README

Code copied from the bech32 repository. It contains reference implementations of the Bech32 and Bech32m algorithms, along with an implementation of the SegWit algorithm which is a specialization of Bech32(m) for Bitcoin. The code used in ClickHouse is only the Bech32 algorithms, not SegWit. See this link for more info on the algorithms and their applications.

Modifications to the code:

• typedef changed to using as per compiler warnings
• Problematic asserts were changed to if statement + empty return
• convertbits function was copied directly into src/Functions/FunctionsBech32Representation.cpp