 and do
not require signatures. Peers are authenticated by their certificates,
which are assigned by a CA. Although TLS certs are also used, it is
the peer certificates that are authenticated in the gossip layer. Ledger blocks
are signed by the ordering service, and then delivered to the leader peers on a channel.</p>
<p>2. Authentication is governed by the membership service provider for the
peer. When the peer connects to the channel for the first time, the
TLS session binds with the membership identity. 