Invoices & Point of Sale

Invoices

What Are goBlink Invoices?

goBlink invoices are professional payment documents that include a built-in crypto payment option. You create an invoice in the merchant dashboard, fill in the client and line item details, and goBlink generates a shareable document with an embedded payment link. When the client opens the invoice, they can pay with any token on any supported chain, and you receive settlement in your preferred token.

Invoices are ideal for freelancers, agencies, and service businesses that need to bill clients with clear line items, due dates, and payment terms.

Creating an Invoice

1. Go to the Invoices tab in the merchant dashboard.
2. Click Create Invoice.
3. Fill in the invoice details:

Field	Required	Description
Invoice number	Auto-generated	A sequential number like INV-2026-0042. You can edit it.
Client name	Yes	The name of the person or business being billed.
Client email	Optional	If provided, goBlink can send the invoice directly via email.
Issue date	Yes	Defaults to today.
Due date	Yes	The payment deadline. Invoices become "Overdue" after this date.
Currency	Yes	The currency for line item amounts (USD, EUR, GBP, etc.).
Line items	Yes (at least one)	Description, quantity, unit price, and total for each line item.
Tax rate	Optional	A percentage added to the subtotal.
Discount	Optional	A fixed amount or percentage subtracted from the subtotal.
Notes	Optional	Payment terms, thank-you message, or other notes displayed on the invoice.

Line Items

Each line item has:

• Description -- What you are billing for (e.g., "Website redesign -- Phase 1").
• Quantity -- Number of units.
• Unit price -- Price per unit in the invoice currency.
• Amount -- Automatically calculated as quantity times unit price.

You can add as many line items as you need. The subtotal, tax, discount, and grand total are calculated automatically.

Invoice Preview

Before sending, click Preview to see exactly what the client will receive. The invoice includes:

• Your business name, logo, and contact information
• The client's name and details
• A professional table of line items with subtotal, tax, discount, and total
• Due date and payment status
• A prominent Pay Now button that opens the goBlink checkout page

Sending Invoices

You have three options for delivering an invoice:

• Email -- If you entered a client email, click Send to deliver the invoice via goBlink's email system. The email includes a PDF attachment and a direct link to the payment page.
• Share link -- Copy the invoice URL and send it through any channel (Slack, WhatsApp, etc.).
• Download PDF -- Download a PDF version for offline delivery or record-keeping.

Invoice Statuses

Status	Meaning
Draft	The invoice has been created but not sent to the client.
Sent	The invoice has been sent or the link has been shared.
Viewed	The client has opened the invoice link (tracked via URL).
Paid	The client has completed payment through the invoice.
Overdue	The due date has passed without payment.
Void	You manually voided the invoice. It can no longer be paid.

Automatic Reminders

goBlink can send automatic email reminders for unpaid invoices:

• Before due date -- An optional reminder 3 days before the due date.
• On due date -- A reminder on the day the payment is due.
• After due date -- Reminders at 3, 7, and 14 days after the due date for overdue invoices.

Enable or disable reminders per invoice or set a default policy in Settings > Invoices.

Recurring Invoices

For clients you bill regularly, create a recurring invoice:

1. Create an invoice as usual.
2. Toggle Make Recurring before saving.
3. Set the recurrence frequency: weekly, bi-weekly, monthly, quarterly, or annually.
4. Set an optional end date or number of occurrences.

goBlink automatically creates and sends a new invoice at each interval with an incremented invoice number. Recurring invoices use the same line items, client details, and payment terms as the template.

Point of Sale (POS)

What Is the goBlink POS?

The goBlink POS is a browser-based point-of-sale terminal designed for accepting in-person crypto payments. It works on any device with a browser -- tablets, phones, laptops -- and generates QR codes that customers scan with their wallet to pay.

The POS is ideal for:

• Retail stores accepting crypto alongside traditional payment methods
• Market vendors and pop-up shops
• Restaurants and cafes
• Event ticket counters
• Service providers who meet clients in person

Accessing the POS

1. In the merchant dashboard, go to Settings > POS.
2. Click Enable POS.
3. The POS terminal is accessible at merchant.goblink.io/pos when you are logged in.
4. For dedicated POS devices (e.g., a tablet at a checkout counter), you can create a POS-only login that restricts access to the POS screen only, without access to the full dashboard.

Using the POS

Quick Charge

The fastest way to accept a payment:

1. Open the POS terminal.
2. Enter the payment amount using the on-screen keypad.
3. Optionally add a description or reference number.
4. Tap Charge.
5. A QR code appears on screen. The customer scans it with their wallet app.
6. The customer selects their payment token and confirms the transaction in their wallet.
7. The POS screen updates in real time: scanning, confirming, completing, done.
8. When the payment completes, the screen shows a green checkmark and the settlement details.

Item-Based Checkout

If you have a product catalog configured, you can use item-based checkout:

1. Open the POS terminal and tap Items.
2. Browse or search your product catalog.
3. Tap items to add them to the cart. Adjust quantities as needed.
4. The total is calculated automatically, including any configured tax.
5. Tap Charge to generate the QR code.
6. The customer scans and pays as with Quick Charge.

Product Catalog

Set up your product catalog in Settings > POS > Products:

Field	Description
Product name	The item name displayed on the POS screen and receipt.
Price	The price in your configured currency.
Category	Optional grouping (e.g., "Beverages," "Accessories").
SKU	Optional stock-keeping unit for inventory tracking.
Image	Optional product image displayed on the POS.

Products can be added manually or imported via CSV. There is no limit on the number of products.

Receipts

After every POS transaction, goBlink can:

• Display a digital receipt on the POS screen that the customer can photograph.
• Send an email receipt if the customer provides their email address (optional).
• Print a receipt if the POS device is connected to a receipt printer via the browser's print dialog.

Receipts include the business name, items purchased, total, payment method (token and chain), transaction hash, and timestamp.

POS Settings

Setting	Description
Currency	The fiat currency displayed on the keypad and product prices.
Tax rate	Default tax rate applied to all POS transactions.
Tip options	Optional tip percentages displayed after the customer scans (e.g., 10%, 15%, 20%).
Receipt behavior	Automatically show receipt, prompt for email, or skip.
Sound notifications	Play a sound when a payment completes.
Idle timeout	Lock the POS screen after a period of inactivity (for shared devices).

Offline Considerations

The goBlink POS requires an internet connection to generate QR codes and process payments. It does not support offline mode. Make sure your POS device has a reliable internet connection. If the connection drops mid-payment, the payment will continue processing on-chain and the POS will sync the result when the connection is restored.

Invoices vs. Payment Links vs. POS

Feature	Invoices	Payment Links	POS
Best for	Billing clients with line items	Simple online payments	In-person payments
Itemized billing	Yes	No	Optional (with catalog)
Due dates	Yes	Optional expiration	N/A
Email delivery	Yes	Manual sharing	N/A
QR code	On the invoice page	Available	Primary interface
Recurring	Yes	No	N/A
PDF export	Yes	No	Receipts only
API creation	Yes	Yes	No (dashboard only)