Is the coin alive?
"addr" : "198.23.219.66:55540",
"addr" : "136.243.83.33:58556",
"addr" : "168.1.142.114:21547",
"addr" : "5.189.183.74:37196",
"addr" : "104.220.157.120:21547",
"addr" : "58.153.76.204:21547",
"addr" : "51.15.162.24:21547",
"addr" : "134.255.232.129:63807",