The Dice – 5 Pack is a set of 5 high-quality six-sided dice specifically selected for generating true physical entropy during BIP-39 seed phrase creation. Unlike casino-grade dice (which may have manufacturing biases for gaming), these dice are precision-milled for consistent fairness and reliability, making them suitable for cryptographic entropy where predictability must be eliminated.
Each die is designed for repeated rolls (typically 99+ rolls recommended for 256-bit entropy) to produce randomness that is user-controlled and trust-minimized—avoiding any reliance on software or vendor-generated random number sources.
What’s Included
- 5 × high-quality six-sided dice
- Optional sticker (+$5) for personalization or marking
Optional Bundle
- Dice Pack + Sticker: $XX + $5 = total $XX
This pack can be purchased together with the NovaSapien Self-Custody Kit – Sovereign Backup System for a complete self-custody solution that pairs entropy generation tools with comprehensive backup materials.
NovaSapien’s online self-custody courses offer detailed, step-by-step guidance on entropy generation, seed creation, and secure wallet practices. If you’re unfamiliar with using dice for BIP-39 entropy, the courses provide clear instructions—take your time to build a thorough understanding. You can also reach out to NovaSapien directly for assistance. Official resources are available at seedsigner.com.
Technical Specifications
- Dice type: High-quality six-sided (precision-milled, balanced)
- Weight: ~0.1 kg (pack)
- Dimensions: Standard dice size (~16 mm per die)
- Warranty: 360 days on components
Returns
Unused and undamaged packs can be returned within 30 days. No returns on opened or used products.
Frequently Asked Questions
What are these dice for?
These 5 high-quality six-sided dice are for generating true physical entropy during BIP-39 seed phrase creation. Roll them repeatedly to drill down through the standardized BIP-39 wordlist to select words securely and offline.
How do I use the dice with the BIP-39 wordlist?
Use the standardized BIP-39 wordlist to generate a seed completely offline. Each page is divided into 6 large rectangles, each of those into 6 smaller rectangles, and each of those into 6 even smaller ones. Roll a die to drill down until you reach a word. You can use this method to get the first 11 words of your seed phrase, but the 12th word (checksum) must be calculated from these words using a tool such as a SeedSigner. NovaSapien’s online self-custody courses explain the exact process step by step.
Are these dice compatible with SeedSigner?
Yes—these dice are fully compatible with SeedSigner (or any BIP-39 compatible wallet) for manual entropy input. SeedSigner is a base-level air-gapped device every Bitcoiner should own—as much a training tool as a signing device.
What if I lose or damage a die?
Dice are inexpensive and replaceable. The entropy process is repeatable—simply use new dice or the remaining set. Always verify your final seed checksum to ensure no errors.
Where can I find more information?
NovaSapien’s online self-custody courses provide detailed support on entropy generation and seed creation. If you’re unfamiliar with using dice for BIP-39 entropy, the courses offer clear guidance. You can also reach out to NovaSapien directly for assistance. Official resources are available at seedsigner.com.
What is the return policy?
Unused and undamaged packs can be returned within 30 days. No returns on opened or used products.
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