Full public key validation isn't necessary.

lib/script/script.js

@@ -245,7 +245,6 @@ Script.prototype.isPublicKeyHashOut = function() {
 };
 
 /**
- * @param {boolean} inaccurate - option to disable full (slow) public key validation
  * @returns {boolean} if this is a pay to public key hash input script
  */
 Script.prototype.isPublicKeyHashIn = function(inaccurate) {
@@ -259,16 +258,12 @@ Script.prototype.isPublicKeyHashIn = function(inaccurate) {
         pubkeyBuf.length
        ) {
       var version = pubkeyBuf[0];
-      var isVersion = false;
-      if (version === 0x04 && pubkeyBuf.length === 65) {
-        isVersion = true;
+      if ((version === 0x04 ||
+           version === 0x06 ||
+           version === 0x07) && pubkeyBuf.length === 65) {
+        return true;
       } else if ((version === 0x03 || version === 0x02) && pubkeyBuf.length === 33) {
-        isVersion = true;
-      }
-      if (inaccurate) {
-        return isVersion;
-      } else {
-        return PublicKey.isValid(pubkeyBuf);
+        return true;
       }
     }
   }
@@ -774,7 +769,7 @@ Script.prototype.getAddressInfo = function() {
   } else if (this.isPublicKeyHashOut()) {
     info.hashBuffer = this.getData();
     info.type = Address.PayToPublicKeyHash;
-  } else if (this.isPublicKeyHashIn(true)) {
+  } else if (this.isPublicKeyHashIn()) {
     // hash the publickey found in the scriptSig
     info.hashBuffer = Hash.sha256ripemd160(this.chunks[1].buf);
     info.type = Address.PayToPublicKeyHash;