bitcore BTX – CONVERTER
Converter from the old BTX public address format to the new BTX public address format
Wallets 1xxx -> 2xxx
Wallets 3xxx -> sxxx
Wallets bc1 -> btx
If you want to withdraw, mine or send money to an old wallet address, just convert it.
More information here: https://bitcore.cc/important-update-bitcore-public-keys/