Yeah, did little bit research and saw that both of the suggestions doesn't meet my requirements completely. I'm still searching. I'll post the way that I found later 👍🏻

turker

The only thing I could think close to it is OpenAlias, but only Electrum is the main wallet to support it. You tie your wallet receiving address to a public DNS record and you can type in that domain in that wallet to send transactions towards it.

If you want a system that doesn't reveal your wallet address there is only something like a PayNym. Sparrow Wallet supports setting one up other than Samourai.

Overall, for a cold storage scenario each method isn't great or it is infeasible.

bitcoin

Is there any way to use custom domain as BTC wallet address?

The only thing I could think close to it is OpenAlias, but only Electrum is the main wallet to support it. You tie your wallet receiving address to a public DNS record and you can type in that domain in that wallet to send transactions towards it.

If you want a system that doesn't reveal your wallet address there is only something like a PayNym. Sparrow Wallet supports setting one up other than Samourai.

Overall, for a cold storage scenario each method isn't great or it is infeasible.