Poo team mined until they reached 1 million koin, and after that they stopped. Specifically, they stopped on 2020/10/26. Putting this in perspective, they mined during 13 days, that's all. But we remember them a lot because they were the first ones to monopolize the mining. After this, other big miners came.
I still keep their final message and proof (and they said they didn't use GPU):
Poo bear love Koin
Poo bear now stop mining
292Team is 1%
1M Koin
No dump - Hold On Dear Koin
No GPU: CPU x 40 x 83 MHs
Mining: https://imgur.com/a/Ru4doWT
Cost: https://imgur.com/a/l5bZ5Ll
Now we wait for Koin team
Proof Signed:
{
"address": "0x292d36a9f456996618e5d96200ff804ecb915370",
"msg": "Poo bear stop mining now. 1% = mine",
"sig": "0xb9a425021771755e4a81709ed492f7245a97dce57a0d022fa954ee7cb75cce863e1c7d64e6311e5d2855a4b457744d97a7e125deae2c7e049279de154a0363711b",
"version": "3",
"signer": "MEW"
}