diff --git a/ethereal/src/main/java/com/salesforce/apollo/ethereal/Checks.java b/ethereal/src/main/java/com/salesforce/apollo/ethereal/Checks.java
deleted file mode 100644
index 105ec5a19..000000000
--- a/ethereal/src/main/java/com/salesforce/apollo/ethereal/Checks.java
+++ /dev/null
@@ -1,80 +0,0 @@
-/*
- * Copyright (c) 2021, salesforce.com, inc.
- * All rights reserved.
- * SPDX-License-Identifier: BSD-3-Clause
- * For full license text, see the LICENSE file in the repo root or https://opensource.org/licenses/BSD-3-Clause
- */
-package com.salesforce.apollo.ethereal;
-
-import java.util.Arrays;
-import java.util.List;
-import java.util.function.BiFunction;
-
-/**
- * @author hal.hildebrand
- *
- */
-public interface Checks {
-
-    static BiFunction<Unit, Dag, Correctness> basicCorrectness() {
-        return (u, dag) -> {
-            var parents = u.parents();
-            var nproc = dag.nProc();
-            if (parents.length != nproc) {
-                return Correctness.COMPLIANCE_ERROR;
-            }
-            short nonNillParents = 0;
-            for (short i = 0; i < nproc; i++) {
-                if (parents[i] == null) {
-                    continue;
-                }
-                nonNillParents++;
-                if (parents[i].creator() != i) {
-                    return Correctness.COMPLIANCE_ERROR;
-                }
-            }
-            if (u.predecessor() == null && nonNillParents > 0) {
-                return Correctness.COMPLIANCE_ERROR;
-            }
-            if (u.predecessor() != null && u.predecessor().level() >= u.level()) {
-                return Correctness.COMPLIANCE_ERROR;
-            }
-            return null;
-        };
-    }
-
-    static BiFunction<Unit, Dag, Correctness> forkerMuting() {
-        return (u, dag) -> null;
-    }
-
-    static BiFunction<Unit, Dag, Correctness> noForks() {
-        return (u, dag) -> null;
-    }
-
-    static BiFunction<Unit, Dag, Correctness> noLevelSkipping() {
-        return (u, dag) -> null;
-    }
-
-    static BiFunction<Unit, Dag, Correctness> noSelfForkingEvidence() {
-        return (u, dag) -> null;
-    }
-
-    static BiFunction<Unit, Dag, Correctness> parentConsistency() {
-        return (unit, dag) -> {
-            var parents = unit.parents();
-            var nproc = dag.nProc();
-            for (short i = 0; i < nproc; i++) {
-                for (short j = 0; j < nproc; j++) {
-                    if (parents[j] == null) {
-                        continue;
-                    }
-                    var u = parents[j].parents()[i];
-                    if (u != null && (parents[i] == null || parents[i].level() < u.level())) {
-                        return Correctness.COMPLIANCE_ERROR;
-                    }
-                }
-            }
-            return null;
-        };
-    }
-}
diff --git a/ethereal/src/test/java/com/salesforce/apollo/ethereal/DagFactory.java b/ethereal/src/test/java/com/salesforce/apollo/ethereal/DagFactory.java
index 5e2d7e543..da5e2ff6b 100644
--- a/ethereal/src/test/java/com/salesforce/apollo/ethereal/DagFactory.java
+++ b/ethereal/src/test/java/com/salesforce/apollo/ethereal/DagFactory.java
@@ -8,27 +8,73 @@
 
 import com.salesforce.apollo.ethereal.Dag.DagImpl;
 
+import java.util.function.BiFunction;
+
 /**
  * @author hal.hildebrand
- *
  */
 public interface DagFactory {
-    public class DefaultChecksFactory implements DagFactory {
+    static BiFunction<Unit, Dag, Correctness> parentConsistency() {
+        return (unit, dag) -> {
+            var parents = unit.parents();
+            var nproc = dag.nProc();
+            for (short i = 0; i < nproc; i++) {
+                for (short j = 0; j < nproc; j++) {
+                    if (parents[j] == null) {
+                        continue;
+                    }
+                    var u = parents[j].parents()[i];
+                    if (u != null && (parents[i] == null || parents[i].level() < u.level())) {
+                        return Correctness.COMPLIANCE_ERROR;
+                    }
+                }
+            }
+            return null;
+        };
+    }
+
+    static BiFunction<Unit, Dag, Correctness> basicCorrectness() {
+        return (u, dag) -> {
+            var parents = u.parents();
+            var nproc = dag.nProc();
+            if (parents.length != nproc) {
+                return Correctness.COMPLIANCE_ERROR;
+            }
+            short nonNillParents = 0;
+            for (short i = 0; i < nproc; i++) {
+                if (parents[i] == null) {
+                    continue;
+                }
+                nonNillParents++;
+                if (parents[i].creator() != i) {
+                    return Correctness.COMPLIANCE_ERROR;
+                }
+            }
+            if (u.predecessor() == null && nonNillParents > 0) {
+                return Correctness.COMPLIANCE_ERROR;
+            }
+            if (u.predecessor() != null && u.predecessor().level() >= u.level()) {
+                return Correctness.COMPLIANCE_ERROR;
+            }
+            return null;
+        };
+    }
+
+    Dag createDag(short nProc);
+
+    class DefaultChecksFactory implements DagFactory {
 
         @Override
         public Dag createDag(short nProc) {
             var cnf = Config.newBuilder().setnProc(nProc).build();
             var dag = new DagImpl(cnf, 0);
-            dag.addCheck(Checks.basicCorrectness());
-            dag.addCheck(Checks.parentConsistency());
-            dag.addCheck(Checks.noSelfForkingEvidence());
-            dag.addCheck(Checks.forkerMuting());
-
+            dag.addCheck(basicCorrectness());
+            dag.addCheck(parentConsistency());
             return dag;
         }
     }
 
-    public class TestDagFactory implements DagFactory {
+    class TestDagFactory implements DagFactory {
 
         private final int initialEpoch;
 
@@ -46,6 +92,4 @@ public Dag createDag(short nProc) {
             return new DagImpl(cnf, initialEpoch);
         }
     }
-
-    Dag createDag(short nProc);
 }