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HIP304 - z_signmessage + z_verifymessage

  HIP: 304
  Title: Signing and verifying messages from Sapling addresses
  Author: Duke Leto
  Category: Standards
  Created: 2020-02-02
  License: GPLv3

Terminology

The key words "MUST", "MUST NOT", and "MAY" in this document are to be interpreted as described in RFC 2119. [#RFC2119]

Abstract

This is an xxx HIP describing signed Sapling messages.

Motivation

TLDR: Extend the signmessage and verifymessage RPCs to Sapling shielded addresses.

Specification

This document specifies two new RPCs

z_signmessage
z_verifymessage

which are direct shielded counterparts to the original Bitcoin RPCs:

signmessage
verifymessage

References

.. [#RFC2119] Key words for use in RFCs to Indicate Requirement Levels <https://tools.ietf.org/html/rfc2119>_ .. [#BIP32] Hierarchical Deterministic Wallets <https://github.com/bitcoin/bips/blob/master/bip-0032.mediawiki>_