The support for multiple private keys has been implemented.

* An address for ECDSA: e.g (S …)
* An address for Quantum AI-resistant: e.g. (sora1 …)
* An address for Quantum AI-resistant Schnorr aggregated signatures (5000 keys): e.g. (sora1 …)
* Ethereum-style address: e.g. (0x …)