These are active pools that written at official website koto.cash.
but pools have a payout problem, and being restored now.
If you have another questions, please tell at Discord https://discordapp.com/invite/HmsTDww

K-NOMP
http://koto.poolof.work:8080/
./minerd -a yescrypt -o stratum+tcp://koto.poolof.work:3032 -u [your koto-address] -p anything

KOTOPOOL.WORK
https://kotopool.work:8080/
./minerd -a yescrypt -o stratum+tcp://kotopool.work:[PORT] -u [your koto-address] -p [anything]

おコトを少々(okotowoshosho)
http://okoto.xyz/
./minerd -a yescrypt -o stratum+tcp://okoto.xyz:51000 -u [your koto-address]

KPOOL
http://www.kpool.jp/
./minerd -a yescrypt -o stratum+tcp://jp.kpool.jp:3333 -u [your koto-address]