orphan block reverse, reconnect | Bitcointalksearch.org

nc50lc

legendary

Activity: 2394

Merit: 5531

Self-proclaimed Genius

Quote from: Xivibe on September 13, 2019, 10:47:50 AM

I appreciate all your input! It's making more sense to me now than at that time.

I'm still learning everyday.

You seem to be interested in 51% attack... yes?
Then download Satoshi's whitepaper: https://bitcoin.org/en/bitcoin-paper, go to article 11 (Calculations).
And you'll see the chance of doing that "heist", as well as the theoretical budget that you need to execute such an attempt based from needed hash power.

You can also learn what are the possible options (not just re-connecting orphaned blocks) for the attacker;
and lastly, why merchants/services are waiting for more confirmations Wink

Xivibe

jr. member

Activity: 89

Merit: 1

I appreciate all your input! It's making more sense to me now than at that time.

I'm still learning everyday.

aliashraf

legendary

Activity: 1456

Merit: 1174

Always remember the cause!

Before it's getting too late you could hire 50%+ hashpower and commit a chain rewrite attack using the orphan block as the root of the reorg.

ranochigo

legendary

Activity: 2982

Merit: 4193

The longest valid chain is followed by the client. If you somehow have a miner work on the orphan chain and manage to overtake the other chain (difficulty-wise), then the chain that was orphaned would become the longest chain and it would be accepted universally. You can't combine the two different chains.

If not, you can just use the commands in the client to reject the other chain. This would only apply for you and you would be on a different fork than the rest of the network.

Xivibe

jr. member

Activity: 89

Merit: 1

Is there a way technically to reconnect an orphan block with a chain?

Topic: orphan block reverse, reconnect (Read 186 times)