orphan block reverse, reconnect

[Xivibe]

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

[1715374389]

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[ranochigo]

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.

[aliashraf]

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.

[Xivibe]

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

I'm still learning everyday.

[nc50lc]

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