I've managed to dumpwallet from bitcoin core and now i have master private key together with wallet list and private keys file.
How do I check balance quickly without checking 1000 adresses and without sync of btc core? that will take days
If you also have the list of public of your wallet then you can paste it on this tool below to check all balances of these addresses.
- https://bitcoindata.science/bitcoin-balance-check.html
Or you can follow this one "Bitcoin address mass balance checker [Tutorial and code]"
Thanks for mentioning this service.
There is a limitation of some addresses. If you try to check 10-20 addresses I believe it will work without much problems. However, if you have more than 20 addresses, the API will most likely stop due to limits.
An alternative would be to check in batches if you have lots of addresses to check.