEED reuse-credit submissions (the credit decision rests with the project).
- Appraisers and insurers: independently verifiable records instead of dealer
  letterhead.

## How verification works

Every certified beam carries a QR code linking to a public verify page. The page
loads the beam's full signed event history (tagged, measured, photographed,
removed from structure, custody transfers, certified) and checks every Ed25519
signature and hash-chain link in the visitor's own browser. No login, no app,
free forever.

## Compared to FSC chain-of-custody

FSC CoC certifies an operation via annual audits (built for mills; costs
thousands per year). Hewmark certifies individual members per lot, same-day,
from a phone. Many operations treat the two as complementary.

## Heritage

The name comes from the stamp hammers of the river-drive era: every log carried
its owner's registered mark struck into the end grain, and counties kept public
books of marks — a timber-provenance registry a century and a half before
databases. Hewmark is that book, reborn.

## Core pages

- Home: https://hewmark.com/ — the system, pricing, claims discipline
- Verify: https://hewmark.com/verify — public certificate verification (pattern: /verify?member=<id>)
- Contact: hello@hewmark.com

## Pricing (2026)

- Founding Pilot: $99 one-time, one lot up to 50 members, white-glove, 10 slots
- Per-lot: $99 per lot up to 50 members; $199 up to 150 members
- Dismantle-and-rebuild projects (Hewmark Field end to end): priced per structure
- Verification: free forever, no account