I was one of the ~300 people who helped recover a 12-year-old Bitcoin wallet

Earlier this month I participated in a public Bitcoin wallet recovery challenge involving a wallet that had been untouched for around 12 years.

What I found most interesting was that the challenge wasn't about breaking Bitcoin's cryptography. Instead, it showed how quickly a large group can search a reduced solution space once enough information is known.

The wallet was recovered in about 11 minutes by roughly 300 participants working independently.

A few takeaways:

• Bitcoin itself wasn't "hacked."
• Security depends on protecting all recovery-related information, not just private keys.
• Small reductions in uncertainty can have a huge impact on how difficult a recovery problem is.
• Crowdsourcing can dramatically accelerate search and recovery efforts.

I wrote up a detailed breakdown of what happened, how the challenge worked, and why it was solved so quickly:

https://blog.flipflow.app/blog/cracking-a-12-year-old-bitcoin-wallet

Happy to answer questions about the challenge or my experience participating.