Notes from building Bitheritance — a non-custodial Bitcoin inheritance tool using pre-signed timelocked transactions. What works, what doesn't, what surprised us.
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Cold UTXOs, fresh wallets, and the one footgun in Bitcoin inheritance
Pre-signed timelocked transactions have exactly one operational gotcha: if you spend a committed UTXO before the unlock block, the inheritance becomes invalid. Here's how it works, why it's a feature and a footgun simultaneously, and the two practical mitigations.
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What happens if Bitheritance disappears?
Every Bitcoin self-custody product owes an honest answer to this question. Ours is unusually clean: the inheritance still works. Here's exactly why, and how to broadcast without us if the time ever comes.
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How timelocked Bitcoin inheritance actually works
A 30-year-old Bitcoin feature, finally useful for estate planning. What nLockTime is, why it's the right primitive for inheritance, and the trade-offs you should understand before trusting it with real money.