Namespace ID byte length should match NamespaceId serialized byte length--see #1574
Remove table header. (Number of entries is an implicit function of table byte length.) Also remove code obsoleted by this change. All such code can be found by searching for a code comment containing the URL of this issue: https://github.com/EspressoSystems/espresso-sequencer/issues/1604.
An offset denotes a start-index, not an end-index. (More intuitive, no significant impact.)
See Proposal: changes to namespace table binary format.
Summary excerpted from the above doc:
NamespaceId
serialized byte length--see #1574https://github.com/EspressoSystems/espresso-sequencer/issues/1604
.