Why Self-Custody Belongs in Every Estate Plan

Every year, an estimated US$68 billion of Bitcoin is rendered permanently inaccessible. Not stolen. Not hacked. Just lost - because the only person who knew how to access it died, forgot, or never told anyone the keys existed.

The traditional estate planning toolkit was never designed for bearer assets that live behind a string of 24 words. A will can name a beneficiary, but it cannot move sats. An executor can be granted authority, but without the seed phrase, that authority is meaningless. The legal scaffolding and the cryptographic reality have to meet in the middle - and right now, in most Australian estates, they don't.

The default outcome is bleak. A holder dies. Family members know there was 'some Bitcoin', but no one can find it. The exchange account, if there is one, takes months of probate to unlock - and only returns whatever was sitting on the platform, often a fraction of the holdings. The cold storage device, if anyone even recognises it, sits in a drawer with no PIN and no backup. The wealth simply evaporates.

Self-custody is what closes the gap. Not single-signature self-custody, which trades one single point of failure (an exchange) for another (you), but multisignature self-custody designed from day one with succession in mind. A 2-of-3 or 3-of-5 wallet structure distributes signing authority across the holder, a trusted custodian, and a nominated third party. No single key unlocks the funds. No single death loses them.

Critically, this architecture is enforceable in a way paper isn't. A will can be contested, ignored, or simply lost. A multisig wallet behaves exactly the way it was set up to behave - waiting periods kick in, beneficiary verification runs, and funds move only when the agreed conditions are met. Your wishes aren't documented, they're executed.

If you hold Bitcoin and you have people who depend on you, the question isn't whether to write self-custody into your estate plan. The question is how soon you can do it.