diff --git a/zcash_client_sqlite/src/chain.rs b/zcash_client_sqlite/src/chain.rs
index 9dc3d585d..c74a975c0 100644
--- a/zcash_client_sqlite/src/chain.rs
+++ b/zcash_client_sqlite/src/chain.rs
@@ -163,7 +163,7 @@ mod tests {
             init::{init_accounts_table, init_data_database},
             rewind_to_height,
         },
-        AccountId, BlockDB, WalletDB, NoteId,
+        AccountId, BlockDB, NoteId, WalletDB,
     };
 
     #[test]
diff --git a/zcash_client_sqlite/src/wallet.rs b/zcash_client_sqlite/src/wallet.rs
index b221e0728..2878e54e3 100644
--- a/zcash_client_sqlite/src/wallet.rs
+++ b/zcash_client_sqlite/src/wallet.rs
@@ -20,7 +20,7 @@ use zcash_client_backend::{
     },
 };
 
-use crate::{error::SqliteClientError, AccountId, WalletDB, NoteId};
+use crate::{error::SqliteClientError, AccountId, NoteId, WalletDB};
 
 pub mod init;
 pub mod transact;
@@ -284,10 +284,7 @@ pub fn block_height_extrema(
         .or(Ok(None))
 }
 
-pub fn get_tx_height(
-    conn: &WalletDB,
-    txid: TxId,
-) -> Result<Option<BlockHeight>, rusqlite::Error> {
+pub fn get_tx_height(conn: &WalletDB, txid: TxId) -> Result<Option<BlockHeight>, rusqlite::Error> {
     conn.0
         .query_row(
             "SELECT block FROM transactions WHERE txid = ?",
@@ -415,9 +412,7 @@ pub fn get_witnesses(
     Ok(res)
 }
 
-pub fn get_nullifiers(
-    data: &WalletDB,
-) -> Result<Vec<(Vec<u8>, AccountId)>, SqliteClientError> {
+pub fn get_nullifiers(data: &WalletDB) -> Result<Vec<(Vec<u8>, AccountId)>, SqliteClientError> {
     // Get the nullifiers for the notes we are tracking
     let mut stmt_fetch_nullifiers = data
         .0
diff --git a/zcash_primitives/src/consensus.rs b/zcash_primitives/src/consensus.rs
index f939ea4d8..09a3ea426 100644
--- a/zcash_primitives/src/consensus.rs
+++ b/zcash_primitives/src/consensus.rs
@@ -129,32 +129,56 @@ pub trait Parameters: Clone {
     /// if an activation height has been set.
     fn activation_height(&self, nu: NetworkUpgrade) -> Option<BlockHeight>;
 
-    /// The coin type for ZEC, as defined by [SLIP 44].
-    ///
-    /// [SLIP 44]: https://github.com/satoshilabs/slips/blob/master/slip-0044.md
-    fn coin_type(&self) -> u32;
-
-    /// Returns the human-readable prefix for Sapling extended full
-    /// viewing keys for the network to which this Parameters value applies.
-    fn hrp_sapling_extended_full_viewing_key(&self) -> &str;
-
-    /// Returns the human-readable prefix for Sapling payment addresses
-    /// viewing keys for the network to which this Parameters value applies.
-    fn hrp_sapling_payment_address(&self) -> &str;
-
-    /// Returns the human-readable prefix for transparent pay-to-public-key-hash
-    /// payment addresses for the network to which this Parameters value applies.
-    fn b58_pubkey_address_prefix(&self) -> [u8; 2];
-
-    /// Returns the human-readable prefix for transparent pay-to-script-hash
-    /// payment addresses for the network to which this Parameters value applies.
-    fn b58_script_address_prefix(&self) -> [u8; 2];
-
     /// Determines whether the specified network upgrade is active as of the
     /// provided block height on the network to which this Parameters value applies.
     fn is_nu_active(&self, nu: NetworkUpgrade, height: BlockHeight) -> bool {
         self.activation_height(nu).map_or(false, |h| h <= height)
     }
+
+    /// The coin type for ZEC, as defined by [SLIP 44].
+    ///
+    /// [SLIP 44]: https://github.com/satoshilabs/slips/blob/master/slip-0044.md
+    fn coin_type(&self) -> u32;
+
+    /// Returns the Bech32-encoded human-readable prefix for Sapling extended spending keys
+    /// the network to which this Parameters value applies.
+    ///
+    /// Defined in [ZIP 32].
+    ///
+    /// [`ExtendedSpendingKey`]: zcash_primitives::zip32::ExtendedSpendingKey
+    /// [ZIP 32]: https://github.com/zcash/zips/blob/master/zip-0032.rst
+    fn hrp_sapling_extended_spending_key(&self) -> &str;
+
+    /// Returns the Bech32-encoded human-readable prefix for Sapling extended full
+    /// viewing keys for the network to which this Parameters value applies.
+    ///
+    /// Defined in [ZIP 32].
+    ///
+    /// [`ExtendedFullViewingKey`]: zcash_primitives::zip32::ExtendedFullViewingKey
+    /// [ZIP 32]: https://github.com/zcash/zips/blob/master/zip-0032.rst
+    fn hrp_sapling_extended_full_viewing_key(&self) -> &str;
+
+    /// Returns the Bech32-encoded human-readable prefix for Sapling payment addresses
+    /// viewing keys for the network to which this Parameters value applies.
+    ///
+    /// Defined in section 5.6.4 of the [Zcash Protocol Specification].
+    ///
+    /// [`PaymentAddress`]: zcash_primitives::primitives::PaymentAddress
+    /// [Zcash Protocol Specification]: https://github.com/zcash/zips/blob/master/protocol/protocol.pdf
+    fn hrp_sapling_payment_address(&self) -> &str;
+
+    /// Returns the Base58Check-encoded human-readable prefix for transparent
+    /// pay-to-public-key-hash payment addresses for the network to which this Parameters value
+    /// applies.
+    ///
+    /// [`TransparentAddress::PublicKey`]: zcash_primitives::legacy::TransparentAddress::PublicKey
+    fn b58_pubkey_address_prefix(&self) -> [u8; 2];
+
+    /// Returns the Base58Check-encoded human-readable prefix for transparent pay-to-script-hash
+    /// payment addresses for the network to which this Parameters value applies.
+    ///
+    /// [`TransparentAddress::Script`]: zcash_primitives::legacy::TransparentAddress::Script
+    fn b58_script_address_prefix(&self) -> [u8; 2];
 }
 
 /// Marker struct for the production network.
@@ -179,6 +203,10 @@ impl Parameters for MainNetwork {
         constants::mainnet::COIN_TYPE
     }
 
+    fn hrp_sapling_extended_spending_key(&self) -> &str {
+        constants::mainnet::HRP_SAPLING_EXTENDED_SPENDING_KEY
+    }
+
     fn hrp_sapling_extended_full_viewing_key(&self) -> &str {
         constants::mainnet::HRP_SAPLING_EXTENDED_FULL_VIEWING_KEY
     }
@@ -218,6 +246,10 @@ impl Parameters for TestNetwork {
         constants::testnet::COIN_TYPE
     }
 
+    fn hrp_sapling_extended_spending_key(&self) -> &str {
+        constants::testnet::HRP_SAPLING_EXTENDED_SPENDING_KEY
+    }
+
     fn hrp_sapling_extended_full_viewing_key(&self) -> &str {
         constants::testnet::HRP_SAPLING_EXTENDED_FULL_VIEWING_KEY
     }
@@ -256,6 +288,13 @@ impl Parameters for Network {
         }
     }
 
+    fn hrp_sapling_extended_spending_key(&self) -> &str {
+        match self {
+            Network::MainNetwork => MAIN_NETWORK.hrp_sapling_extended_spending_key(),
+            Network::TestNetwork => TEST_NETWORK.hrp_sapling_extended_spending_key(),
+        }
+    }
+
     fn hrp_sapling_extended_full_viewing_key(&self) -> &str {
         match self {
             Network::MainNetwork => MAIN_NETWORK.hrp_sapling_extended_full_viewing_key(),