[bitcoin-dev] A BIP proposal for segwit addresses

Russell O'Connor roconnor at blockstream.io
Thu Jul 26 13:43:19 UTC 2018


Hi Pieter,

> The *human-readable part*, which is intended to convey the type of data,
or anything else that is relevant to the reader. This part MUST contain 1
to 83 US-ASCII characters, with each character having a value in the range
[33-126]. HRP validity may be further restricted by specific applications.

You should also add to this section that the HRP should be lowercase.

Since Bech32 forbids mixed-case and otherwise converts everything to
lowercase, it is good to warn upfront against using uppercase in the HRP.

I know the BIP is marked as final, but this wouldn't be a normative change.
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