I believe you're just spending the Sats, so it costs nothing. You could transfer to a different wallet address you also own I presume.
This is what AI says:

If I transfer the 100,000 sats needed to unlock a custom address on nostr:nprofile1qqstu8vf099ljt09m4jvres0dgk8ps2q4wkfjvjp3lhrp3wxxllfg7gpremhxue69uhkummnw3ez6vpn9ejx7unpveskxar0wfujummjvuq3vamnwvaz7tmjv4kxz7fwxpuxx6rpwshxxmmdqyv8wumn8ghj7un9d3shjtnndehhyapwwdhkx6tpdsshk55v, do I have to keep that liquidity in the wallet? Or is this a one-time thing?
I believe you're just spending the Sats, so it costs nothing. You could transfer to a different wallet address you also own I presume.
This is what AI says:

The 100,000 Sats state "on-chain" which means not a lightning transaction, but a main chain transaction to anybody (including yourself)
Ohhhhhhhh. So I can lightning myself 100k to my Satoshi wallet, then I can mainchain it back to myself? That's freaking weird. I guess I'm still figuring out this lightning stuff. I'm not sure if this is an idiosyncrasy of Lightning or just how Wallet of Satoshi does verification for their domain service or something. Huh.
Yes, I think that would work.
But maybe better if you send it as 10 x 10K Sats Lightning so you meet the other criteria at the same time.