Andreas Schjønhaug

Developer in Oslo working on Bitcoin, self-hosted software, and practical tools.

I build open-source software and write about Bitcoin, privacy, and development.

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  1. Why Dice-Only Coldcard Seeds Were Unaffected by the RNG Bug

    Independent tools, historical source, and tests on affected Coldcard firmware show that 99-roll dice-only seeds bypassed the affected firmware randomness path.

  2. Bitcoin’s Safeguard Against Monopoly Seigniorage

    A fundamental aspect of Bitcoin lies in its ability to thwart monopoly seigniorage—a scenario where a single entity profits from the issuance of new currency. Traditional monetary systems, governed by central authorities, can face challenges such as inflation and economic instability due to unchecked money printing. Bitcoin, in contrast, is purposefully structured to prevent any singular entity from monopolizing the creation of new coins, contributing to a more stable and transparent monetary framework.

  3. Promoting privacy and censorship resistance in Bitcoin Core

    An archived command-line guide to configuring Bitcoin Core over both Tor and I2P for private, censorship-resistant peer connections.