Quote from: wsxdrfv on February 12, 2018, 03:44:04 AM

Quote from: bob123 on February 11, 2018, 01:35:06 PM

Quote from: wsxdrfv on February 11, 2018, 11:44:31 AM

So bitcoin uses sha256, litecoin scrypt, dash x11.
Where is revision location(source code filename, approx line position) of this algorithm?

Simply google. Those algorithms (SHA, scrypt) weren't invented for those cryptocurrencies.
They existed before.

SHA: https://en.wikipedia.org/wiki/SHA-2
scrypt: https://en.wikipedia.org/wiki/Scrypt

X11 is concatenated algorithm composed of BLAKE, BMW, Grøstl, JH, Keccak, Skein, Luffa, CubeHash, SHAvite, SIMD and Echo.

Quote from: wsxdrfv on February 11, 2018, 11:44:31 AM

How change to x11 algorithm? Some site says x11 is best algorithm.

Changing the algorithm would require a hard fork (https://en.wikipedia.org/wiki/Fork_(blockchain)#Hard_fork).
There is no "best" algorithm.
Simply because there is no definition of a "best" algorithm.

Additionally you should not believe what you read on "some site".

Thanks, but what I wondered is where should I revise at bitcoin source code to change its algorithm from sha256 to another?

It looks like you better have a good idea of what you're doing before you attempt to make your own coin, as that's what it sounds like what you want to do.