Subject: Re: [bitcoindev] CTV + CSFS: a letter

From: Greg Maxwell <[email-masked]>
Date: Sun, 15 Jun 2025 17:43:14 +0000

On Sun, Jun 15, 2025 at 2:40 PM Jameson Lopp <[email-masked]> wrote:

> It's the same problem as securely generating and storing keys. In order
> for presigned transaction vaults to actually be trustworthy then ephemeral
> key usage needs to occur on a hardened offline device that is highly
> unlikely to be compromised. I'm not aware of any of the hardware
> manufacturers offering functionality for generating and signing with
> ephemeral keys.
>

What device(s) generates the key/key(s) that can immediately terminate the
vault release and take custody of the coins?

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