diff --git a/testing/data/b143a_funding.psbt b/testing/data/b143a_funding.psbt
new file mode 100644
index 00000000..6e3a651e
--- /dev/null
+++ b/testing/data/b143a_funding.psbt
@@ -0,0 +1 @@
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diff --git a/testing/data/b143a_mod1.psbt b/testing/data/b143a_mod1.psbt
new file mode 100644
index 00000000..200908ca
--- /dev/null
+++ b/testing/data/b143a_mod1.psbt
@@ -0,0 +1,2 @@
+cHNidP8BAHsCAAAAAvWQdWOR55O5yE/kB3retPc7AiK931LtdvM5Gy+CJfQBAQAAAAD+////4KE7wW4JfRwtjiCYQjX7xHm/L7xEZ6+/K7N4upxFAIIBAAAAAP7///8BAPkClQAAAAAWABQgZnQ/0g98dLsT6XvtGvQff/khbQAAAAAAAQEf6GjNHQAAAAAWABRZ9Wg33Hjm1+1csYhty3+fgAM7GCIGAmV4mAHkuIROdPvvReL8L0qRLsJ1NRdKIw4A1/DruhkvGNGiJqlUAACAAQAAgAAAAIAAAAAAAAAAAAABAR8AlDV3AAAAABYAFFNzDjOFWVyG7cBE6WcGOehWzEpWIgYD+xFJc7EeUOSg/IMXhYcVUBo2YUNvUggoHP6jg0weTWEY0aImqVQAAIABAACAAAAAgAAAAAABAAAAAAA=
+
diff --git a/testing/data/b143a_mod2.psbt b/testing/data/b143a_mod2.psbt
new file mode 100644
index 00000000..09f5f098
--- /dev/null
+++ b/testing/data/b143a_mod2.psbt
@@ -0,0 +1,2 @@
+cHNidP8BAHsCAAAAAvWQdWOR55O5yE/kB3retPc7AiK931LtdvM5Gy+CJfQBAQAAAAD+////4KE7wW4JfRwtjiCYQjX7xHm/L7xEZ6+/K7N4upxFAIIBAAAAAP7///8BAPkClQAAAAAWABQgZnQ/0g98dLsT6XvtGvQff/khbQAAAAAAAQEfAC9oWQAAAAAWABRZ9Wg33Hjm1+1csYhty3+fgAM7GCIGAmV4mAHkuIROdPvvReL8L0qRLsJ1NRdKIw4A1/DruhkvGNGiJqlUAACAAQAAgAAAAIAAAAAAAAAAAAABAR/ozZo7AAAAABYAFFNzDjOFWVyG7cBE6WcGOehWzEpWIgYD+xFJc7EeUOSg/IMXhYcVUBo2YUNvUggoHP6jg0weTWEY0aImqVQAAIABAACAAAAAgAAAAAABAAAAAAA=
+