diff --git a/sdk-lib/src/main/java/cash/z/ecc/android/sdk/model/Zatoshi.kt b/sdk-lib/src/main/java/cash/z/ecc/android/sdk/model/Zatoshi.kt
index ce98162..a03264f 100644
--- a/sdk-lib/src/main/java/cash/z/ecc/android/sdk/model/Zatoshi.kt
+++ b/sdk-lib/src/main/java/cash/z/ecc/android/sdk/model/Zatoshi.kt
@@ -8,10 +8,6 @@ package cash.z.ecc.android.sdk.model
  * to avoid floating point imprecision.
  */
 data class Zatoshi(val value: Long) : Comparable<Zatoshi> {
-    init {
-        require(value >= MIN_INCLUSIVE) { "Zatoshi must be in the range [$MIN_INCLUSIVE, $MAX_INCLUSIVE]" }
-    }
-
     operator fun plus(other: Zatoshi) = Zatoshi(value + other.value)
     operator fun minus(other: Zatoshi) = Zatoshi(value - other.value)
 
@@ -22,11 +18,5 @@ data class Zatoshi(val value: Long) : Comparable<Zatoshi> {
          * The number of Zatoshi that equal 1 ZEC.
          */
         const val ZATOSHI_PER_ZEC = 100_000_000L
-
-        private const val MAX_ZEC_SUPPLY = 21_000_000
-
-        const val MIN_INCLUSIVE = 0
-
-        const val MAX_INCLUSIVE = ZATOSHI_PER_ZEC * MAX_ZEC_SUPPLY
     }
 }
diff --git a/sdk-lib/src/test/java/cash/z/ecc/android/sdk/model/ZatoshiTest.kt b/sdk-lib/src/test/java/cash/z/ecc/android/sdk/model/ZatoshiTest.kt
deleted file mode 100644
index 80a4233..0000000
--- a/sdk-lib/src/test/java/cash/z/ecc/android/sdk/model/ZatoshiTest.kt
+++ /dev/null
@@ -1,47 +0,0 @@
-package cash.z.ecc.android.sdk.model
-
-import org.junit.Test
-import kotlin.test.assertEquals
-import kotlin.test.assertFailsWith
-import kotlin.test.assertTrue
-
-class ZatoshiTest {
-    @Test
-    fun minValue() {
-        assertFailsWith<IllegalArgumentException> {
-            Zatoshi(Zatoshi.MIN_INCLUSIVE - 1L)
-        }
-    }
-
-    @Test
-    fun plus() {
-        assertEquals(Zatoshi(4), Zatoshi(1) + Zatoshi(3))
-    }
-
-    @Test
-    fun minus() {
-        assertEquals(Zatoshi(3), Zatoshi(4) - Zatoshi(1))
-    }
-
-    @Test
-    fun compare_equal() {
-        assertEquals(0, Zatoshi(1).compareTo(Zatoshi(1)))
-    }
-
-    @Test
-    fun compare_greater() {
-        assertTrue(Zatoshi(2) > Zatoshi(1))
-    }
-
-    @Test
-    fun compare_less() {
-        assertTrue(Zatoshi(1) < Zatoshi(2))
-    }
-
-    @Test
-    fun minus_fail() {
-        assertFailsWith<IllegalArgumentException> {
-            Zatoshi(5) - Zatoshi(6)
-        }
-    }
-}