diff --git a/reference/rust-codex32/src/lib.rs b/reference/rust-codex32/src/lib.rs
index 06dc35d..f42fae4 100644
--- a/reference/rust-codex32/src/lib.rs
+++ b/reference/rust-codex32/src/lib.rs
@@ -570,22 +570,26 @@ mod tests {
     #[test]
     fn bip_invalid_bad_checksums() {
         let bad_checksums = [
-            "ms10testsxxxxxxxxxxxxxxxxxxxxxxxxxxxxmazxdp4sx5q",
-            "ms10testsxxxxxxxxxxxxxxxxxxxxxxxxxxxq70v3y94304t",
-            "ms10testsxxxxxxxxxxxxxxxxxxxxxxxxxxxxg4m2aylswft",
-            "ms10testsxxxxxxxxxxxxxxxxxxxxxxxxxxxxght46zhq0x4",
-            "ms10testsxxxxxxxxxxxxxxxxxxxxxxxxxxxl8jqrdhvqkc4",
-            "ms10testsxxxxxxxxxxxxxxxxxxxxxxxxxxxxepvjkxnc9wu",
-            "ms10testsxxxxxxxxxxxxxxxxxxxxxxxxxxxxcakee32853f",
-            "ms10testsxxxxxxxxxxxxxxxxxxxxxxxxxxx4nknfgj6u67a",
-            "ms10testsxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx3n5n5gyweuvq3",
-            "ms10testsxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxjqllfg3pf3fv4",
-            "ms10testsxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxn0c66xf2j0kjn",
-            "ms10testsxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxh73jw8glx8fpk",
-            "ms10testsyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyymjljntsznrq3mv",
-            "ms10testsxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx0p99y5vsmt84t",
-            "ms10testsxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxj4r3qrklkmtsz",
-            "ms10testsxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx8kp950klmrlsm",
+            "ms10fauxsxxxxxxxxxxxxxxxxxxxxxxxxxxve740yyge2ghq",
+            "ms10fauxsxxxxxxxxxxxxxxxxxxxxxxxxxxve740yyge2ghp",
+            "ms10fauxsxxxxxxxxxxxxxxxxxxxxxxxxxxxxlk3yepcstwr",
+            "ms10fauxsxxxxxxxxxxxxxxxxxxxxxxxxxxx6pgnv7jnpcsp",
+            "ms10fauxsxxxxxxxxxxxxxxxxxxxxxxxxxxxx0cpvr7n4geq",
+            "ms10fauxsxxxxxxxxxxxxxxxxxxxxxxxxxxxxm5252y7d3lr",
+            "ms10fauxsxxxxxxxxxxxxxxxxxxxxxxxxxxxrd9sukzl05ej",
+            "ms10fauxsxxxxxxxxxxxxxxxxxxxxxxxxxxxxc55srw5jrm0",
+            "ms10fauxsxxxxxxxxxxxxxxxxxxxxxxxxxxxxgc7rwhtudwc",
+            "ms10fauxsxxxxxxxxxxxxxxxxxxxxxxxxxxx4gy22afwghvs",
+            "ms10fauxsxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxme084q0vpht7pe0",
+            "ms10fauxsxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxme084q0vpht7pew",
+            "ms10fauxsxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxqyadsp3nywm8a",
+            "ms10fauxsxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxzvg7ar4hgaejk",
+            "ms10fauxsxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxcznau0advgxqe",
+            "ms10fauxsxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxch3jrc6j5040j",
+            "ms10fauxsxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx52gxl6ppv40mcv",
+            "ms10fauxsxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx7g4g2nhhle8fk",
+            "ms10fauxsxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx63m45uj8ss4x8",
+            "ms10fauxsxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxy4r708q7kg65x",
         ];
         for chk in bad_checksums {
             if let Err(Error::InvalidChecksum { .. }) = Codex32String::from_string(chk.into()) {
@@ -599,16 +603,16 @@ mod tests {
         }
 
         let wrong_checksums = [
-            "ms10testsxxxxxxxxxxxxxxxxxxxxxxxx372x3mkc5m8sa0q",
-            "ms10testsxxxxxxxxxxxxxxxxxxxxxxxxxx82zvxjc02rt0vnl",
-            "ms10testsxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxyc57nnpvpcnhggt",
-            "ms10testsxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxf9e2wxsusjgmlws",
-            "ms10testsxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxdpu39xl2lkru3g4",
-            "ms10testsxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxqelpaxwk0jz4e",
-            "ms10testsxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxncdn5kjxq7grt",
-            "ms10testsxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxhq00y08vc7gjg",
-            "ms10testsxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxdckj6wn4z7r3p",
-            "ms10testsxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxjl32g6u3wgg8j",
+            "ms10fauxsxxxxxxxxxxxxxxxxxxxxxxxxurfvwmdcmymdufv",
+            "ms10fauxsxxxxxxxxxxxxxxxxxxxxxxxxxxcsyppjkd8lz4hx3",
+            "ms10fauxsxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxu6hwvl5p0l9xf3c",
+            "ms10fauxsxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxwqey9rfs6smenxa",
+            "ms10fauxsxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxv70wkzrjr4ntqet",
+            "ms10fauxsxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx3hmlrmpa4zl0v",
+            "ms10fauxsxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxrfggf88znkaup",
+            "ms10fauxsxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxpt7l4aycv9qzj",
+            "ms10fauxsxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxus27z9xtyxyw3",
+            "ms10fauxsxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxcwm4re8fs78vn",
         ];
         for chk in wrong_checksums {
             let err = Codex32String::from_string(chk.into());
@@ -628,20 +632,20 @@ mod tests {
     #[test]
     fn bip_invalid_improper_length() {
         let bad_length = [
-            "ms10testsxxxxxxxxxxxxxxxxxxxxxxxx8ty2gx0n6rnaa",
-            "ms10testsxxxxxxxxxxxxxxxxxxxxxxxxxus2h522w7u6vq",
-            "ms10testsxxxxxxxxxxxxxxxxxxxxxxxxxxxc8d60uanwukvn",
-            "ms10testsxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxwaaaq5yk0vfeg",
-            "ms10testsxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxu9cfgk0a4muxaam",
-            "ms10testsxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxzu2kdncfaew65ae",
-            "ms10testsxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxpsx45vtf9n2uk5h",
-            "ms12testxxxxxxxxxxxxxxxxxxxxxxxxxtn5jkk94ayuqc",
-            "ms12testxxxxxxxxxxxxxxxxxxxxxxxxxxvspjygypsrrkl",
-            "ms12testxxxxxxxxxxxxxxxxxxxxxxxxxxxxqmufxffdkzfac",
-            "ms12testxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxmgr4z3c807ml7",
-            "ms12testxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx4q3s54t8ejm8dfj",
-            "ms12testxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxr0wzwtfvgh3th2",
-            "ms12testxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxcpkhsxdrp05hymv",
+            "ms10fauxsxxxxxxxxxxxxxxxxxxxxxxxxw0a4c70rfefn4",
+            "ms10fauxsxxxxxxxxxxxxxxxxxxxxxxxxxk4pavy5n46nea",
+            "ms10fauxsxxxxxxxxxxxxxxxxxxxxxxxxxxx9lrwar5zwng4w",
+            "ms10fauxsxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxr335l5tv88js3",
+            "ms10fauxsxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxvu7q9nz8p7dj68v",
+            "ms10fauxsxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxpq6k542scdxndq3",
+            "ms10fauxsxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxkmfw6jm270mz6ej",
+            "ms12fauxxxxxxxxxxxxxxxxxxxxxxxxxxzhddxw99w7xws",
+            "ms12fauxxxxxxxxxxxxxxxxxxxxxxxxxxxx42cux6um92rz",
+            "ms12fauxxxxxxxxxxxxxxxxxxxxxxxxxxxxxarja5kqukdhy9",
+            "ms12fauxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxky0ua3ha84qk8",
+            "ms12fauxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx9eheesxadh2n2n9",
+            "ms12fauxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx9llwmgesfulcj2z",
+            "ms12fauxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx02ev7caq6n9fgkf",
         ];
         for chk in bad_length {
             let err = Codex32String::from_string(chk.into());
@@ -661,7 +665,7 @@ mod tests {
     #[test]
     fn bip_invalid_misc() {
         if let Err(Error::InvalidShareIndex(..)) =
-            Codex32String::from_string("ms10testxxxxxxxxxxxxxxxxxxxxxxxxxxxx3wq9mzgrwag9".into())
+            Codex32String::from_string("ms10fauxxxxxxxxxxxxxxxxxxxxxxxxxxxx0z26tfn0ulw3p".into())
         {
             // ok
         } else {
@@ -669,7 +673,7 @@ mod tests {
         }
 
         if let Err(Error::InvalidThreshold(..)) =
-            Codex32String::from_string("ms1testxxxxxxxxxxxxxxxxxxxxxxxxxxxxs9lz3we7s9wh4".into())
+            Codex32String::from_string("ms1fauxxxxxxxxxxxxxxxxxxxxxxxxxxxxxda3kr3s0s2swg".into())
         {
             // ok
         } else {
@@ -683,11 +687,13 @@ mod tests {
     #[test]
     fn bip_invalid_case() {
         let bad_case = [
-            "MS10testsxxxxxxxxxxxxxxxxxxxxxxxxxx4nzvca9cmczlw",
-            "ms10TESTsxxxxxxxxxxxxxxxxxxxxxxxxxx4nzvca9cmczlw",
-            "ms10testSxxxxxxxxxxxxxxxxxxxxxxxxxx4nzvca9cmczlw",
-            "ms10testsXXXXXXXXXXXXXXXXXXXXXXXXXX4nzvca9cmczlw",
-            "ms10testsxxxxxxxxxxxxxxxxxxxxxxxxxx4NZVCA9CMCZLW",
+            "Ms10fauxsxxxxxxxxxxxxxxxxxxxxxxxxxxuqxkk05lyf3x2",
+            "mS10fauxsxxxxxxxxxxxxxxxxxxxxxxxxxxuqxkk05lyf3x2",
+            "MS10fauxsxxxxxxxxxxxxxxxxxxxxxxxxxxuqxkk05lyf3x2",
+            "ms10FAUXsxxxxxxxxxxxxxxxxxxxxxxxxxxuqxkk05lyf3x2",
+            "ms10fauxSxxxxxxxxxxxxxxxxxxxxxxxxxxuqxkk05lyf3x2",
+            "ms10fauxsXXXXXXXXXXXXXXXXXXXXXXXXXXuqxkk05lyf3x2",
+            "ms10fauxsxxxxxxxxxxxxxxxxxxxxxxxxxxUQXKK05LYF3X2",
         ];
         for chk in bad_case {
             let err = Codex32String::from_string(chk.into());