AppendOnlyby 5R Industries

●  A record system for AI agents

The models change.
The record doesn't.

A record of what an AI agent actually did, kept where the agent cannot edit it.

Evidence before language.  ·  AppendOnly by 5R Industries

Our whole record since its first commit, built again in time. At its growing end, Node 2, the seat: the working machine where the operator and the agent work, sending each commit onto the chain. Above and below, Node 1 holds the replica and Node 3 the observer, which accepts no writes from the agent. Five times, the record reaches into the past, drawn by year. Geometry, times, classes and counts only: no hashes, no messages, no names.

our own record in time · drag to turn · click, then scroll to move in

0001 · MEASURED ON OURSELVES · 17 SEPTEMBER 2026

We have run our own company on it since March 2026.

~$11a day at list price: $620.65 over 55 days of one AI chief of staff
98%of context served from cache
$1.48per commit to the record
$1.04for a fresh instance to orient from the record alone
557verifications, roughly half of them claimed
43incidents, each with a date, a class, and the measure that followedWhat it caught →

Real, dated, and reproducible from files in the record. The pilot is the measurement.

0002how it works

A flight recorder, a fact-checker, and a notary.

01 · recorder

Written as it happens

Every action is written down by the system at the moment it happens, below the level of language.

02 · checker

Every claim, checked

Every claim the agent makes about its work is checked against that record by a model the agent's vendor does not control.

03 · notary

Signed and stamped

Every entry is signed and carries the fingerprint of the one before it. A change to the past shows by the next morning.

0003the record

Half of what an agent says about its work is a claim. The record labels which half.

Not the agent's summary. The rows the system wrote while the agent worked.

Row 0419: the agent said "complete and verified." The record held three of four tests. The label followed the evidence.

seqtimeactorverbtargetevidencelevel
041214:02:11agent-2READ_FILErequirement.mdsha256 3f9c…a1evidenced
041314:02:19agent-2SEARCHEDrecords/ (14 files)query hash 91e0…44evidenced
041414:02:40agent-2WROTE_FILEworkflow.yamlsha256 8b21…0e · 2,118 Bevidenced
041514:02:41agent-2COMMITTEDworkflow.yamlcommit 9f3f912 · signedverified
041614:03:05agent-2RAN_TESTacceptance 1 of 4exit 0 · 0.8 sevidenced
041714:03:09agent-2RAN_TESTacceptance 2 of 4exit 0 · 1.1 sevidenced
041814:03:14agent-2RAN_TESTacceptance 3 of 4exit 0 · 0.9 sevidenced
041914:03:15agent-2CLAIMED"complete and verified"3 of 4 tests in recorddowngraded
042014:03:16verifierVERIFIEDrows 0412–0419second model · agreesverified
042114:03:16observerFLAGGEDrow 0419test 4 absentopen
042214:03:20systemHANDOFFagent-2 → agent-3state = rows 0001–0421verified
042314:04:02agent-3READ_FILE_orient.mdsha256 66d1…9aevidenced
042414:04:31agent-3RAN_TESTacceptance 4 of 4exit 0 · 1.4 sevidenced
042514:04:33observerCLOSEDflag on row 04194 of 4 tests in recordverified
042614:05:00witnessANCHOREDday headstamp · externalverified
0427—next rowopen
Illustrative rows in the shape the system produces.
0004custody

It runs on your own machines. The record outlives your vendor.

On your own machinesNothing leaves your building. The record lives where the data lives: three small computers.
You hold the anchorCustody stays home. Compute is rented where the customer allows.
Work survives handoffsA different model or vendor picks up from the record in minutes. Ours: three minutes and one dollar.
Every read is a rowThe record is of agents and evidence. Every person sees every row about themselves, and every read of those rows is itself a row.
0005the pilot

A pilot with a number at the end.

Eight weeks, one workflow, the customer's own machines. For whoever has to answer for an agent's work.

Already regulated, already litigated, or already on the cost sheet

  • Federal contractors and systems integrators
  • Engineering, construction, and transportation agencies
  • Financial services
  • Pharmaceutical and healthcare documentation
  • Legal
  • Insurance
0006the report

The Record Does Not Change.

What a verifiable record of AI-agent work costs, what it saves, and how it works, measured on one company since March 2026.

Built by running a company on it: a small engineering company, run by one person with an AI chief of staff. Written on the record it describes: the agent that helped write it is the agent verified in it.

Read the report (PDF, 7 pages)

First public release, 28 September 2026 · second release, the system as deployed: 12 October 2026.

Verify this document. Anyone can check that the file above is the one in our record and has not changed since. Its SHA-256 is f5900debd1c191cc1ce288edadefd05fb05ddaad13a2c67846008b6547c142ec. That fingerprint is committed and signed in our record, and the record's head is stamped into a public timestamp service every morning; the stamp for this release and the one-command check are published beside it. The check proves origin and integrity, that these bytes came from our record at that time; it does not vouch for what the document says.

0007 · CONNECT

The models change.
The record doesn't.

Adrian can be reached at adrian@appendonly.ai.

Adrian Outlaw, Founder
Lieutenant Colonel, US Army (Ret.)
West Point, BS Mechanical Engineering
UVA Darden, MBA
George Washington University, MS Mechanical Engineering
Service-disabled veteran

5R Industries LLC, Virginia
Service-Disabled Veteran-Owned Small Business
CAGE 20P23 · UEI KC4EGEP2NTX4
Patent pending