What is the encryption used in this

Question

4febada1e37ea56a01065c79ba3c7b04ecb53ecc

Answer 1

Without venturing a guess, I believe a property of something that's properly encrypted is that the output (assuming that's what this is) should be unintelligible from random noise.

SHA refers to Secure Hashing Algorithms and (hashing) is not encryption.

Answer 2

https://i.imgur.com/y7SGH6O.png

Answer 3

edited: it is using hash function SHA1