Replace placeholder 'bip352' / 'bip47_rpa' with the finalized
extension names from the BCR post and BCH Stealth Protocol spec:
- bip352 → bch_stealth_bip352
- bip47_rpa → rpa_bip47
Add spend_path / scan_path fields to each extension handshake
object, pointing to the hardened gate paths where the wallet
exports xpubs. Dapps derive the non-hardened /0 child locally.
Add rpa_spend / rpa_scan path names alongside stealth_spend /
stealth_scan in all examples. Update known extensions table with
full path information and BCR reference links.
Spec: https://bitcoincashresearch.org/t/ecdh-stealth-addresses-on-bitcoin-cash-implementation-code/1773/5
I have read the CLA Document and I hereby sign the CLA
This backward compatible change allows wallets/dapps to add additional
features outside the basic transaction signature support to the
hdwalletv1 protocol.
