Kokonotsuba is a closed-source imageboard software developed by the Kolyma Network. It was released on March 14th, 2021, 9channels 16th birthday. The software is a fork of pixmicat, although it has been heavily modified since.
The name "Kokonotsuba" was chosen after the long-lasting tradition of naming imageboard software after the number of leaves on a plant (e.g. Futaba). "9 leaves" was chosen because of 9channel, the genesis of KolymaNET.
All of these versions have been disabled to prevent abuse, they are currently read-only.
At this break, Kokonotsuba did not make any major improvements and therefor did not continue the numbering system. As of July 2021, this will be resumed. The system in place to monitor upgrades was also not in place, so the differences between early versions are fuzzy.
It was deemed that after all the improvments, fixes, and updates, that Kokonotsuba had likely advanced by 2 versions, so the next public version is set at 1.3