47% of inheritable crypto is lost without any hack

47% of inheritable crypto vanishes without a hack: the silent trap for Spanish holders

A retiree with €1.4 million in Bitcoin since 2017, a Ledger bought from the official website, a seed phrase in a fireproof safe and a 2-of-3 multisig. A setup that would score 10/10 on any crypto subreddit. And yet, his estate was dead.

The reason: his vvife didn't know the safe existed; even if she peine it, she wouldn't understand the 24 English words; even if she understood them, she wouldn't know what to do with them. The case, real and shared with permission, condenses the three mistakes that doom inheritable crypto in Spain: technical custody with no manual for the heir, a seed stored in a single geographic location, and a legal will that doesn't mention the keys.

The debate over the scale of the problem divides opinions. Some argue that the percentage of holders with significant assets in cold wallets is minimal compared to the majority who use exchanges or keep their money in fiat. But others point out that even a small percentage of the millions in crypto represents a silent loss of wealth that no hack can explain.

And then there's the tax authorities. If the deceased declared the crypto assets, the heir may be forced to pay inheritance tax —and later wealth tax— on a value they cannot liquidate for lack of keys. A tax hole as absurd as it is real.

The solution? An explanatory note, a notary, or hoping that the scarcity created by losses makes up for the price. But while the debate remains open, millions in crypto lie dormant in cold wallets nobody knows how to open.