diff --git a/librustzcash-wrapper/src/lib.rs b/librustzcash-wrapper/src/lib.rs
index f9a144d..821019f 100644
--- a/librustzcash-wrapper/src/lib.rs
+++ b/librustzcash-wrapper/src/lib.rs
@@ -170,7 +170,7 @@ use bech32::{
 pub enum RW {}
 pub const RW: PhantomData<RW> = PhantomData;
 
-#[derive(BorshSerialize, BorshDeserialize)]
+#[derive(Debug, BorshSerialize, BorshDeserialize)]
 pub struct RawData {
     hrp: Vec<u8>,
     bytes: Vec<u8>
@@ -190,7 +190,7 @@ impl<RW> ToHaskell<RW> for RawData {
     //}
 //}
 
-#[derive(BorshSerialize, BorshDeserialize)]
+#[derive(Debug, BorshSerialize, BorshDeserialize)]
 pub struct HrawTx {
     bytes: Vec<u8>,
     s: bool,
@@ -204,7 +204,7 @@ impl<RW> ToHaskell<RW> for HrawTx {
     }
 }
 
-#[derive(BorshSerialize, BorshDeserialize)]
+#[derive(Debug, BorshSerialize, BorshDeserialize)]
 pub struct HshieldedOutput {
     pub cv: Hhex,
     cmu: Hhex,
@@ -248,7 +248,7 @@ impl HshieldedOutput {
     }
 }
 
-#[derive(BorshSerialize, BorshDeserialize)]
+#[derive(Debug, BorshSerialize, BorshDeserialize)]
 pub struct Hhex {
     bytes: Vec<u8>
 }
@@ -261,7 +261,7 @@ impl<RW> ToHaskell<RW> for Hhex {
 }
 
 
-#[derive(BorshSerialize, BorshDeserialize)]
+#[derive(Debug, BorshSerialize, BorshDeserialize)]
 pub struct Haction {
     nf: Hhex,
     rk: Hhex,
@@ -290,7 +290,7 @@ impl Haction {
     }
 }
 
-#[derive(BorshSerialize, BorshDeserialize)]
+#[derive(Debug, BorshSerialize, BorshDeserialize)]
 pub struct Hnote {
     note: u64,
     recipient: Vec<u8>,
@@ -307,7 +307,7 @@ impl<RW> ToHaskell<RW> for Hnote {
     }
 }
 
-#[derive(BorshSerialize, BorshDeserialize)]
+#[derive(Debug, BorshSerialize, BorshDeserialize)]
 pub struct Hrseed {
     kind: u8,
     bytes: Vec<u8>
@@ -328,7 +328,7 @@ impl<RW> ToHaskell<RW> for Hrseed {
     }
 }
 
-#[derive(BorshSerialize, BorshDeserialize)]
+#[derive(Debug, BorshSerialize, BorshDeserialize)]
 pub struct Hua {
     net: u8,
     o_rec: Vec<u8>,
@@ -361,7 +361,7 @@ impl Hua {
     }
 }
 
-#[derive(BorshSerialize, BorshDeserialize)]
+#[derive(Debug, BorshSerialize, BorshDeserialize)]
 pub struct Htx {
     txid: Vec<u8>,
     locktime: u32,
@@ -379,7 +379,7 @@ impl<RW> ToHaskell<RW> for Htx {
 }
 
 
-#[derive(BorshSerialize, BorshDeserialize)]
+#[derive(Debug, BorshSerialize, BorshDeserialize)]
 pub struct HTBundle {
     empty: bool,
     vin: Vec<HTxIn>,
@@ -400,7 +400,7 @@ impl HTBundle {
     }
 }
 
-#[derive(BorshSerialize, BorshDeserialize)]
+#[derive(Debug, BorshSerialize, BorshDeserialize)]
 pub struct HTxIn {
     outpoint: Houtpoint,
     script: Vec<u8>,
@@ -420,7 +420,7 @@ impl HTxIn {
     }
 }
 
-#[derive(BorshSerialize, BorshDeserialize)]
+#[derive(Debug, BorshSerialize, BorshDeserialize)]
 pub struct HTxOut {
     amt: i64,
     script: Vec<u8>
@@ -449,7 +449,7 @@ impl HTxOut {
     }
 }
 
-#[derive(BorshSerialize, BorshDeserialize)]
+#[derive(Debug, BorshSerialize, BorshDeserialize)]
 pub struct Houtpoint {
     hash: Vec<u8>,
     index: u32
@@ -479,7 +479,7 @@ impl Houtpoint {
     }
 }
 
-#[derive(BorshSerialize, BorshDeserialize)]
+#[derive(Debug, BorshSerialize, BorshDeserialize)]
 pub struct HtransparentInput {
     sk: Vec<u8>,
     utxo: Houtpoint,
@@ -500,7 +500,7 @@ impl<RW> ToHaskell<RW> for HtransparentInput {
     }
 }
 
-#[derive(BorshSerialize, BorshDeserialize)]
+#[derive(Debug, BorshSerialize, BorshDeserialize)]
 pub struct HSBundle {
     empty: bool,
     spends: Vec<Hspend>,
@@ -523,7 +523,7 @@ impl HSBundle {
     }
 }
 
-#[derive(BorshSerialize, BorshDeserialize)]
+#[derive(Debug, BorshSerialize, BorshDeserialize)]
 pub struct Hspend {
     cv: Hhex,
     anchor: Hhex,
@@ -552,7 +552,7 @@ impl Hspend {
     }
 }
 
-#[derive(BorshSerialize, BorshDeserialize)]
+#[derive(Debug, BorshSerialize, BorshDeserialize)]
 pub struct HsaplingInput {
     sk: Vec<u8>,
     note: Hnote,
@@ -567,7 +567,7 @@ impl<RW> FromHaskell<RW> for HsaplingInput {
 }
 
 
-#[derive(BorshSerialize, BorshDeserialize)]
+#[derive(Debug, BorshSerialize, BorshDeserialize)]
 pub struct HorchardInput {
     sk: Vec<u8>,
     note: Hnote,
@@ -581,7 +581,7 @@ impl<RW> FromHaskell<RW> for HorchardInput {
     }
 }
 
-#[derive(BorshSerialize, BorshDeserialize)]
+#[derive(Debug, BorshSerialize, BorshDeserialize)]
 pub struct Houtput {
     kind: u8,
     ovk: Vec<u8>,
@@ -598,7 +598,7 @@ impl<RW> FromHaskell<RW> for Houtput {
     }
 }
 
-#[derive(BorshSerialize, BorshDeserialize)]
+#[derive(Debug, BorshSerialize, BorshDeserialize)]
 pub struct HOBundle {
     empty: bool,
     actions: Vec<Haction>,
@@ -623,7 +623,7 @@ impl HOBundle {
 }
 
 
-#[derive(BorshSerialize, BorshDeserialize)]
+#[derive(Debug, BorshSerialize, BorshDeserialize)]
 pub struct Hflags {
     spends: bool,
     outputs: bool
@@ -642,7 +642,7 @@ impl Hflags {
     }
 }
 
-#[derive(BorshSerialize, BorshDeserialize)]
+#[derive(Debug, BorshSerialize, BorshDeserialize)]
 pub struct Hufvk {
     net: u8,
     orchard: Vec<u8>,
@@ -671,7 +671,7 @@ impl Hufvk {
     }
 }
 
-#[derive(BorshSerialize, BorshDeserialize)]
+#[derive(Debug, BorshSerialize, BorshDeserialize)]
 pub struct Hsvk {
     vk: Vec<u8>,
     ovk: Vec<u8>
@@ -795,7 +795,7 @@ pub extern "C" fn rust_wrapper_svk_decode(
             true
         }
         Err(e) => {
-            print!("{}", e);
+            print!("{:?}", e);
             false
         }
     }
@@ -1656,7 +1656,7 @@ pub extern "C" fn rust_wrapper_create_transaction(
             None
         }
     };
-    println!(sap_anchor);
+    println!("{:?}", sap_anchor);
     let orch_wit_in: Vec<u8> = marshall_from_haskell_var(orch_wit, orch_wit_len, RW);
     let orch_wit_reader = Cursor::new(orch_wit_in);
     let orch_iw: Option<IncrementalWitness<MerkleHashOrchard, 32>> = read_incremental_witness(orch_wit_reader).ok();
@@ -1668,12 +1668,12 @@ pub extern "C" fn rust_wrapper_create_transaction(
             None
         }
     }; 
-    println!(orch_anchor);
+    println!("{:?}", orch_anchor);
     let build_config = BuildConfig::Standard {sapling_anchor: sap_anchor, orchard_anchor: orch_anchor};
     let mut main_builder = Builder::new(MainNetwork, BlockHeight::from(bl_height), build_config);
     let mut test_builder =  Builder::new(TestNetwork, BlockHeight::from(bl_height), build_config);
     let trans_input: Vec<HtransparentInput> = marshall_from_haskell_var(t_input, t_input_len, RW);
-    println!(trans_input);
+    println!("{:?}", trans_input);
     for t_in in trans_input {
         if t_in.sk.len() > 1 {
             let k = SecretKey::from_slice(&t_in.sk).unwrap();
@@ -1697,7 +1697,7 @@ pub extern "C" fn rust_wrapper_create_transaction(
         }
     }
     let sap_input: Vec<HsaplingInput> = marshall_from_haskell_var(s_input, s_input_len, RW);
-    println!(sap_input);
+    println!("{:?}", sap_input);
     for s_in in sap_input {
         if s_in.sk.len() > 1 {
             let sp_key = ExtendedSpendingKey::from_bytes(&s_in.sk);
@@ -1726,7 +1726,7 @@ pub extern "C" fn rust_wrapper_create_transaction(
         }
     }
     let orch_input: Vec<HorchardInput> = marshall_from_haskell_var(o_input, o_input_len, RW);
-    println!(orch_input);
+    println!("{:?}", orch_input);
     for o_in in orch_input {
         if o_in.sk.len() > 1 {
             let sp_key = SpendingKey::from_bytes(o_in.sk[0..32].try_into().unwrap()).unwrap();
@@ -1746,7 +1746,7 @@ pub extern "C" fn rust_wrapper_create_transaction(
         }
     }
     let outputs: Vec<Houtput> = marshall_from_haskell_var(out_list, out_list_len, RW);
-    println!(outputs);
+    println!("{:?}", outputs);
     for output in outputs {
         match output.kind {
             1 => {