diff --git a/src/Authress.SDK/Client/TokenVerifier.cs b/src/Authress.SDK/Client/TokenVerifier.cs
index a5ca7e6..f2445af 100644
--- a/src/Authress.SDK/Client/TokenVerifier.cs
+++ b/src/Authress.SDK/Client/TokenVerifier.cs
@@ -96,9 +96,10 @@ internal TokenVerifier(string authressCustomDomain, HttpClientProvider authressH
             this.authressHttpClientProvider = authressHttpClientProvider;
         }
 
-        private async Task<Jwk> getPublicKey(string issuer, string kid) {
+        private async Task<Jwk> getPublicKey(string issuer, string keyId) {
+            var cacheKey = $"{issuer}|{keyId}";
 
-            if (jwkCache.TryGetValue(kid, out Jwk cachedJwk))
+            if (jwkCache.TryGetValue(cacheKey, out Jwk cachedJwk))
             {
                 if (cachedJwk != null)
                 {
@@ -116,12 +117,12 @@ private async Task<Jwk> getPublicKey(string issuer, string kid) {
                 jwkResponse = await response.Content.ReadAsAsync<JwkResponse>();
             }
 
-            var foundKey = jwkResponse.Keys.FirstOrDefault(k => k.kid == kid);
+            var foundKey = jwkResponse.Keys.FirstOrDefault(k => k.kid == keyId);
             if (foundKey == null) {
                 throw new TokenVerificationException("No matching public key found for token");
             }
 
-            jwkCache.Set(kid, foundKey, new MemoryCacheEntryOptions {
+            jwkCache.Set(cacheKey, foundKey, new MemoryCacheEntryOptions {
                 SlidingExpiration = TimeSpan.FromDays(30),
                 Size = 1
             });
@@ -129,12 +130,13 @@ private async Task<Jwk> getPublicKey(string issuer, string kid) {
             return foundKey;
         }
 
-        public async Task<VerifiedUserIdentity> VerifyToken(string jwtToken) {
-
-            if (string.IsNullOrEmpty(jwtToken)) {
+        public async Task<VerifiedUserIdentity> VerifyToken(string authorizationHeaderValue) {
+            if (string.IsNullOrEmpty(authorizationHeaderValue)) {
                 throw new ArgumentNullException("Unauthorized: Token not specified");
             }
 
+            var jwtToken = authorizationHeaderValue.Trim().Replace("Bearer ", string.Empty, StringComparison.InvariantCultureIgnoreCase);
+
             var jwtHeader = JsonConvert.DeserializeObject<Client.JWT.JwtHeader>(Base64UrlEncoder.Decode(jwtToken.Split('.')[0]));
             var unverifiedJwtPayload = JsonConvert.DeserializeObject<Client.JWT.JwtPayload>(Base64UrlEncoder.Decode(jwtToken.Split('.')[1]));
 
diff --git a/tests/Authress.SDK/Client/Tokenverifier/VerifyTokenTests.cs b/tests/Authress.SDK/Client/Tokenverifier/VerifyTokenTests.cs
index 8c05105..a4d7e91 100644
--- a/tests/Authress.SDK/Client/Tokenverifier/VerifyTokenTests.cs
+++ b/tests/Authress.SDK/Client/Tokenverifier/VerifyTokenTests.cs
@@ -58,6 +58,32 @@ public async Task ValidateEddsaToken() {
             mockHttpClient.VerifyAll();
         }
 
+        [Fact]
+        public async Task ValidateEddsaTokenWithExtraSpaces() {
+            var testUserId = Guid.NewGuid().ToString();
+            var testKeyId = Guid.NewGuid().ToString();
+            var authressClientTokenProvider = new AuthressClientTokenProvider($"{testUserId}.{testKeyId}.account.{eddsaKeys.Item1}", authressCustomDomain);
+            // setup
+            var edDsaJwkResponse = new JwkResponse { Keys = new List<Jwk> { new Jwk { Alg = Alg.EdDSA, kid = testKeyId, x = eddsaKeys.Item2 } } };
+            var jwtToken = await authressClientTokenProvider.GetBearerToken();
+
+            var mockHttpClient = new Mock<HttpClientHandler>(MockBehavior.Strict);
+            mockHttpClient.Protected().SetupSequence<Task<HttpResponseMessage>>("SendAsync", ItExpr.IsAny<HttpRequestMessage>(), ItExpr.IsAny<CancellationToken>())
+                .ReturnsAsync(() => new HttpResponseMessage { StatusCode = HttpStatusCode.OK, Content = edDsaJwkResponse.ToHttpContent() });
+
+            var mockFactory = new Mock<IHttpClientHandlerFactory>(MockBehavior.Strict);
+            mockFactory.Setup(factory => factory.Create()).Returns(mockHttpClient.Object);
+
+            var mockHttpClientProvider = new HttpClientProvider(null, null, mockFactory.Object);
+            var tokenVerifier = new SDK.TokenVerifier(authressCustomDomain, mockHttpClientProvider);
+
+            var result = await tokenVerifier.VerifyToken("Bearer " + jwtToken);
+            result.Should().BeEquivalentTo(new VerifiedUserIdentity { UserId = testUserId });
+
+            mockFactory.Verify(mockFactory => mockFactory.Create(), Times.Once());
+            mockHttpClient.VerifyAll();
+        }
+
         private static (string, string) rsa512Keys = ("-----BEGIN PRIVATE KEY-----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-----END PRIVATE KEY-----", "-----BEGIN PUBLIC KEY-----MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAwpSsdK3DeYYLS6wq1LaXhKwbvMAECFNEXN5p2+SnIOMJ+hBrz4coQk1VaQ7QXRcil5oN4cISOe8jjdo3opB7K96RZugG4E7OJR5cBScRCK0GDrw+cMRnosuW6DkwiFpduzraISTmIkah76Fc5bXDhYBEk701yA9LSAyTJ8gA361Mlw9rWrx6Kmon4RjfXk/Tm7JxqOzmiIkrKb4Jv0s/M1Qbpr/AzAzPRTJTj6nlxRYctQAxEOC0Iembie4bO/GlQY6u70JpVmLFrtciJQuELn4YZ7ef5QLFUx6dmJhKmR1qaqwWrrNZF5oRv2GTL80S3y5L9b4tus/zCaHpgNxObQIDAQAB-----END PUBLIC KEY-----");
 
         [Fact]