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Please verify my e-mail's digital signature with a public key has the fingerprint above. And you can use E2E encryption with them as well.

If I received spams frequently to the address mentioned in Contact, I will change this contact address. So please check this page if you cannot contact me. I will ignore massages from institution does not have certified Homepage and written in plain text. Excuse me, but let's use e2e communication with a simple and ubiquitous protocol (Simple mail transfer protocol), not by closed complicated tools for obtaining private information like a fraud.