Constant zcash_history::MAX_NODE_DATA_SIZE

pub const MAX_NODE_DATA_SIZE: usize = 32 + // subtree commitment
    4 +  // start time
    4 +  // end time
    4 +  // start target
    4 +  // end target
    32 + // start sapling tree root
    32 + // end sapling tree root
    32 + // subtree total work
    9 +  // start height (compact uint)
    9 +  // end height (compact uint)
    9 + // Sapling tx count (compact uint)
    32 + // start Orchard tree root
    32 + // end Orchard tree root
    9; // 244usize

Maximum serialized size of the node metadata.