diff --git a/src/main/kotlin/tech/relaycorp/veraid/SignatureBundle.kt b/src/main/kotlin/tech/relaycorp/veraid/SignatureBundle.kt
index 2449362..9cb70f5 100644
--- a/src/main/kotlin/tech/relaycorp/veraid/SignatureBundle.kt
+++ b/src/main/kotlin/tech/relaycorp/veraid/SignatureBundle.kt
@@ -91,7 +91,7 @@ public class SignatureBundle internal constructor(
         }
 
         return try {
-            memberIdBundle.verify(ASN1ObjectIdentifier(serviceOid), signaturePeriodIntersection)
+            memberIdBundle.verify(serviceOid, signaturePeriodIntersection)
         } catch (exc: PkiException) {
             throw SignatureException("Member id bundle is invalid", exc)
         }
diff --git a/src/main/kotlin/tech/relaycorp/veraid/pki/MemberIdBundle.kt b/src/main/kotlin/tech/relaycorp/veraid/pki/MemberIdBundle.kt
index a01bd8f..36163fb 100644
--- a/src/main/kotlin/tech/relaycorp/veraid/pki/MemberIdBundle.kt
+++ b/src/main/kotlin/tech/relaycorp/veraid/pki/MemberIdBundle.kt
@@ -37,7 +37,7 @@ public class MemberIdBundle(
     )
 
     @Throws(PkiException::class)
-    internal suspend fun verify(service: ASN1ObjectIdentifier, datePeriod: DatePeriod): Member {
+    public suspend fun verify(serviceOid: String, datePeriod: DatePeriod): Member {
         try {
             memberCertificate.getCertificationPath(emptyList(), listOf(orgCertificate))
         } catch (exc: CertificateException) {
@@ -63,7 +63,7 @@ public class MemberIdBundle(
         try {
             dnssecChain.verify(
                 orgCertificate.subjectPublicKey.orgKeySpec,
-                service,
+                ASN1ObjectIdentifier(serviceOid),
                 verificationPeriod,
             )
         } catch (exc: DnsException) {
diff --git a/src/test/kotlin/tech/relaycorp/veraid/SignatureBundleTest.kt b/src/test/kotlin/tech/relaycorp/veraid/SignatureBundleTest.kt
index 5768329..99dfe81 100644
--- a/src/test/kotlin/tech/relaycorp/veraid/SignatureBundleTest.kt
+++ b/src/test/kotlin/tech/relaycorp/veraid/SignatureBundleTest.kt
@@ -15,7 +15,6 @@ import io.kotest.matchers.types.beInstanceOf
 import io.kotest.matchers.types.instanceOf
 import kotlinx.coroutines.test.runTest
 import org.bouncycastle.asn1.ASN1Integer
-import org.bouncycastle.asn1.ASN1ObjectIdentifier
 import org.bouncycastle.asn1.ASN1Sequence
 import org.bouncycastle.asn1.ASN1TaggedObject
 import org.bouncycastle.asn1.DERNull
@@ -676,10 +675,10 @@ class SignatureBundleTest {
 
                 bundle.verify(plaintext, SERVICE_OID.id)
 
-                argumentCaptor<ASN1ObjectIdentifier>().apply {
+                argumentCaptor<String>().apply {
                     verify(mockMemberIdBundle).verify(capture(), any())
 
-                    firstValue shouldBe SERVICE_OID
+                    firstValue shouldBe SERVICE_OID.id
                 }
             }
         }
diff --git a/src/test/kotlin/tech/relaycorp/veraid/pki/MemberIdBundleTest.kt b/src/test/kotlin/tech/relaycorp/veraid/pki/MemberIdBundleTest.kt
index 71877c5..f859773 100644
--- a/src/test/kotlin/tech/relaycorp/veraid/pki/MemberIdBundleTest.kt
+++ b/src/test/kotlin/tech/relaycorp/veraid/pki/MemberIdBundleTest.kt
@@ -203,7 +203,7 @@ class MemberIdBundleTest {
                 val bundle = MemberIdBundle(dnssecChain, otherOrgCert, MEMBER_CERT)
 
                 val exception = shouldThrow<PkiException> {
-                    bundle.verify(SERVICE_OID, ORG_CERT.validityPeriod)
+                    bundle.verify(SERVICE_OID.id, ORG_CERT.validityPeriod)
                 }
 
                 exception.message shouldBe "Member certificate was not issued by organisation"
@@ -217,7 +217,7 @@ class MemberIdBundleTest {
                 val period = start..start.plusSeconds(1)
 
                 val exception = shouldThrow<PkiException> {
-                    bundle.verify(SERVICE_OID, period)
+                    bundle.verify(SERVICE_OID.id, period)
                 }
 
                 exception.message shouldBe
@@ -236,7 +236,7 @@ class MemberIdBundleTest {
                 val bundle = MemberIdBundle(dnssecChain, ORG_CERT, memberCert)
 
                 val exception = shouldThrow<PkiException> {
-                    bundle.verify(SERVICE_OID, ORG_CERT.validityPeriod)
+                    bundle.verify(SERVICE_OID.id, ORG_CERT.validityPeriod)
                 }
 
                 exception.message shouldBe errorMessage
@@ -248,7 +248,7 @@ class MemberIdBundleTest {
                 val bundle = MemberIdBundle(dnssecChain, ORG_CERT, memberCert)
 
                 val exception = shouldThrow<PkiException> {
-                    bundle.verify(SERVICE_OID, ORG_CERT.validityPeriod)
+                    bundle.verify(SERVICE_OID.id, ORG_CERT.validityPeriod)
                 }
 
                 exception.message shouldBe errorMessage
@@ -260,7 +260,7 @@ class MemberIdBundleTest {
                 val bundle = MemberIdBundle(dnssecChain, ORG_CERT, memberCert)
 
                 val exception = shouldThrow<PkiException> {
-                    bundle.verify(SERVICE_OID, ORG_CERT.validityPeriod)
+                    bundle.verify(SERVICE_OID.id, ORG_CERT.validityPeriod)
                 }
 
                 exception.message shouldBe errorMessage
@@ -272,7 +272,7 @@ class MemberIdBundleTest {
                 val bundle = MemberIdBundle(dnssecChain, ORG_CERT, memberCert)
 
                 val exception = shouldThrow<PkiException> {
-                    bundle.verify(SERVICE_OID, ORG_CERT.validityPeriod)
+                    bundle.verify(SERVICE_OID.id, ORG_CERT.validityPeriod)
                 }
 
                 exception.message shouldBe errorMessage
@@ -298,7 +298,7 @@ class MemberIdBundleTest {
                 val chainSpy = mockChain()
                 val bundle = MemberIdBundle(chainSpy, ORG_CERT, MEMBER_CERT)
 
-                bundle.verify(SERVICE_OID, ORG_CERT.validityPeriod)
+                bundle.verify(SERVICE_OID.id, ORG_CERT.validityPeriod)
 
                 verify(chainSpy).verify(any(), eq(SERVICE_OID), any())
             }
@@ -308,7 +308,7 @@ class MemberIdBundleTest {
                 val chainSpy = mockChain()
                 val bundle = MemberIdBundle(chainSpy, ORG_CERT, MEMBER_CERT)
 
-                bundle.verify(SERVICE_OID, ORG_CERT.validityPeriod)
+                bundle.verify(SERVICE_OID.id, ORG_CERT.validityPeriod)
 
                 verify(chainSpy).verify(eq(ORG_KEY_PAIR.public.orgKeySpec), any(), any())
             }
@@ -329,7 +329,7 @@ class MemberIdBundleTest {
                 val verificationStart = memberCert.validityPeriod.start.minusSeconds(1)
                 val verificationEnd = ORG_CERT.validityPeriod.endInclusive.minusSeconds(1)
 
-                bundle.verify(SERVICE_OID, verificationStart..verificationEnd)
+                bundle.verify(SERVICE_OID.id, verificationStart..verificationEnd)
 
                 verify(chainSpy).verify(any(), any(), eq(memberCertStart..verificationEnd))
             }
@@ -341,7 +341,7 @@ class MemberIdBundleTest {
 
                 val exception = shouldThrow<PkiException> {
                     bundle.verify(
-                        SERVICE_OID,
+                        SERVICE_OID.id,
                         ORG_CERT.validityPeriod,
                     )
                 }
@@ -356,7 +356,7 @@ class MemberIdBundleTest {
                 val bundle = MemberIdBundle(mockChain(originalException), ORG_CERT, MEMBER_CERT)
 
                 val exception = shouldThrow<PkiException> {
-                    bundle.verify(SERVICE_OID, ORG_CERT.validityPeriod)
+                    bundle.verify(SERVICE_OID.id, ORG_CERT.validityPeriod)
                 }
 
                 exception.message shouldBe "DNS/DNSSEC resolution failed"
@@ -369,7 +369,7 @@ class MemberIdBundleTest {
                 val bundle = MemberIdBundle(mockChain(originalException), ORG_CERT, MEMBER_CERT)
 
                 val exception = shouldThrow<PkiException> {
-                    bundle.verify(SERVICE_OID, ORG_CERT.validityPeriod)
+                    bundle.verify(SERVICE_OID.id, ORG_CERT.validityPeriod)
                 }
 
                 exception.message shouldBe "VeraId DNSSEC chain verification failed"
@@ -383,7 +383,7 @@ class MemberIdBundleTest {
             fun `Organisation name should be output`() = runTest {
                 val bundle = MemberIdBundle(mockChain(), ORG_CERT, MEMBER_CERT)
 
-                val member = bundle.verify(SERVICE_OID, ORG_CERT.validityPeriod)
+                val member = bundle.verify(SERVICE_OID.id, ORG_CERT.validityPeriod)
 
                 member.orgName shouldBe ORG_NAME
             }
@@ -392,7 +392,7 @@ class MemberIdBundleTest {
             fun `User name should be output if member is a user`() = runTest {
                 val bundle = MemberIdBundle(mockChain(), ORG_CERT, MEMBER_CERT)
 
-                val member = bundle.verify(SERVICE_OID, ORG_CERT.validityPeriod)
+                val member = bundle.verify(SERVICE_OID.id, ORG_CERT.validityPeriod)
 
                 member.userName shouldBe USER_NAME
             }
@@ -409,7 +409,7 @@ class MemberIdBundleTest {
                 )
                 val bundle = MemberIdBundle(mockChain(), ORG_CERT, botCert)
 
-                val member = bundle.verify(SERVICE_OID, ORG_CERT.validityPeriod)
+                val member = bundle.verify(SERVICE_OID.id, ORG_CERT.validityPeriod)
 
                 member.userName shouldBe null
             }