28 Signals

Non-Custodial Bitcoin Seed Migration Service

A supervised, privacy-preserving process for generating independent entropy, testing wallet recovery, and safely moving bitcoin to a new seed.

Added Aug 1, 2026

Bitcoin self-custody

Security services

Hardware-wallet operations

Opportunity score

Low opportunity (49%)

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The Problem

Hardware-wallet owners cannot easily determine whether an existing seed phrase was generated with sufficient randomness. When firmware or random-number generation is questioned, updating the device does not repair an already weak seed, while an improvised migration can expose the new seed or permanently lose funds.

Potential Solution

Offer an appointment-based migration ceremony in which the customer generates entropy with supplied dice or coins, creates the wallet on isolated equipment, verifies recovery, and rehearses a small transfer before moving the remaining balance. The operator supplies equipment, a documented checklist, privacy controls, and live guidance but never handles funds, records the seed phrase, or takes custody of signing devices.

Why Now?

A widely discussed hardware-wallet entropy failure has made seed-generation integrity an immediate concern. The incident also demonstrates that apparently valid seed phrases can remain vulnerable for years and cannot be repaired through a firmware update alone.

Market validation

Search demand

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Showing 1-20 of 28 signals

PodcastsAug 13, 2026

Exploring BMC Vulnerabilities - BTS #80

Below the Surface (Audio) - The Supply Chain Security Podcast

It's not even about hardware. Random is hard. Like, making a good random in a computer is an incredibly hard problem. If you want to have your wallet secure, use an offline machine to generate your wallet, then put it into hardware, and this way you sidestep any potential generator problems with your hardware wallet. But even then, like, the whole point of this exercise is that, like, again, cryptographically secure random is the default. Don't use not cryptographically secure random. People use it multiple times and paid for it, starting, like, as deep as TCP protocol. People decided that some not very random values were actually cryptographically secure.

PodcastsAug 13, 2026

Exploring BMC Vulnerabilities - BTS #80

Below the Surface (Audio) - The Supply Chain Security Podcast

Chase, you had an article about these devices, the hardware wallets. Yeah. They used a deterministic pseudo-random generator instead of the hardware generator. It's a fun one. Which I think, you don't need access to the hardware, right? Because the, like, resulting keys from that are crackable because they didn't use a good random seed.

RedditAug 3, 2026

r/Bitcoin

Still using Coldcard but with great entropy?

i checked if the dice rolls gives correct seed with a set of test-rolls/test seeds: 1.5.0Q gives correct dice rolls seeds. I will never ever trust any RNG, it does not matter what company it is. I trust my 🎲 and verify they are compiled correctly to seed. I cannot verify a RNG, I cant read code, but I can roll 🎲 and verify it. Iportant: never ever use those tested/verified dice derived seeds. Test - dump - make fresh rolls and use that for seed.

RedditAug 3, 2026

r/Bitcoin

Bitcoin Self Custody Checklist - It starts with an unguessable seed

The ColdCard disaster has many people thinking that Bitcoin is too difficult to secure. While key management is not simple, it is achievable for perhaps not all, but for many. It all starts with securing a truly random private key represented by a seed phrase. The primary take away is that it is better not to trust any RNG whatsoever, and to simply roll your own. [github.com/.../Bip39-diceware](github.com/.../Bip39-diceware) shows how with 1 fair coin and four fair 6-sided dice, you can create your seed phrase with just 12 rolls and 12 coin flips. This is a seed phrase that cannot be brute forced and guessed. Because there is not enough energy in the galaxy to flip enough bits to brute force it in billions of years. This is just for 12 words and no passphrase. 24 words is even more impossible to guess, but unnecessary. The passphrase is only useful if your seed phrase can be found and used by an unauthorized person. A passphrase adds another layer of complexity in that if you lose your passphrase, you lose your Bitcoin. It is a trade-off. I and others advocate multi-sig as opposed to a passphrase. If unintended discovery of your seed phrase is a real concern, learn about multi-sig. Additionally, multi-sig is much safer than splitting your seed phrase into separate pieces and hiding them separately. Again, if you lose one piece, it's all lost. With a 2 of 3 multi-sig e.g., any 2 of the 3 seeds can sign a transaction. You can lose 1 seed, and the other 2 will preserve your Bitcoin. I made a previous post with a similar theme. This infographic is substantially better than the previous, so I deleted that post. I am hopeful this is useful to you and happy to discuss.

PodcastsAug 3, 2026

TWiT 1095: Horses and Sailboats - Folding Phones Get Cute and Expensive in a Race With Apple

This Week in Tech

But, in the software, it said, no, no, don't, don't, don't use the generator. It just made it, basically seeded it from the chip serial number and its clock register. So it wasn't very random, especially since the serial number is, is fixed at the factory and the clock values are a timing state that an attacker can narrow down. So, consequently, the range of keys the device could ever produce went from an inf, virtually infinite number to a number you could count. Right. And so, and you can get into these devices over the internet, apparently. Right. So attacker would generate candidate seeds, attack the device. The device is not involved in any point.

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