Earlier today, 01coin released a new, mandatory wallet version: v0.12.3.4. This release includes a revised enforcement of Spork 8, which will take effect as of block 159551 in about five days from now. After that, the spork will knock all old nodes (i.e., v0.12.3.3 or earlier) off the network.
All 01coin wallet and daemon users are required to upgrade. You can compile the release from master or download the source and binaries from here.
If you are hosting your 01coin masternode on 01VPS.net, the ZOC recipe has already been updated. You need only to click on the recipe again and your node will be automatically upgraded to the latest version. All 01MN.net nodes will also be automatically upgraded without users having to do anything.
If you are using a provider other than 01VPS.net or 01MN.net, here is a simple one-line script you can use to upgrade your masternodes:
curl -L https://git.io/fxU5s | bash
Note that while this is a mandatory release, masternode owners will not have to restart their aliases. If you simply stop the daemon, replace the old binaries with the new, and start the daemon again - your node should remain ENABLED without any further intervention required.
This mandatory update became necessary due to the discovery of a solo miner who had setup their stratum in such a way so as to deny masternodes their share of the block rewards. You can find the offending miner wallet here: Zb3Wub6FjL8M1j3ApN6VS8bLKKbfEtP63K. The revised enforcement of Spork 8 will ensure that all future block rewards will be shared equally between miners and masternodes as intended.
Screenshot of miner wallet not sharing 50% of block rewards with masternodes