Warning about block reorg? - page 2.

amaclin1

sr. member

Activity: 770

Merit: 305

Quote from: ?? on ??

You're right, but we should find correct message which don't confuse user. For example,

What if we just pass optional command-line argument(s) / conf-file parameter(s) to a client?
Something like (this is just example)

Code:

-reorgwarnblocks=3 # how many blocks have been reorganized
-reorgmessage="Alert. Reorg!" # for me it will be more than enough
-reorgcommand=somethng.sh # command to run in case of

Most of users with default parameters (no warning and actions by default) will not be confused at all.

amaclin1

sr. member

Activity: 770

Merit: 305

Quote from: ?? on ??

If we can think message which won't confuse user or make user panic,

It will be too late for panic

And of course it will confuse 99% users

But I think that we should have it in client.

bones261

legendary

Activity: 1806

Merit: 1828

Quote from: ?? on ??

Quote from: amaclin1 on December 01, 2018, 02:02:37 PM

Do you think we need such warning in reference client? I vote for it.

If we can think message which won't confuse user or make user panic, then i don't have reason to disagree.
Otherwise, such warning should only be shown for bitcoin-cli users or on debug window.

Additionally, re-org doesn't mean 51% attack is happening. There's chance it's done intentionally for ~~good~~ non-hostile due to accidental hard-fork (just like after qt 0.8 release in 2013) or some nodes mines/runs on invalid blocks (such as overflow bug in 2010).

Well, it could clue someone in that something may be going on. Even if the reorg is benign, the node user may discover sooner that they should update their software. Plus, since it just your software indicating a reorg took place, it cannot be as open to attack like the alert system was.

amaclin1

sr. member

Activity: 770

Merit: 305

Quote from: bones261 on December 01, 2018, 01:53:10 PM

This is not standard for the Bitcoin core implementation.

I can write such program myself.
But why not to have a warning message in reference client?
I think such feature would be ~~useful~~... Hmm.. would be ~~interesting~~?
No. ~~Pleasant~~? Doubt. My English is poor. I can not properly define my feelings.

Do you think we need such warning in reference client? I vote for it.

bones261

legendary

Activity: 1806

Merit: 1828

This is not standard for the Bitcoin core implementation. You will probably have to find a program that monitors the blockchain and warns you if a reorg takes place. I believe several exchanges implement such warning systems in order to mitigate the damage already done by a double spend attack.

aliashraf

legendary

Activity: 1456

Merit: 1175

Always remember the cause!

No, there is not such thing.

amaclin1

sr. member

Activity: 770

Merit: 305

Is there a warning in case of ~~successful attack-51~~ block reorganization in Bitcoin Core?

Topic: Warning about block reorg? - page 2. (Read 455 times)