diff --git a/src/wallet/wallet.cpp b/src/wallet/wallet.cpp
index 558f2020a..a455cc2fe 100644
--- a/src/wallet/wallet.cpp
+++ b/src/wallet/wallet.cpp
@@ -117,22 +117,7 @@ const CWalletTx* CWallet::GetWalletTx(const uint256& hash) const
 // Generate a new spending key and return its public payment address
 libzcash::SproutPaymentAddress CWallet::GenerateNewSproutZKey()
 {
-    AssertLockHeld(cs_wallet); // mapSproutZKeyMetadata
-
-    auto k = SproutSpendingKey::random();
-    auto addr = k.address();
-
-    // Check for collision, even though it is unlikely to ever occur
-    if (CCryptoKeyStore::HaveSproutSpendingKey(addr))
-        throw std::runtime_error("CWallet::GenerateNewSproutZKey(): Collision detected");
-
-    // Create new metadata
-    int64_t nCreationTime = GetTime();
-    mapSproutZKeyMetadata[addr] = CKeyMetadata(nCreationTime);
-
-    if (!AddSproutZKey(k))
-        throw std::runtime_error("CWallet::GenerateNewSproutZKey(): AddSproutZKey failed");
-    return addr;
+    throw std::runtime_error("unsupported");
 }
 
 // Generate a new Sapling spending key and return its public payment address
@@ -313,24 +298,6 @@ bool CWallet::AddCryptedSproutSpendingKey(
     const libzcash::ReceivingKey &rk,
     const std::vector<unsigned char> &vchCryptedSecret)
 {
-    if (!CCryptoKeyStore::AddCryptedSproutSpendingKey(address, rk, vchCryptedSecret))
-        return false;
-    if (!fFileBacked)
-        return true;
-    {
-        LOCK(cs_wallet);
-        if (pwalletdbEncryption) {
-            return pwalletdbEncryption->WriteCryptedZKey(address,
-                                                         rk,
-                                                         vchCryptedSecret,
-                                                         mapSproutZKeyMetadata[address]);
-        } else {
-            return CWalletDB(strWalletFile).WriteCryptedZKey(address,
-                                                             rk,
-                                                             vchCryptedSecret,
-                                                             mapSproutZKeyMetadata[address]);
-        }
-    }
     return false;
 }
 
@@ -415,47 +382,6 @@ bool CWallet::LoadZKey(const libzcash::SproutSpendingKey &key)
     return CCryptoKeyStore::AddSproutSpendingKey(key);
 }
 
-bool CWallet::AddSproutViewingKey(const libzcash::SproutViewingKey &vk)
-{
-    if (!CCryptoKeyStore::AddSproutViewingKey(vk)) {
-        return false;
-    }
-    nTimeFirstKey = 1; // No birthday information for viewing keys.
-    if (!fFileBacked) {
-        return true;
-    }
-    return CWalletDB(strWalletFile).WriteSproutViewingKey(vk);
-}
-
-bool CWallet::RemoveSproutViewingKey(const libzcash::SproutViewingKey &vk)
-{
-    AssertLockHeld(cs_wallet);
-    if (!CCryptoKeyStore::RemoveSproutViewingKey(vk)) {
-        return false;
-    }
-    if (fFileBacked) {
-        if (!CWalletDB(strWalletFile).EraseSproutViewingKey(vk)) {
-            return false;
-        }
-    }
-
-    return true;
-}
-
-bool CWallet::LoadSproutViewingKey(const libzcash::SproutViewingKey &vk)
-{
-    return CCryptoKeyStore::AddSproutViewingKey(vk);
-}
-
-bool CWallet::AddCScript(const CScript& redeemScript)
-{
-    if (!CCryptoKeyStore::AddCScript(redeemScript))
-        return false;
-    if (!fFileBacked)
-        return true;
-    return CWalletDB(strWalletFile).WriteCScript(Hash160(redeemScript), redeemScript);
-}
-
 bool CWallet::LoadCScript(const CScript& redeemScript)
 {
     /* A sanity check was added in pull #3843 to avoid adding redeemScripts
diff --git a/src/wallet/wallet.h b/src/wallet/wallet.h
index 205a49008..1c46f3f98 100644
--- a/src/wallet/wallet.h
+++ b/src/wallet/wallet.h
@@ -1111,17 +1111,6 @@ public:
     bool LoadZKeyMetadata(const libzcash::SproutPaymentAddress &addr, const CKeyMetadata &meta);
     //! Adds an encrypted spending key to the store, without saving it to disk (used by LoadWallet)
     bool LoadCryptedZKey(const libzcash::SproutPaymentAddress &addr, const libzcash::ReceivingKey &rk, const std::vector<unsigned char> &vchCryptedSecret);
-    //! Adds an encrypted spending key to the store, and saves it to disk (virtual method, declared in crypter.h)
-    bool AddCryptedSproutSpendingKey(
-        const libzcash::SproutPaymentAddress &address,
-        const libzcash::ReceivingKey &rk,
-        const std::vector<unsigned char> &vchCryptedSecret);
-
-    //! Adds a Sprout viewing key to the store, and saves it to disk.
-    bool AddSproutViewingKey(const libzcash::SproutViewingKey &vk);
-    bool RemoveSproutViewingKey(const libzcash::SproutViewingKey &vk);
-    //! Adds a Sprout viewing key to the store, without saving it to disk (used by LoadWallet)
-    bool LoadSproutViewingKey(const libzcash::SproutViewingKey &dest);
 
     /**
       * Sapling ZKeys