No , they only need 51% with a PoW coin,
but it is the same as having a loaded gun, if no one pulls the trigger then no one gets hurt,
as long as the top 4 mining pool operators don't collude to pull off a 51% attack, then no harm.
But you are not trusting hashrate to secure bitcoin, you are trusting the top 4 mining pool operators.
but it is the same as having a loaded gun, if no one pulls the trigger then no one gets hurt,
as long as the top 4 mining pool operators don't collude to pull off a 51% attack, then no harm.
But you are not trusting hashrate to secure bitcoin, you are trusting the top 4 mining pool operators.
People trust those pool prefer steady and stable income by being honest rather than quick profit (e.g. fooling exchange/merchant by double-spend sent Bitcoin) by perform 51% attack.
Your statement is only true if they prefer quick profit, don't care about losing money/reputation or pool operator is being illogical or Coerced!
bitcoin has always recommended waiting 3 confirmations.
bitcoin don't have conscious nor intelligence to make such recommendation
Someone woke up on the literal side of their bed this morning.
Clarification:
Most Bitcoin exchanges recommended waiting 3 confirmations for deposits before considering a transaction complete.
Satoshi originally recommended waiting 6 confirmations.
The point is only fools recommend zero confirmations for any coin.
FYI:
https://www.buybitcoinworldwide.com/confirmations/
Quote
How many Bitcoin Confirmations are Enough?
0
Payments with 0 confirmations can still be reversed! Wait for at least one.
1
One confirmation is enough for small Bitcoin payments less than $1,000.
3
Enough for payments $1,000 - $10,000. Most exchanges require 3 confirmations for deposits.
6
Enough for large payments between $10,000 - $1,000,000. Six is standard for most transactions to be considered secure.
60
Suggested for large payments greater than $1,000,000. Less is likely fine, but this is to be safe!
0
Payments with 0 confirmations can still be reversed! Wait for at least one.
1
One confirmation is enough for small Bitcoin payments less than $1,000.
3
Enough for payments $1,000 - $10,000. Most exchanges require 3 confirmations for deposits.
6
Enough for large payments between $10,000 - $1,000,000. Six is standard for most transactions to be considered secure.
60
Suggested for large payments greater than $1,000,000. Less is likely fine, but this is to be safe!