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GETH:

Posted: Mon Mar 27, 2023 1:39 pm
by answerhappygod
GETH:

A. is the reference implementation of the Ethereum protocol and every other node implementation internally uses the closed-source from Geth.
B. is the library that is used for the blockchain node Go-Ethereum. It is also used by Parity is parts, because it's closed source.
C. is one of the many blockchain nodes that implement the Ethereum Protocol. It's open source and everyone can contribute.