Bitcoin

You're defining hack as a very small subset of what an actual hack is. Many, many exchanges have been hacked due to security flaws, or phishing attacks, etc. You're clearly defining "hack" to mean a protocol 0-day or something like that, which is honestly ridiculous.

Or you can just go ahead and generate valid wallets and hope that there's money in them. https://github.com/DavidMGilbert/btc-hack

That’s not downtime, that’s congestion. It never stopped processing transactions. If you paid a high fee, you would go through immediately. And that’s happened rarely and doesn’t effect lightning transactions which are the ones you use if speed is a priority.

-_- you're insane. good luck.