diff --git a/src/mapper/json/mod.rs b/src/mapper/json/mod.rs
new file mode 100644
index 00000000..e69de29b
diff --git a/src/mapper/babbage.rs b/src/mapper/legacy_v1/babbage.rs
similarity index 100%
rename from src/mapper/babbage.rs
rename to src/mapper/legacy_v1/babbage.rs
diff --git a/src/mapper/byron.rs b/src/mapper/legacy_v1/byron.rs
similarity index 100%
rename from src/mapper/byron.rs
rename to src/mapper/legacy_v1/byron.rs
diff --git a/src/mapper/cip15.rs b/src/mapper/legacy_v1/cip15.rs
similarity index 100%
rename from src/mapper/cip15.rs
rename to src/mapper/legacy_v1/cip15.rs
diff --git a/src/mapper/cip25.rs b/src/mapper/legacy_v1/cip25.rs
similarity index 100%
rename from src/mapper/cip25.rs
rename to src/mapper/legacy_v1/cip25.rs
diff --git a/src/mapper/collect.rs b/src/mapper/legacy_v1/collect.rs
similarity index 100%
rename from src/mapper/collect.rs
rename to src/mapper/legacy_v1/collect.rs
diff --git a/src/mapper/map.rs b/src/mapper/legacy_v1/map.rs
similarity index 100%
rename from src/mapper/map.rs
rename to src/mapper/legacy_v1/map.rs
diff --git a/src/mapper/mod.rs b/src/mapper/legacy_v1/mod.rs
similarity index 100%
rename from src/mapper/mod.rs
rename to src/mapper/legacy_v1/mod.rs
diff --git a/src/mapper/prelude.rs b/src/mapper/legacy_v1/prelude.rs
similarity index 100%
rename from src/mapper/prelude.rs
rename to src/mapper/legacy_v1/prelude.rs
diff --git a/src/mapper/shelley.rs b/src/mapper/legacy_v1/shelley.rs
similarity index 100%
rename from src/mapper/shelley.rs
rename to src/mapper/legacy_v1/shelley.rs
diff --git a/src/mapper/wasm/mod.rs b/src/mapper/wasm/mod.rs
new file mode 100644
index 00000000..8b137891
--- /dev/null
+++ b/src/mapper/wasm/mod.rs
@@ -0,0 +1 @@
+