Chain Key Technology (chain lock technology) is the core of the Internet computer protocol and is a set of special edge cryptographic systems developed by DFINITY. The most unique aspect of chain lock technology is that it allows Internet computers to have a single public key, which can verify information about that single public key sent from other computers.

Chain lock technology gives Internet computers a huge advantage over other blockchain projects, because verifying all messages is a public key of only 48 bytes, while other projects may require 400GB of data. The chain lock technology enables DFINITY to provide the same application experience as the traditional Internet and run at network speed.