Hi !

I'm looking for a website helping to find lost wallet bitcoins by using its spent transactions history.
Like a specific bitcoin blockchain explorer focusing on debit / spend transactions only, avoiding small amounts.

After finding the last spent transactions, the service will monitor the last address where the spent coins are
up to go to a known address where you can you can claims your coins.

Do you know if a service like that exist ?

Well, the truth is that I'm building something similar to learn blockchain coding, I dont want to make more work on it
if it's already exist or if doesn't make interest to others.

Waiting for your replies. If the service is interesting some one telle me, I will provide the url for testing when available

PS: bonus question : I found some website refenrencing famous bitcoin address (scam or donations) do you kown if the is a service just asying hey this bitcoin address is a bittrex address or another exchange or any service/shop accepting bitcoins ?