Registration and Account in nmrXiv

Before you submit data to nmrXiv, you need an nmrXiv account.

Create a new account

1. Open nmrXiv.
2. Click Register.
3. Fill in the registration form.
4. (Optional) Use the ORCID button to fetch your ORCID details.
5. Accept the Terms of Service and Privacy Policy.
6. Click REGISTER.

Verify your email

After registration, nmrXiv asks you to verify your email address.

1. Open your email inbox.
2. Find the verification email from nmrXiv.
3. Click Verify Email Address in that email.
4. If you did not receive the email, click RESEND VERIFICATION EMAIL.

Login with email and password

After your email is verified, you can log in with your nmrXiv credentials.

1. Go to the login page.
2. Enter your email and password.
3. Click LOG IN.

Forgot password

If you forgot your password, you can reset it from the login page.

1. Open the login page.
2. Click Forgot your password?.
3. Enter your account email address.
4. Click EMAIL PASSWORD RESET LINK.
5. Open the reset email and follow the link to set a new password.

If your account has two-factor authentication enabled, enter the code from a compatible authenticator app and click LOG IN. nmrXiv uses a standard authenticator app–based login flow. Google Authenticator is supported, and other compatible apps, such as Microsoft Authenticator, Authy, 1Password, or similar authenticator apps, should also work.

Access your account settings

After login, you can open your account settings from the top-right user menu.

1. Click your name in the top-right corner.
2. In the dropdown menu, under Manage Account, click Account.

In the Account page, you can manage your user settings and security options.

1. Update profile information (name, email, profile photo, affiliation, ORCID, and related profile fields).
2. Change your password.
3. Enable, confirm, or disable two-factor authentication.
4. View and log out other active browser sessions.

Two-factor authentication (2FA)

Two-factor authentication adds a second step to your login. Besides your password, you enter a 6-digit code that changes every 30 seconds and is generated by an authenticator app on your phone. This protects your account even if your password is compromised.

nmrXiv works with any standard authenticator app (TOTP), such as Google Authenticator, Microsoft Authenticator, Authy, or 1Password. The steps below use Google Authenticator on an Android phone or an iPhone as an example.

Step 1: Install an authenticator app

• Android: Open the Google Play Store, search for Google Authenticator, and tap Install.
• iPhone: Open the App Store, search for Google Authenticator, and tap Get.

Step 2: Enable 2FA in nmrXiv

1. Log in to nmrXiv and open the Account page (see Access your account settings).
2. Scroll down to the Two Factor Authentication section.
3. Click ENABLE.
4. If prompted, confirm your password and click CONFIRM.
5. nmrXiv now shows a QR code and a list of recovery codes. Keep this page open.

Step 3: Add your nmrXiv account to the app

1. Open Google Authenticator on your phone.
2. Tap the + button (Android: bottom-right corner; iPhone: bottom-right corner or top-right corner, depending on the app version).
3. Choose Scan a QR code. Allow camera access if you are asked.
4. Point your phone camera at the QR code shown on the nmrXiv Account page.
5. An nmrXiv entry now appears in the app with a 6-digit code.

If you cannot scan the QR code, choose Enter a setup key in the app instead. Enter an account name (for example, nmrXiv) and the setup key displayed below the QR code on the nmrXiv page, keep Time based selected, and tap Add.

Step 4: Save your recovery codes

Copy the recovery codes shown below the QR code and store them in a secure place, such as a password manager. If you lose your phone or cannot access your authenticator app, you can use one of these codes to log in. Each recovery code can be used only once.

Log in with 2FA

1. Enter your email and password on the login page and click LOG IN.
2. When nmrXiv asks for an authentication code, open the authenticator app and enter the current 6-digit code for nmrXiv.
3. Click LOG IN.

If you do not have access to your phone, click Use a recovery code and enter one of your saved recovery codes.

Manage 2FA

From the Two Factor Authentication section of the Account page you can:

• Regenerate Recovery Codes to get a new set of codes. The old codes stop working.
• Disable to turn off two-factor authentication.

Troubleshooting

• Codes are rejected: Make sure the date and time on your phone are set to automatic. Authenticator codes depend on accurate time.
• QR code does not appear after clicking Enable: Refresh the page with a hard refresh (Ctrl+Shift+R on Windows/Linux, Cmd+Shift+R on macOS) and try again.
• Lost your phone and recovery codes: Contact us at info.nmrxiv@uni-jena.de or helpdesk@nfdi4chem.de.

Login/Register with NFDI AAI (Single Sign-On)

You can also log in using NFDI AAI from the same login page.

1. Open the nmrXiv login page.
2. Click the NFDI4Chem button.
3. You will be redirected to the NFDI AAI page.
4. Select your home organization and click Proceed.

5. Sign in on your institution login page.

6. After successful authentication, you are redirected back to nmrXiv.

Notes:

• On first SSO login, nmrXiv can create your account automatically.
• On later logins, your same account is reused.
• Your identity provider must share your name and email with nmrXiv.

You are now ready to use nmrXiv!

Important: Account Deletion Policy

Users cannot delete their nmrXiv account by themselves.

If you want your account to be deleted, please contact us at:

• info.nmrxiv@uni-jena.de
• helpdesk@nfdi4chem.de

This process is handled manually to protect data integrity and traceability in the repository, especially when accounts are connected to submissions, shared resources, or published records.