www.deadcoins.com

On this website you can check all dead coins

I had a lot of money into a coin called OysterShell, at the time it was VERY promising, I bought a bag of coins and left on exchange...

...some months after, I checked and the coin was dead, zero value and no blockchain to transfer, really dead

At least I learnt the lesson and now I have only 5 coins, and the good ones, no random alts for me