My opinion on the 10 block reorg protection

Assumptions (correct me if I am wrong).

• Only implemented in Bitcoin ABC
• Configurable
• A network split, the reason for the original long reorgs, is unlikely these days

Which miners will follow this rule is unknowable, but we suspect most large miners and pools use Bitcoin ABC for block generation currently, so there is a chance that it is more than half of current hashrate, The risk for a miner that do not adhere to the 10 block reorg limit, is to be left in the cold, and vice versa

When the attack comes, the attacker might slip under 50 % hashrate with the combination of the current hashrate plus some altrusitic mining, that can build on either the attack branch and slip in some blocks with transactions, making the attack branch the new branch (with unchanged rules, so no problem), or the altrusitic mining power can be put to work on the decent chain, to mitigate the attack.

Or - if the enemy hashpower succeed in choking the system with an endless chain of empty blocks, there will be no purpose of following that chain, and the rational miners will go back to the shorter but functional branch.

Worst thing that can happen is a long empty enemy chain, everybody else hashing happily on the functional chain, and then (after weeks) the enemy chain starts including transactions, and we have a de facto new coin. How would the market react? Not supportive of that chain, if you ask me. (Unless another psychopath is brough in...)

So, with or without the reorg protection, I don't think we can lose.

(But I could not imagine something like the BSV split, so don't take this as investment advice...)

submitted by /u/ErdoganTalk
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source https://www.reddit.com/r/btc/comments/azakoj/my_opinion_on_the_10_block_reorg_protection/