UPDATE:
Got to the bottom of this. Yes, Titan site is broken, this was the error message received when I entered the coins first bits: THAT CODE DOES NOT MATCH ANY KNOWN COINS. PLEASE RETRY YOUR ENTRY.
When same first bits were entered into walletexplorer.com, it took me here https://www.walletexplorer.com/address/1KkwyhWYVV9MeM7o7JiUoVMXy1QsSEf4Ky?from_firstbits=1KKwYhWy which made me realize that the address in the URL was wrong, as the third character in the first bits of this addy is lower-case, which you can see referenced in the URL above (1KkwyhWYVV9MeM7o7JiUoVMXy1QsSEf4Ky?from_firstbits=1KKwYhWy). Thanks to some sluething by Krogoth, it was discovered that a 9th character was needed to access the address and original funding TxID on walletexplorer.com. Takeaway is that if you can't find your address on walletexplorer with the 8 visible characters (first bits) on your coins, you might want to cycle through the 16 characters we're all familiar with and see if adding a 9th character finds it before you peel your coin! Every lesson has a price, this one's on me~

Will be raffling off a peeled Titan in the coming days!