Acknowledge the developers of Bitcoin Core (as distinct from the designers of the Bitcoin protocol).
Acknowledge the developers of Bitcoin Core (as distinct from the designers of the
Bitcoin protocol).

Signed-off-by: Daira Hopwood <cd7d43d5556a38ce626d53826fddc46adc597539@jacaranda.org>

zcash/zips,zcash/zips,zcash/zips,zcash/zips