Lisk Core 0.9.15 .: Hard Fork after bad transaction
On June 2, the Lisk network briefly came to a standstill. In the early hours of June 2, somebody had put a timestamped transaction on the LISK chain. However, the Lightcurve team was able to fix the problem quickly with a hard fork.
On Saturday morning there was a lot going on in the offices of the Lightcurve team of the Lisk Foundation (What is behind Lisk?). The Lisk chain worked, but not properly: Most new blocks were mostly empty. In addition, they were only in memory and not on the database. In the meantime, a transaction with a wrong timestamp had crept in, which ultimately brought the whole chain to a standstill.
However, the Lightcurve team was able to locate and fix the problem relatively quickly. Max Kordek about BTC-ECHO:
"The important thing right now is that we were able to quickly identify the problem, find a solution, and get two Lisk Core updates. One to address the problem and the other to prevent similar problems in the future. "
New fork, new luck
When the Lightcurve team noticed that they needed the Lisk Core 0.9.15 release to prevent such transactions in the future, they promptly prompted the exchanges to freeze all transactions. The team then successfully tested the new version on the testnet in order to then transfer it to Mainnet:
"To get a smooth upgrade of the whole network, we had to do a hard fork." (What's a Hard Fork?). The new release was then set up on one of the mainnet nodes. The parameters were changed to an earlier version for a short time so that a retroactive synchronization could take place without the harmful transactions.
The official version Lisk Core 0.9.15 came on Saturday afternoon and network delegates were able to update their nodes.
So far so good. The timestamp problem was solved. But the root of the problem had yet to tackle the team - Lisk Core had not yet located the exact error. Accordingly, the Lightcurve team sent directly the version Lisk Core 0.9.16 afterwards.
In the future, such errors should be remedied and prevented, so that new blocks are created in the event of a system error.
The Lisk Course (LSK) is currently (as of 6/6/18 12:00) at € 7.55 per LSK. In the 24-hour history, this is a loss of almost 4 percent, a loss of 28.9 percent over the month. Within a week, the price was able to recover slightly - here it is with 0.52 percent in the plus.
source: https://www.btc-echo.de/lisk-core-0-9-15-hard-fork-nach-fehlerhafter-transaktion/
