If you put some satoshis in there as a decoy wallet for the 12-word phrase, just make sure the transactions aren’t linked to your actual stash. You could use Boltz.exchange to swap some sats earned from Stacker News a few times.

This is great! This is honestly the kind of confirmation I was hoping for. I knew it wouldn’t have as much entropy as the 24 word phrase, but 128 ain’t no joke, as I understand it. I was just thinking there may have been some element that I hadn’t thought of.

jasonb

bitcoin

New On-Chain Wallet Release

You start with 128 bits of entropy from the 12 words, which is the standard for a 12-word BIP39 seed phrase. A 24-word seed phrase typically has 256 bits of entropy. While your approach wouldn’t lower the entropy of the original 12 words below 128 bits, the repetitive pattern you’re adding reduces the overall entropy significantly below 256 bits. The security of your 24-word phrase is closer to that of the original 12-word seed, with added complexity but no significant increase in actual randomness.