Edited ch04_keys.adoc with Atlas code editor

ch04_keys.adoc

@@ -651,7 +651,7 @@ the wallet software as a valid destination, an error that would
 otherwise result in loss of funds.
 
 To convert data (a number) into a base58check format, we first add a
-prefix to the data, called ((("version prefixes")))the "version byte," which serves to easily
+prefix to the data, called ((("version prefixes", id="version-prefix")))the "version byte," which serves to easily
 identify the type of data that is encoded. For example, the prefix zero
 (0x00 in hex) indicates that the data should be used as the commitment (hash) in
 a legacy P2PKH output script.  A list of common version prefixes is shown
@@ -737,7 +737,7 @@ version prefixes and the resulting base58 characters are shown in
 
 Putting together public keys, hash-based commitments, and base58check
 encoding, we can see the illustration of the conversion of a public key
-into a Bitcoin address((("public key cryptography", "base58check encoding", startref="pub-key-base58")))((("base58check encoding", startref="base58")))((("encoding", "base58check", startref="encode-base58"))) in <<pubkey_to_address>>.
+into a Bitcoin address((("public key cryptography", "base58check encoding", startref="pub-key-base58")))((("base58check encoding", startref="base58")))((("encoding", "base58check", startref="encode-base58")))((("version prefixes", startref="version-prefix"))) in <<pubkey_to_address>>.
 
 [[pubkey_to_address]]
 .Public key to Bitcoin address: conversion of a public key into a Bitcoin address