This document provides canonical technical definitions of all physical and logical components used within the BUNKEROID modular system.

The purpose of this document is structural clarity, not user guidance.
All definitions are descriptive, not instructional.

BUNKEROID Body

• The BUNKEROID Body is the primary structural component of the system.

• Standard material: EN-AW 5083 (3.3547) aluminum alloy.

• Manufacturing process: CNC milling.

• Final geometry:

  • Rectangular block

  • Dimensions: 90 × 50 × 14 mm

  • Corner radius: R6

  • Edge chamfers: 2 × 45° on both 90 × 50 mm faces

• Threaded features:

  • 6 through-holes, threaded M3

  • Thread type: M3

  • Vertical alignment, symmetrically distributed

• Functional recesses (both sides of the body):

  • Full Cover recess: depth 0.6 mm

  • Seed Fixator recess: depth 0.6 mm

  • Seed Pin slots: 25 positions per side, depth 0.7 mm

• The body provides:

  • positional alignment

  • mechanical fixation

  • spatial separation of components

• The body does not:

  • generate secrets

  • validate data

  • enforce correctness

  • interpret meaning

Seed Pins

• Seed Pins are discrete physical carriers of user-provided information.

• Material: 1.4305 austenitic stainless steel.

• Manufacturing method: sheet cutting, thickness 0.5 mm.

• Geometry:

  • Rectangular with rounded ends

  • Approximate (nominal) dimensions: 12.8 × 5.3 mm

• Each Seed Pin:

  • contains a laser-engraved string

  • is readable only when physically exposed

• Engraving:

  • permanent

  • performed using MOPA laser technology

• Seed Pins do not:

  • store complete secrets by default

  • define order or meaning

  • enforce cryptographic validity

Seed Fixator

• The Seed Fixator is a mechanical retention component.

• Material: 1.4305 austenitic stainless steel.

• Quantity: 2 units per BUNKEROID (one per side).

• Function:

  • fixes Seed Pins in their slots

  • prevents accidental displacement

• Fixation:

  • secured using 2 screws per side

  • aligned along the central axis of the body

• Structural features:

  • openings aligned with Seed Pins

  • allow visual reading when uncovered

• Optional variants:

  • laser-marked positional labels

• The Seed Fixator does not:

  • conceal information

  • control access logic

  • alter engraved content

Full Cover

• The Full Cover is a visibility-blocking component.

• Material: 1.4305 austenitic stainless steel.

• Quantity: 2 units per BUNKEROID (one per side).

• Fixation:

  • secured using 4 screws per side

  • mounted in corner positions

• Function:

  • fully blocks visual access to Seed Pins

• The Full Cover:

  • does not encrypt data

  • does not modify stored information

  • acts only as a physical visibility barrier

Screws

Seed Fixator Screws

• Material: Titanium Grade 5 (Ti-6Al-4V).

• Standard: ISO 7380 M3×4

• Drive type: TX10

• Quantity: 4 total

• Surface treatment:

  • anodic coloration

• Purpose:

  • mechanical fixation

  • visual signaling of sensitive access

• The screws do not:

  • enforce cryptographic security

  • prevent intentional disassembly

Full Cover Screws

• Material: 1.4301 stainless steel (AISI 304).

• Standard: ISO 7380 M3×4

• Drive type: TX10

• Quantity: 8 total

• Function:

  • secure Full Covers

Screwdriver / Tool

• Supplied tool: TORX TX10 bit

• Standard: 1/4″ E6.3

• Length: 70 mm

• Purpose:

  • mechanical assembly and disassembly

• The tool:

  • has no informational role

  • does not interact with data

Pin Box

• The Pin Box is a transport container for unused Seed Pins.

• Material: transparent polypropylene (PP).

• Function:

  • physical protection

  • temporary storage

• The Pin Box:

  • does not impose ordering

  • does not define semantics

Storage Box

• The Storage Box is a transport and assembly container.

• Manufacturing method: 3D printing.

• Structure:

  • two-part enclosure

• Functions:

  • transport protection

  • temporary workspace

  • storage of:

    • assembled BUNKEROID

    • screwdriver

    • Pin Box

• The Storage Box has no security or informational function.

NDS (NoDataStorage System ID)

• NDS is a non-persistent system identifier.

• Engraved directly on the BUNKEROID body.

• Functions:

  • originality verification

  • warranty reference

  • loyalty identification

• NDS does not:

  • store user identity

  • store purchase history

  • store secrets

• Technical definition:

  • NDS = BASE64(HMAC-RIPEMD-160(TXID, secret))

• The secret is held outside the system.

Pin Descriptors

• Pin Descriptors are preparatory descriptor files.

• Formats:

  • ODS

  • XLSM

• Purpose:

  • selection and organization of engraving content

  • planning prior to physical engraving

• Descriptor files:

  • do not generate secrets

  • do not validate correctness

  • do not persist after engraving

• Supported structures include:

  • BIP-0039

  • SLIP-0039

  • Electrum

  • AEZEED

  • Monero

  • arbitrary user-defined strings

• Output:

  • plain text file used exclusively as engraving input

Canonical Boundary Statement

• This document defines components and properties only.

• It does not define:

  • usage procedures

  • security guarantees

  • operational workflows

• Meaning, order, and responsibility remain entirely on the user side.

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