I just raised my opinion.
For now, I locked the topic, and months or years later, just remembered that I did it in 2019 ^^.
Best regards,
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1. To fix important security risks found in older versions
2. To add new functionality
3. To reverse transactions.
a breaking change in the protocol (an update)
a division into branches or the place where something divides into branches
Blockchain protocol: the code convention which defines the connection, mining and transaction rules. To be a part of the network, you must comply with the protocol.
Fork: the moment you have a protocol version which is different from the main one.
After a hard fork, the previous version and the new one are completely split, there is no communication or transaction option between the two. Usually, the new version inherits all the historic transactions and, from now on, each version will have its own transaction history.
1. To fix important security risks found in older versions
2. To add new functionality
3. To reverse transactions.
A hard fork can be implemented to correct important security risks found in older versions of the software, to add new functionality, or to reverse transactions (as in the case with the hard fork to reverse the hack on the DAO (decentralized autonomous organization) in the Ethereum blockchain).
[SECURITY ALERT] #Constantinople upgrade is temporarily postponed out of caution following a consensus decision by #Ethereum developers, security professionals and other community members. More information and instructions are below.
In this upcoming case, the Ethereum upgrade has been widely embraced by the community and until now there have been no major players protesting Constantinople (the name of the upgrade).
On January 15, Ethereum’s developers put out a security alert that they were postponing the scheduled Constantinople upgrade.
The upgrade was postponed Tuesday during a developers call
Ethereum’s long-anticipated Constantinople upgrade
Named Constantinople, the system-wide upgrade, or hard fork
Expected to activate next Wednesday, Jan. 16, Constantinople is a type of upgrade known as a hard fork
Constantinople introduces five new upgrades to the network.