1 files changed, 13 insertions, 0 deletions
diff --git a/src/script/sign.h b/src/script/sign.h
index d12d0b5874..96ef59fbe8 100644
--- a/src/script/sign.h
+++ b/src/script/sign.h
@@ -43,6 +43,19 @@ public:
     bool GetPubKey(const CKeyID &address, CPubKey& pubkey) const;
 };
 
+struct FlatSigningProvider final : public SigningProvider
+{
+    std::map<CScriptID, CScript> scripts;
+    std::map<CKeyID, CPubKey> pubkeys;
+    std::map<CKeyID, CKey> keys;
+
+    bool GetCScript(const CScriptID& scriptid, CScript& script) const override;
+    bool GetPubKey(const CKeyID& keyid, CPubKey& pubkey) const override;
+    bool GetKey(const CKeyID& keyid, CKey& key) const override;
+};
+
+FlatSigningProvider Merge(const FlatSigningProvider& a, const FlatSigningProvider& b);
+
 /** Interface for signature creators. */
 class BaseSignatureCreator {
 public: