some one running at their own local electrumx server ?
i need to check 1m addresses with their balances and used before addressses
i will give you addresses and python script for check, if you have local installed and running electrumx server
I don't run ElectrumX server. But you could download list of all funded address[1], then create script which load both files (your 1M address and list of all funded address) and perform the check. Using library which have efficient filter/data structure (such as bloom filter or trie) is recommended.
[1]
http://addresses.loyce.club/i already have his used addresses listed dated dec 2021
new list download required 33gb data download, time required...
anyway i have 2nd option to use it