# Gavin Andresen
# 2013-01-25 20:49:45
# https://bitcointalk.org/index.php?topic=138752.msg1479445#msg1479445

@s{quotedtext}
@s{quotedtext}
 @p{brk}
No. It is perfectly possible for multiple people to provide inputs to a transaction, each signing their input but without knowledge of the other people's keys. @p{par}

That is extremely rare now, but that is exactly what you would do to implement a peer-to-peer coin-mixing service, which I suspect may be a very popular way of paying for things since it increases your privacy significantly. @p{par}