Function polkadot_primitives::v8::well_known_keys::dmq_mqc_head

pub fn dmq_mqc_head(para_id: Id) -> Vec<u8> 

The MQC head for the downward message queue of the given para. See more in the Dmp module.

The storage entry stores a Hash. This is polkadot hash which is at the moment blake2b-256.