diff --git a/package-lock.json b/package-lock.json
index 47ca71b..5f8e4fe 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -7,6 +7,9 @@
     "": {
       "version": "0.1.0",
       "license": "AGPL-3.0-or-later",
+      "dependencies": {
+        "valid-url": "^1.0.9"
+      },
       "devDependencies": {
         "chai": "^4.2.0",
         "license-check-and-add": "^3.0.4",
@@ -1462,6 +1465,11 @@
       "integrity": "sha1-RQ1Nyfpw3nMnYvvS1KKJgUGaDM8=",
       "dev": true
     },
+    "node_modules/valid-url": {
+      "version": "1.0.9",
+      "resolved": "https://registry.npmjs.org/valid-url/-/valid-url-1.0.9.tgz",
+      "integrity": "sha1-HBRHm0DxOXp1eC8RXkCGRHQzogA="
+    },
     "node_modules/which": {
       "version": "2.0.2",
       "resolved": "https://registry.npmjs.org/which/-/which-2.0.2.tgz",
@@ -2769,6 +2777,11 @@
       "integrity": "sha1-RQ1Nyfpw3nMnYvvS1KKJgUGaDM8=",
       "dev": true
     },
+    "valid-url": {
+      "version": "1.0.9",
+      "resolved": "https://registry.npmjs.org/valid-url/-/valid-url-1.0.9.tgz",
+      "integrity": "sha1-HBRHm0DxOXp1eC8RXkCGRHQzogA="
+    },
     "which": {
       "version": "2.0.2",
       "resolved": "https://registry.npmjs.org/which/-/which-2.0.2.tgz",
diff --git a/package.json b/package.json
index a571453..5823047 100644
--- a/package.json
+++ b/package.json
@@ -3,7 +3,9 @@
   "version": "0.1.0",
   "description": "Decentralized OpenPGP Identity Proofs library in node",
   "main": "src/index.js",
-  "dependencies": {},
+  "dependencies": {
+    "valid-url": "^1.0.9"
+  },
   "devDependencies": {
     "chai": "^4.2.0",
     "license-check-and-add": "^3.0.4",
diff --git a/src/index.js b/src/index.js
index b562f92..7c80195 100644
--- a/src/index.js
+++ b/src/index.js
@@ -1,7 +1,12 @@
-const verify = (url, fingerprint, opts) => {
+const validUrl = require('valid-url')
+const serviceprovidersList = require('./serviceproviders').serviceprovidersList
 
+const verify = (uri, fingerprint, opts) => {
+  if !(validUrl.isUri(uri)) {
+    throw new Error('The provided URI was not valid')
+  }
 }
 
 exports.verify = verify
 exports.serviceproviders = require('./serviceproviders').serviceproviders
-exports.serviceprovidersList = require('./serviceproviders').serviceprovidersList
+exports.serviceprovidersList = serviceprovidersList