The RPC serving this page is named under the head. The other community nodes stay in the menu. If the active one falls behind, the next in-sync node takes the read.
Search transactions
This search reads only the community RPC serving the explorer. A transaction hash is one lookup. An address search checks a recent window of blocks and shows the matches from that window.
Reading community RPCs
Checking the public RPCs from the BDAG community list. The canonical endpoint is used while it is in sync, and the latest blocks are read from whichever node is serving.