Bc.info is only ONE service. They are being ddos since they are the most popular.
These addresses have 3k inputs. So clients like electric don't store the full blockchain so it's crashing when you tryou to imortgage these keys.
If you had a full node running you would already have the dust txs and their scriptpubkeys, v_outs, etc required to create a transaction.
It is actually easy for addresses with 3k inputs compared to the one with 0.53BTC. Electrum can't handle either. The one that I tried to import had over 50k inputs, and it was impossible to do anything with it even using Bitcoin Core.
More free coins.
More like free 'stress testers' for you guys. It would be fun if you were actually convicted because of what you're doing right now. It is pretty clear to most.
Synchronizing with network ....
|||||| ___ ___ ___ ___ ___ ___ ___ ___ ___ ___ OK I'll come back in a week

Won't work with electrum, don't even try it.