⭐ Merited by garlonicon (1)
I'm guessing the most plausible things you can remember here would be the amount and a more accurate time of transaction, this ca narrow down the search a lot further.
I think it must have been 2018, but I could be off. I can't narrow it down more accurately. I know the input amounts, the sum of that minus the transaction fee is on the address I'm looking for.Quote
If you do get the amount and it's less insignificant, it will make the 'I told you sos' more fun'.
Over time, when the value increases, it's going to be more fun 
I don't remember the address.
I remember the amount on 2 addresses used to fund it.
Can you work it another way? Did you send them from a wallet you control?I remember the amount on 2 addresses used to fund it.
Quote
If so can you narrow down the info from there?
I'm considering writing a script to search all block data, to narrow it down. That's going to be a lot of work though, and even if I know the exact address, that doesn't solve my problem. But it would make it easier to know when I have the correct key.Quote
If it's an amount you don't mind loosing then stop worrying about using an air gapped system that is taking you more time and effort. You are more likely to make a mistake and miss the fact they yes you did find the addresses & keys.
I would trust my normal computer with this amount, but since I'm using a browser to do the encryption, I don't want it to have internet access. And I would prefer to keep the passphrases secure for future use: I can only remember a few long passphrases with a high degree of certainty for a very long time. If I have to come up with a new one, chances are I'll forget it at some point.Quote
Other then to see if you could was there another reason for this? Perhaps something else that may help you remember.
i.e. I was annoyed at DaveF when I did this so I vanitygenned 1FuckDave as one of the addresses?
Lol. Nope, the address came from a BIP38 brain wallet as described.i.e. I was annoyed at DaveF when I did this so I vanitygenned 1FuckDave as one of the addresses?
I have been trying the second website which is now a scam website. I tried it just to know how the encryption is but if you try anything with passphrase on the site, it will keep on loading and not give you any result. I just want to test it, not use it.
I have an old version, from before the site got sold. You may still be able to find it on Github.Quote
If it is on bitaddress, it will always give you the same encryption if you use the same passphrase to encrypt the private key.
I'll do some more testing with this.I'm currently new to these though but can you retry same process over and over again on empty wallets ??
Yes. Actually, all I get is empty wallets.I should have just posted a BIP38 encrypted key on Bitcointalk as a backup