diff --git a/libs/aarch64-apple-darwin/librln.a b/libs/aarch64-apple-darwin/librln.a
index fc1c7c3..410c542 100644
Binary files a/libs/aarch64-apple-darwin/librln.a and b/libs/aarch64-apple-darwin/librln.a differ
diff --git a/libs/x86_64-apple-darwin/librln.a b/libs/x86_64-apple-darwin/librln.a
index 851b94b..d70defb 100644
Binary files a/libs/x86_64-apple-darwin/librln.a and b/libs/x86_64-apple-darwin/librln.a differ
diff --git a/rln/librln.h b/rln/librln.h
index 60e4545..65432b1 100644
--- a/rln/librln.h
+++ b/rln/librln.h
@@ -39,6 +39,8 @@ bool delete_leaf(struct RLN *ctx, uintptr_t index);
 
 bool set_leaf(struct RLN *ctx, uintptr_t index, const struct Buffer *input_buffer);
 
+bool get_leaf(struct RLN *ctx, uintptr_t index, struct Buffer *output_buffer);
+
 bool set_next_leaf(struct RLN *ctx, const struct Buffer *input_buffer);
 
 bool set_leaves_from(struct RLN *ctx, uintptr_t index, const struct Buffer *input_buffer);
@@ -88,6 +90,12 @@ bool recover_id_secret(const struct RLN *ctx,
                        const struct Buffer *input_proof_buffer_2,
                        struct Buffer *output_buffer);
 
+bool set_metadata(struct RLN *ctx, const struct Buffer *input_buffer);
+
+bool get_metadata(const struct RLN *ctx, struct Buffer *output_buffer);
+
+bool flush(struct RLN *ctx);
+
 bool hash(const struct Buffer *input_buffer, struct Buffer *output_buffer);
 
 bool poseidon_hash(const struct Buffer *input_buffer, struct Buffer *output_buffer);