chain: use binary search for byTime.
chain: use binary search for byTime.

VidaID/bcoin,decentraland/bronzeage-node,decentraland/decentraland-node,decentraland/bronzeage-node,decentraland/decentraland-node,VidaID/bcoin,decentraland/bronzeage-node,decentraland/decentraland-node,VidaID/bcoin