diff --git a/keys/README.md b/keys/README.md
new file mode 100644
index 0000000..4481816
--- /dev/null
+++ b/keys/README.md
@@ -0,0 +1 @@
+## Keys - public/private key pairs for certificate QR signing and verification
diff --git a/middleware/captcha.js b/middleware/captcha.js
new file mode 100644
index 0000000..489d84c
--- /dev/null
+++ b/middleware/captcha.js
@@ -0,0 +1,36 @@
+const fetch = require("cross-fetch");
+
+const typedefs = require("../typedefs");
+const logger = require("../utils/logger")(module);
+
+/**
+ * Google ReCAPTCHA v2 verification
+ * 
+ * @param {typedefs.Req} req 
+ * @param {typedefs.Res} res 
+ * @param {typedefs.Next} next 
+ */
+const verifyCaptcha = async (req, res, next) => {
+	try {
+		const secretKey = process.env.CAPTCHA_SECRET;
+
+		const verifyCaptchaURL = `https://google.com/recaptcha/api/siteverify?secret=${secretKey}&response=${req.body.captcha}`;
+
+		const captchaResp = await fetch(verifyCaptchaURL);
+		const captchaData = await captchaResp.json();
+		if (captchaData.success !== undefined && !captchaData.success) {
+			logger.error("Recaptcha", { captchaData });
+			return res.status(403).send({
+				message: "Failed captcha verification"
+			});
+		}
+		next();
+	} catch (error) {
+		logger.error("Error", { error });
+		return res.status(500).send({ message: "Server Error. Try again." });
+	}
+}
+
+module.exports = {
+	verifyCaptcha
+}
\ No newline at end of file
diff --git a/models/index.js b/models/index.js
index 047dbf0..475acb0 100644
--- a/models/index.js
+++ b/models/index.js
@@ -2,7 +2,7 @@
 const fs = require("fs");
 const path = require("path");
 const Sequelize = require("sequelize");
-
+const logger = require("../utils/logger")(module);
 const basename = path.basename(__filename);
 const env = process.env.NODE_ENV || "development";
 const config = require(__dirname + "/../config/sequelize.js")[env];
@@ -16,6 +16,16 @@ if (config.use_env_variable) {
   sequelize = new Sequelize(config.database, config.username, config.password, config);
 }
 
+sequelize.authenticate()
+  .then(
+    () => {
+      logger.info('Sequelize auth success');
+    },
+    (err) => {
+      logger.error('Sequelize auth error', { err });
+    }
+  )
+
 // Read model definitions from folder
 fs
   .readdirSync(__dirname)