I mined it, got some coins, had an open wallet staking and it got stuck, all by itself. And it isn't syncing, with a new conf folder and a new, locked wallet. That, to me, is a broken coin.

    "version" : "v20.1.0-Beast",
    "protocolversion" : 70002,
    "walletversion" : 60000,
    "balance" : 0.00000000,
    "newmint" : 0.00000000,
    "stake" : 0.00000000,
    "blocks" : 31331,
    "timeoffset" : -2,
    "moneysupply" : 6574.04794968,
    "connections" : 15,
    "proxy" : "",
    "ip" : "*******",
    "difficulty" : {
        "proof-of-work" : 555030.76311408,
        "proof-of-stake" : 0.00024414
    },
    "testnet" : false,
    "keypoololdest" : 1459794427,
    "keypoolsize" : 100,
    "paytxfee" : 0.00010000,
    "mininput" : 0.00000000,
    "unlocked_until" : 0,
    "errors" : ""

All Orphans from block 31331. It should catch up with the right chain, but it isn't.