diff --git a/api/src/client.rs b/api/src/client.rs
index ab17e9a6a..0db78716a 100644
--- a/api/src/client.rs
+++ b/api/src/client.rs
@@ -28,7 +28,6 @@ use rest::Error;
 pub fn get<'a, T>(url: &'a str) -> Result<T, Error>
 	where for<'de> T: Deserialize<'de>
 {
-	println!("get {}", url);
 	let client = hyper::Client::new();
 	let res = check_error(client.get(url).send())?;
 	serde_json::from_reader(res)
diff --git a/api/src/endpoints.rs b/api/src/endpoints.rs
index 001f82490..7806242f4 100644
--- a/api/src/endpoints.rs
+++ b/api/src/endpoints.rs
@@ -74,9 +74,10 @@ impl ApiEndpoint for OutputApi {
 	fn get(&self, id: String) -> ApiResult<Output> {
 		debug!("GET output {}", id);
 		let c = util::from_hex(id.clone()).map_err(|e| Error::Argument(format!("Not a valid commitment: {}", id)))?;
-		self.chain_store
+		let out = self.chain_store
 			.get_output_by_commit(&Commitment::from_vec(c))
-			.map_err(|e| Error::Internal(e.to_string()))
+			.map_err(|e| Error::Internal(e.to_string()));
+		out
 	}
 }
 
diff --git a/chain/src/store.rs b/chain/src/store.rs
index 0b1f92c72..20af053cd 100644
--- a/chain/src/store.rs
+++ b/chain/src/store.rs
@@ -96,9 +96,7 @@ impl ChainStore for ChainKVStore {
 		// saving the full output under its hash, as well as a commitment to hash index
 		for out in &b.outputs {
 			let mut out_bytes = out.commit.as_ref().to_vec();
-			println!("OUTSAVE: {:?}", out_bytes);
-			batch = batch.put_ser(&to_key(OUTPUT_COMMIT_PREFIX, &mut out_bytes)[..],
-				         &out.hash())?;
+			batch = batch.put_ser(&to_key(OUTPUT_COMMIT_PREFIX, &mut out_bytes)[..], out)?;
 		}
 		batch.write()
 	}
@@ -113,8 +111,8 @@ impl ChainStore for ChainKVStore {
 	}
 
 	fn get_output_by_commit(&self, commit: &Commitment) -> Result<Output, Error> {
-		option_to_not_found(self.db.get_ser(&to_key(OUTPUT_COMMIT_PREFIX,
-		                                            &mut commit.as_ref().to_vec())))
+		option_to_not_found(self.db
+			.get_ser(&to_key(OUTPUT_COMMIT_PREFIX, &mut commit.as_ref().to_vec())))
 	}
 
 	fn has_output_commit(&self, commit: &Commitment) -> Result<Hash, Error> {
diff --git a/wallet/src/checker.rs b/wallet/src/checker.rs
index 24e6e998e..1154d3c3f 100644
--- a/wallet/src/checker.rs
+++ b/wallet/src/checker.rs
@@ -24,14 +24,14 @@ use util;
 use extkey::ExtendedKey;
 use types::{WalletConfig, OutputStatus, WalletData};
 
+/// Goes through the list of outputs that haven't been spent yet and check
+/// with a node whether their status has changed.
 pub fn refresh_outputs(config: &WalletConfig, ext_key: &ExtendedKey) {
-	println!("REFRESH");
 	let secp = secp::Secp256k1::with_caps(secp::ContextFlag::Commit);
 	let mut wallet_data = WalletData::read_or_create().expect("Could not open wallet data.");
 
 	let mut changed = 0;
 	for out in &mut wallet_data.outputs {
-		println!("check out {}", out.n_child);
 		if out.status != OutputStatus::Spent {
 			let key = ext_key.derive(&secp, out.n_child).unwrap();
 			let commitment = secp.commit(out.value, key.key).unwrap();
@@ -39,7 +39,6 @@ pub fn refresh_outputs(config: &WalletConfig, ext_key: &ExtendedKey) {
 			// TODO check the pool for unconfirmed
 			let out_res = get_output_by_commitment(config, commitment);
 			if out_res.is_ok() {
-				println!("ok");
 				out.status = OutputStatus::Unspent;
 				changed += 1;
 			}
@@ -50,6 +49,8 @@ pub fn refresh_outputs(config: &WalletConfig, ext_key: &ExtendedKey) {
 	}
 }
 
+// queries a reachable node for a given output, checking whether it's been
+// confirmed
 fn get_output_by_commitment(config: &WalletConfig,
                             commit: pedersen::Commitment)
                             -> Result<Output, api::Error> {
diff --git a/wallet/src/receiver.rs b/wallet/src/receiver.rs
index f0991aa1d..0b3a3cea5 100644
--- a/wallet/src/receiver.rs
+++ b/wallet/src/receiver.rs
@@ -140,5 +140,5 @@ fn receive_coinbase(ext_key: &ExtendedKey, amount: u64) -> Result<(Output, TxKer
 	info!("Using child {} for a new coinbase output.",
 	      coinbase_key.n_child);
 
-	Block::reward_output(ext_key.key, &secp).map_err(&From::from)
+	Block::reward_output(coinbase_key.key, &secp).map_err(&From::from);
 }
diff --git a/wallet/src/sender.rs b/wallet/src/sender.rs
index fec1fd27a..e5e1b3843 100644
--- a/wallet/src/sender.rs
+++ b/wallet/src/sender.rs
@@ -27,7 +27,7 @@ pub fn issue_send_tx(ext_key: &ExtendedKey, amount: u64, dest: String) -> Result
 	let (tx, blind_sum) = build_send_tx(ext_key, amount)?;
 	let json_tx = partial_tx_to_json(amount, blind_sum, tx);
 	if dest == "stdout" {
-		println!("{}", dest);
+		println!("{}", json_tx);
 	} else if &dest[..4] == "http" {
 		// TODO
 		unimplemented!();