diff --git a/src/avalanche/proof.h b/src/avalanche/proof.h
--- a/src/avalanche/proof.h
+++ b/src/avalanche/proof.h
@@ -118,9 +118,7 @@
     IMPLEMENT_RCU_REFCOUNT(uint64_t);
 
 public:
-    Proof()
-        : sequence(0), expirationTime(0), master(), stakes(),
-          payoutScriptPubKey(CScript()), limitedProofId(), proofid() {}
+    Proof() : Proof(0, 0, CPubKey(), {}, CScript(), SchnorrSig()) {}
 
     Proof(uint64_t sequence_, int64_t expirationTime_, CPubKey master_,
           std::vector<SignedStake> stakes_, const CScript &payoutScriptPubKey_,
diff --git a/src/avalanche/test/proof_tests.cpp b/src/avalanche/test/proof_tests.cpp
--- a/src/avalanche/test/proof_tests.cpp
+++ b/src/avalanche/test/proof_tests.cpp
@@ -886,6 +886,30 @@
     gArgs.ClearForcedArg("-legacyavaproof");
 }
 
+BOOST_AUTO_TEST_CASE(serialization_roundtrip) {
+    auto checkSerializationRoundTrip = [&](const ProofRef &proof) {
+        Proof unserProof;
+        bilingual_str error;
+        BOOST_CHECK(Proof::FromHex(unserProof, proof->ToHex(), error));
+        BOOST_CHECK(error.empty());
+        BOOST_CHECK_EQUAL(proof->getId(), unserProof.getId());
+        BOOST_CHECK(proof->getSignature() == unserProof.getSignature());
+    };
+
+    for (const std::string &legacy : {"0", "1"}) {
+        gArgs.ForceSetArg("-legacyavaproof", legacy);
+
+        checkSerializationRoundTrip(ProofRef::make());
+
+        for (size_t i = 0; i < 100; i++) {
+            checkSerializationRoundTrip(buildRandomProof(
+                GetRand(std::numeric_limits<uint32_t>::max())));
+        }
+    }
+
+    gArgs.ClearForcedArg("-legacyavaproof");
+}
+
 BOOST_AUTO_TEST_CASE(verify) {
     CCoinsView coinsDummy;
     CCoinsViewCache coins(&coinsDummy);