Good to see a new addition on your website.
I have seen the same tool on multiple websites already. I think Bitlist also has it. But thanks for the new tool.
As far as i know they only have a pgp verifier, and it doesnt work for any pgp key. Only for listed services.
A Cryptographically Relevant Quantum Computer (CRQC) running Shor's algorithm can turn an exposed public key into a private key. When you sign bitcoin messages, you expose the public key.
That's something I wish I'd learned before signing publicly-staked bitcoin address messages (not that you can prevent people from paying to one you never had BTC on to begin with)...
There is no reason to regret it. Creating a new wallet does not cost you anything. You don't need to use the same wallet if you think using it will be a risk for you. I am glad that a Bitcoin wallet is free. I have signed a message from one of my addresses, but that does not mean I will keep my funds in this wallet. I can always choose not to use it anymore. If you are afraid of signing a message using your Bitcoin wallet address, you can always choose PGP instead.
Exposing your public key wont harm your secuirty.
If quantum computers will be able to do that one day, they will need to expend a lot of computation power to Crack the private key from the public key.
Your address with few satoshis wont be a target
If you think people will target your coins, certainly paying $ 0.01 in a bitcoin transaction wont be a problem and you hold many millions of dollars in such address.