When Bitcoin Cash (BCH) was created, it shared the same address format as bitcoin. In an effort to alleviate any confusion for users of both digital currencies, BCH developers later proposed a new unique format for BCH addresses called CashAddr. This new address format will help users more easily distinguish between bitcoin and BCH addresses. The updated format only changes how BCH addresses are displayed, not the underlying private and public keys.
Each BCH address also has a “legacy address,” which is its corresponding bitcoin address. Going forward, the Blockchain wallet will only display the corresponding CashAddr addresses. Users can continue to send and receive using legacy BCH addresses, but we recommend using the new format for an optimal user experience.
BCH addresses in the Blockchain wallet now look like this (Note: this is just an example address. Do not send funds to this address): qp3wjpa3tjlj042z2wv7hahsldgwhwy0rq9sywjpyy.
They can also have a prefix (bitcoincash:qp3wjpa3tjlj042z2wv7hahsldgwhwy0rq9sywjpyy).
For more details on this update, check out our FAQ blog post.