diff --git a/model/src/main/java/de/cotto/lndmanagej/model/ChannelId.java b/model/src/main/java/de/cotto/lndmanagej/model/ChannelId.java
index 459f93f3..d8771f95 100644
--- a/model/src/main/java/de/cotto/lndmanagej/model/ChannelId.java
+++ b/model/src/main/java/de/cotto/lndmanagej/model/ChannelId.java
@@ -5,7 +5,6 @@ import java.util.Objects;
 
 public final class ChannelId implements Comparable<ChannelId> {
     private static final int EXPECTED_NUMBER_OF_SEGMENTS = 3;
-    private static final long NOT_BEFORE = 430_103_660_018_532_352L; // January 1st 2016
 
     private final long shortChannelId;
 
@@ -14,7 +13,7 @@ public final class ChannelId implements Comparable<ChannelId> {
     }
 
     public static ChannelId fromShortChannelId(long shortChannelId) {
-        if (shortChannelId < NOT_BEFORE) {
+        if (shortChannelId <= 0) {
             throw new IllegalArgumentException("Illegal channel ID " + shortChannelId);
         }
         return new ChannelId(shortChannelId);
diff --git a/model/src/test/java/de/cotto/lndmanagej/model/ChannelIdTest.java b/model/src/test/java/de/cotto/lndmanagej/model/ChannelIdTest.java
index abd6abea..512889bb 100644
--- a/model/src/test/java/de/cotto/lndmanagej/model/ChannelIdTest.java
+++ b/model/src/test/java/de/cotto/lndmanagej/model/ChannelIdTest.java
@@ -25,9 +25,9 @@ class ChannelIdTest {
         }
 
         @Test
-        void before_2016() {
+        void zero_id() {
             assertThatIllegalArgumentException().isThrownBy(
-                    () -> ChannelId.fromCompactForm("391176:999:999")
+                    () -> ChannelId.fromCompactForm("0:0:0")
             ).withMessageStartingWith(ILLEGAL_CHANNEL_ID);
         }
 
@@ -81,9 +81,9 @@ class ChannelIdTest {
         }
 
         @Test
-        void before_2016() {
+        void zero_id() {
             assertThatIllegalArgumentException().isThrownBy(
-                    () -> ChannelId.fromShortChannelId(430_103_660_018_532_351L)
+                    () -> ChannelId.fromShortChannelId(0)
             ).withMessageStartingWith(ILLEGAL_CHANNEL_ID);
         }
 
@@ -151,4 +151,4 @@ class ChannelIdTest {
     void testToString() {
         assertThat(CHANNEL_ID).hasToString(CHANNEL_ID.getCompactForm());
     }
-}
\ No newline at end of file
+}
diff --git a/web/src/test/java/de/cotto/lndmanagej/controller/ChannelIdConverterTest.java b/web/src/test/java/de/cotto/lndmanagej/controller/ChannelIdConverterTest.java
index 9add36ed..387a2068 100644
--- a/web/src/test/java/de/cotto/lndmanagej/controller/ChannelIdConverterTest.java
+++ b/web/src/test/java/de/cotto/lndmanagej/controller/ChannelIdConverterTest.java
@@ -63,13 +63,8 @@ class ChannelIdConverterTest {
         }
 
         @Test
-        void just_numbers_small_number() {
-            assertThat(channelIdConverter.tryToConvert("123")).isEmpty();
-        }
-
-        @Test
-        void just_numbers_too_early() {
-            assertThat(channelIdConverter.tryToConvert("430103660018532351")).isEmpty();
+        void just_numbers_zero() {
+            assertThat(channelIdConverter.tryToConvert("0")).isEmpty();
         }
 
         @Test
@@ -78,8 +73,8 @@ class ChannelIdConverterTest {
         }
 
         @Test
-        void compact_form_too_early() {
-            assertThat(channelIdConverter.tryToConvert("300000x123x1")).isEmpty();
+        void compact_form_zero() {
+            assertThat(channelIdConverter.tryToConvert("0x0x0")).isEmpty();
         }
 
         @Test
@@ -88,8 +83,8 @@ class ChannelIdConverterTest {
         }
 
         @Test
-        void compact_lnd_form_too_early() {
-            assertThat(channelIdConverter.tryToConvert("300000:123:1")).isEmpty();
+        void compact_lnd_form_zero() {
+            assertThat(channelIdConverter.tryToConvert("0:0:0")).isEmpty();
         }
 
         @Test