# Plebum Dominium **Take absolute ownership of your Bitcoin with a zero-trust, at-home self-custody setup designed to outlive any third party.** This folder is the complete Plebum Dominium kit: hold your own Bitcoin keys without buying a company-made hardware signer. The biggest threat in Bitcoin custody is a **single point of failure** — one vendor, one device, one tool, one house. A key generated with sufficient entropy in an airgapped environment is the foundation. After that key exists, you *may* export it onto a trusted hardware wallet for signing. If you put more than one key on hardware, use **different vendors**. You generate entropy with casino dice, convert it on **offline Tails**, build a **2-of-3 native SegWit (P2WSH)** wallet in Sparrow, check the same math in Electrum and Ian Coleman BIP39, then stamp the three seeds on titanium and store them in three places. The presentation teaches the *why*. The print packet and scripts are what you take to a closed-door table. The biggest threat in Bitcoin custody is a **single point of failure** — one vendor, one device, one tool, one house. A key generated with sufficient entropy in an airgapped environment is the foundation. After that key exists, you *may* export it onto a trusted hardware wallet for signing. If you put more than one key on hardware, use **different vendors**. You generate entropy with casino dice, convert it on **offline Tails**, build a **2-of-3 native SegWit (P2WSH)** wallet in Sparrow, check the same math in Electrum and Ian Coleman BIP39, then stamp the three seeds on titanium and store them in three places. The presentation teaches the *why*. The print packet and scripts are what you take to a closed-door table. ## What this stack is | Layer | Choice | |---|---| | Entropy | 5 casino d6, keep faces 1–4 (two fair bits), reroll 5–6 | | Offline OS | Tails USB, networking **Disabled** every boot. Optional: radio-less laptop (Wi-Fi card removed) | | Coordinator | Sparrow Wallet (verified `.tar.gz`) | | Second check | Electrum + local Ian Coleman BIP39 HTML | | Wallet | 2-of-3 P2WSH, path `m/48'/0'/0'/2'` | | Backup | Three titanium stamp plates, one seed each | | Split | Three distant locations; descriptor is not a third seed | | Optional later | Export a finished seed onto hardware for signing; multi-vendor if more than one key | ## How to use these files at home 1. Read this README, then watch **01_Slides.pptx**. 2. Print **02_Print_Packet.pdf** (or the individual sheets 03–09). 3. On a trusted online computer, download official Tails, Sparrow, Electrum, and Ian Coleman BIP39. Verify hashes and signatures. Copy only verified files to a clean data USB. 4. Verify **bip39_dice_converter.py** against **VERIFY.md** *before* you run it. If the hash differs, stop. 5. Work **03_Checklist.pdf** in order, with Tails networking off whenever a seed is in memory. 6. Test with dust in and dust out. Move savings only after both rehearsals succeed. 7. Stamp plates, restore at least one seed from metal, then split locations. Log *places* in **10_Recovery.xlsx**, never the words. **House rules.** No photos of seeds, plates, or word-bearing screens. No seed on a machine that has had a network up in that session. Never load two seeds in one Tails boot. If verification fails, stop. ## Files ### Presentation and packet | File | What it is | What it outlines | |---|---|---| | **00_Project_Overview.pdf** | One-page team overview | Stack, kit map, house rules, QR to the live site (`btcpleb.grok.me`) | | **01_Slides.pptx** | 25-slide Plebum Dominium presentation | Single point of failure; airgapped entropy as the foundation; optional multi-vendor hardware later; 2-of-3; titanium and geography | | **02_Print_Packet.pdf** | One printable packet (title, contents, pages 1–10) | All handouts in teaching order with continuous page numbers. Print this if you want a single staple | | **Handouts_No_Cover.pdf** | Same handouts, no title or contents page | Use when you already have the slides and only need the bench sheets | ### Handouts (also inside the print packet) | File | What it is | What it outlines | |---|---|---| | **03_Checklist.pdf** | Home setup checklist | What to buy and prepare; session flow from first dice roll through geographic split; optional hardware export; house rules | | **04_Airgap.pdf** | Tails airgap sheet | Two-machine rule (online watch-only vs offline signer); how to flash and boot Tails with networking off; what may cross the USB | | **05_Verify.pdf** | Multi-tool verification | Official download sources; hash + signature checks; Sparrow vs Electrum vs Ian Coleman; rule of two before any spend | | **06_Dice.pdf** | Dice entropy guide + recording grid | Unbiased 1–4 mapping; how many shakes; convert and cross-check 24 words; printable shake sheet (print extras) | | **07_Sparrow.pdf** | Sparrow on Tails | Extract and launch the verified Linux archive offline; import one key or the descriptor; sign and export a PSBT | | **08_Signing.pdf** | 2-of-3 spend path | Online unsigned PSBT → Tails Seed 1 (or hardware A) → full shutdown → Tails Seed 2 (or hardware B, different vendor) → broadcast | | **09_Titanium.pdf** | Metal backup and split | Why titanium; how to stamp and read back; Plate A / B / C contents and locations; yearly dust drill; inheritance note | ### Recovery log and converter | File | What it is | What it outlines | |---|---|---| | **10_Recovery.xlsx** | Location and recovery workbook | Where plates and the descriptor live; rehearsal dates; txids of test spends. **Do not put seed words in this file** | | **bip39_dice_converter.py** | Offline dice-bits → BIP39 24-word converter | Standard-library only. Extra bits are SHA-256’d down to 256. First instruction in the file is: verify the file | | **VERIFY.md** | How to check the converter | Published SHA-256, what to read in the source, dummy-bits test (256 zeros) against offline Ian Coleman | ### Other | File | What it is | |---|---| | **AGENTS.md** | Short project brief used when this kit is edited | | **README.md** | This file | ## Official software (get these yourself) Do not follow a random video’s shortened link. Bookmark the project’s own site: - Tails — official Tails website (ISO + signing key) - Sparrow Wallet — official Sparrow website (Linux `.tar.gz` + hash/signature) - Electrum — official Electrum website - Ian Coleman BIP39 — official GitHub repo; save the HTML and open it **offline** - BIP39 English wordlist — `bitcoin/bips` `bip-0039/english.txt` (to compare the converter’s list) ## Converter hash After any edit to `bip39_dice_converter.py`, recompute: ```bash sha256sum bip39_dice_converter.py ``` The digest must match **VERIFY.md**. If it does not, do not run that copy. Current published values are kept only in `VERIFY.md` so this README does not go stale if the script changes again.