Signature Bank  tapped its local home-loan bank for nearly $10b in the fourth quarter, among the largest such borrowings by any bank since early 2020, according to securities filings. Silvergate Capital, a competing lender that shifted its business toward crypto a decade ago, received at least $3.6b. Although helping banks shore up liquidity is part of the mission of FHLBs, some observers say backstopping the crypto industry’s fallout is far removed from the original intent.