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-rw-r--r--bip-0049.mediawiki6
1 files changed, 6 insertions, 0 deletions
diff --git a/bip-0049.mediawiki b/bip-0049.mediawiki
index 74645a1..846aefa 100644
--- a/bip-0049.mediawiki
+++ b/bip-0049.mediawiki
@@ -66,6 +66,12 @@ To derive the P2SH address from the above calculated public key, we use the enca
scriptPubKey: HASH160 <20-byte-script-hash> EQUAL
(0xA914{20-byte-script-hash}87)
+
+===Extended Key Version===
+
+When serializing extended keys, this scheme uses alternate version bytes. Extended public keys use <code>0x049d7cb2</code> to produce a "ypub" prefix, and private keys use <code>0x049d7878</code> to produce a "yprv" prefix. Testnet uses <code>0x044a5262</code> "upub" and <code>0x044a4e28</code> "uprv."
+
+
==Backwards Compatibility==
This BIP is not backwards compatible by design as described under [#considerations]. An incompatible wallet will not discover accounts at all and the user will notice that something is wrong.