After announcing support for digital signatures and public and private encryption keys, which could be used to represent cryptocurrencies, an Apple executive on Thursday made it clear the company is watching blockchain-based digitalcurrencies.This past spring, Apple announced CryptoKit for iOS 13, which will allow developers to easily create hashes for digital signatures and public and private keys that can be stored and managed by Apple's Secure Enclave.

Those keys, which can represent cryptocurrencies, can then be exchanged by iPhone owners as a form of payment through an app.