Creator Zun Cracks a Lost Wallet: One Missing Seed Word, 24,576 Attempts, and a Wild On-Chain Rescue

Creator and developer Zun publicly documented an on‑chain rescue of a self-custody crypto wallet where one word was missing from the 12‑word seed phrase, turning what is usually a permanent loss scenario into a recoverable one through methodical brute force and carefully designed on‑chain coordination. According to the thread and follow‑up reporting, Zun remembered 11 of 12 BIP‑39 style seed words for an EVM wallet but had completely lost the 12th, leaving 2,048 possible candidates – 11×2,048 permutations once word positions were considered – which he and collaborators systematically tested on-chain until the correct wallet was identified and its funds moved to safety. The episode highlights how partial seed phrase loss can sometimes be reversed using brute‑force tools when only a small number of words are unknown and the seed format comes from a fixed 2,048‑word dictionary, a scenario security experts describe as one of the only realistic paths to recovery. It also underscores both the transparency and the risks of on‑chain recovery: every candidate address and rescue transaction was visible on public blockchains as attempts were made, meaning that any delay after identifying the correct wallet could have allowed third parties monitoring the activity to front‑run the rescue and seize the funds. More broadly, the story is being used across crypto circles as a cautionary example for operational security around seed phrases: while this particular case ended with a successful recovery, most users missing more than a few words of a seed phrase will not be able to reconstruct it, and best practice remains to treat seed loss as effectively permanent and to prevent it through robust, offline backup practices.

✨ AI-generated background, compiled from web sources — not editorial content.

More coverage

• Lost Phrase = Lost Crypto? Forever? Really? - Cardano Forum (forum.cardano.org)
• Secure Seed Phrases and Passphrases in Zano - Zano Docs (docs.zano.org)
• What Is a Seed Phrase — and What Happens If You Lose It? - Nexo (nexo.com)
• Creator Zun Cracks a Lost Wallet: One Missing Seed Word, 24,576 ... (x.com)

Explore the topic

• Seed Phrase
• Onchain