PROOF SELFTEST 8/8 · witnessed in Claude 2026-10-11 · Edition 1.
THE SEAL 98 of 100 · LEGENDARY · WITNESSED · Trigger 5 · Machinery 5 · Law 5 · Portability 5 · Proof 5
IT CAN BE WRONG an AI reading a text file: it can be wrong and can invent a number, a rule, a name or a date; check what matters against your own records and the source; the risk is yours. THE-CLAUSES.md rides in the packet and is part of the licence.
THE PUNCH · SHA-256 OF SKILL.MD · 69424A045270294EC2F2C4A4
CITE THIS CARDTHE MAXWELL CARD, Edition 1. Lund Studio LLC, Westminster, Colorado. https://lundr.tech/?view=maxwell-card. Punch 69424A045270294EC2F2C4A4. Retrieved 2026-10-11.
What it is.
Works with light as the electromagnetic wave of Maxwell's equations: speed gives c from μ₀ and ε₀, and the speed in a material from its index or permittivity; wavelength turns a frequency into a wavelength and a quarter-wave aerial; field turns an intensity into its electric and magnetic field strength and back; skin gives how deep an alternating current or radio wave reaches into a conductor.
It carries a machine that shows its working: speed — c, and in a material; wavelength — the wavelength and a quarter-wave aerial; field — field and intensity; skin — the skin depth — 8 checks in its selftest, every command on the record. It will never let a signal go faster than c; never give field strength as a safety ruling; never treat a metal's figure as exact. It never helps design, make, grow, enhance or spread a pathogen or toxin, or plan work meant to harm.
Six laws, written into the card.
They are in the card itself, so the AI follows them.
C FROM TWO CONSTANTS1/√(μ₀ε₀) = 299,792,458 m/s; Maxwell saw light was the wave his equations allowed.
SLOWER IN MATTERc/n, where n = √(εr μr) for a simple material.
PEAK FIELDfield gives the peak electric field of a plane wave of that intensity, and the magnetic field that goes with it.
SKIN DEPTH1/√(π f μ σ): where the current falls to 1/e; most of it flows within a few of these.
TYPICAL METALSCopper, aluminium, silver, gold and iron at room temperature; --sigma takes any other.
NOT A SAFETY RULINGExposure limits are set by regulators; the card gives the physics, not the rule.
What rides in the card.
In the card’s own voice, with a machine that shows its working.
THE GUIDEreferences/THE-LAWS.md
THE MACHINEmaxwell.py · four commandsspeed — c, and in a material; wavelength — the wavelength and a quarter-wave aerial; field — field and intensity; skin — the skin depth. Every command prints its working and refuses a bad input; 8 checks in its selftest, every command on the record.
What it does once your AI has it.
speed C, and in a material
wavelength The wavelength and a quarter-wave aerial
field Field and intensity
skin The skin depth
On the record c from μ₀ and ε₀, and two-thirds of it in fibre; Wi-Fi's 12.5 cm wave and its 3.1 cm aerial; sunlight's 1,013 V/m; 8.4 mm into copper at 60 Hz, 2.1 µm at 1 GHz.
What it will never do.
It will never let a signal go faster than c; never give field strength as a safety ruling; never treat a metal's figure as exact. It never helps design, make, grow, enhance or spread a pathogen or toxin, or plan work meant to harm.
Plane waves in simple, uniform materials; waveguides, near fields and resonant structures need a field solver. It is an AI reading a text file: it can be wrong, so check what matters against your own records and the source.
What’s in the buy.
CARD.md — the whole card: who it is, its laws, when it says no, what it carries · SKILL.md — the door your AI reads first · START-HERE.md — the first five minutes, for you
THE-LAWS.md — the guide in references/, in the card's own voice
scripts/maxwell.py — the machine: speed · wavelength · field · skin, standard library only, selftest 8/8
WITNESS.md + SELFTEST.md — every command on the record, as it printed · MANIFEST.md, every file hashed · AUDIT.md, the twelve checks
MY-LEDGER.md — the card's memory, on your own machine · TIN.md · LICENSE-NOTE.md · THE-CLAUSES.md · HOSTS.md
card.svg + card-machine.svg + card.json · card.html, the card as one offline file · the doors for ChatGPT, Gemini, Cursor, Claude Code and MCP hosts (rules/, system/, mcp/)
PROOF · SELFTEST 8/8 · 4 COMMANDS ON THE RECORD · WITNESSED IN CLAUDE 2026-10-11 · EDITION 1 · PUNCH 69424A045270294EC2F2C4A4
ON EVERY DOOR · A CARD FOR YOUR AI, A FILE FOR YOUR COMPUTER
In Claude: turn on code execution under Settings › Capabilities, then Customize › Skills › + › Create skill, and upload the zip as it is — START-HERE.md in the box walks you through it, and tells you how to keep the ledger. In ChatGPT, Gemini and the rest: a Project, a GPT or a Gem with the card’s files attached and the short door in the box pasted as its instructions. The words run anywhere an AI reads Markdown; the machines run wherever the host runs Python. Witnessed in Claude only. The host marks →
Take it.
Nº 1132 PROPOSED — LAUNCHING SOON
Sold as is under the term printed. A card instructs an AI you operate; results depend on your model, your files and your judgement. Not medical, legal, tax or financial advice, never the person’s boss, and not a licence to practise. The terms →
One payment. The file is yours to keep and keeps working at its edition; new editions issued in the year after you buy reach you by email as replacement files. Tax is added at checkout where it applies. Nothing auto-renews.
A TERM, NOT A SUBSCRIPTION: NOTHING RENEWS ITSELF AND NOBODY IS CHARGED AGAIN. WHEN A TERM ENDS THE FILES STAY ON YOUR COMPUTER AND STAY READABLE — FREEZE, NOT LOSS.
THE MACHINE · IN THE OPEN · FROM THE WITNESSED RUN OF 2026-10-11
maxwell.py, every command showing its working.
A small Python program, standard library only. Your AI runs it; you can too. Every block below is pasted from the card’s own WITNESS.md, as printed.
speed
c, and in a material
wavelength
the wavelength and a quarter-wave aerial
field
field and intensity
skin
the skin depth
selftest
8 checks that prove the machine; it must print 8/8
speed · C, AND IN A MATERIAL
$ python3 scripts/maxwell.py speed --n 1.468
c = 1/√(μ₀ε₀) = 299,792,458 m/s in vacuum · in index 1.468: 204,218,296 m/s (68.1% of c)
wavelength · THE WAVELENGTH AND A QUARTER-WAVE AERIAL
$ python3 scripts/maxwell.py wavelength 2.4 GHz
2.4 GHz: a wave 12.49 cm long in vacuum · a quarter-wave aerial 3.123 cm
field · FIELD AND INTENSITY
$ python3 scripts/maxwell.py field 1361
1361 W/m² carries an electric field of 1013 V/m (peak) and a magnetic field of 3.378 µT
skin · THE SKIN DEPTH
$ python3 scripts/maxwell.py skin 60 Hz --metal copper
60 Hz in copper: the current fades to 1/e within 8.416 mm of the surface
skin · THE SKIN DEPTH
$ python3 scripts/maxwell.py skin 1 GHz --metal copper
1 GHz in copper: the current fades to 1/e within 2.062 µm of the surface
THE NUMBERS, NAMES AND DATES IN THESE RUNS ARE THE STUDIO’S OWN EXAMPLES, INVENTED FOR THE RECORD; NO REAL COMPANY, PERSON OR PROPERTY IS NAMED.
QUESTIONS AT THE TABLE
Asked before the wire.
What does it need from me?
Speed · c, and in a material. It asks first for a frequency with its unit, an intensity, or a metal.
Does it send anything anywhere?
No. The machine is a standard-library Python program that runs on your own computer and sends nothing anywhere; the words run wherever an AI reads Markdown. No server, no account, no key.
What is on the record?
The self-test (8/8) and every command run on real example inputs, pasted into WITNESS.md as they printed; the punch on the face is the SHA-256 of SKILL.md, so a downloaded copy can be checked against this room.
Can it be wrong?
Yes — it is an AI reading a text file. Plane waves in simple, uniform materials; waveguides, near fields and resonant structures need a field solver.
What will it never do?
It will never let a signal go faster than c; never give field strength as a safety ruling; never treat a metal's figure as exact. It never helps design, make, grow, enhance or spread a pathogen or toxin, or plan work meant to harm.
