Your invoices are in order. Out of the box.
Meet Orchid.
Orquídea is OKmystay's invoicing module, compliant with Spain's Anti-Fraud Law. Chained hash, verifiable QR and real-time submission to the AEAT — without you having to think about any of it.
I want to know moreHow it works
You authorize us at the AEAT (Spanish Tax Agency)
A single online procedure on the AEAT website. You grant us the authority to invoice on your behalf—you never share your private keys. The correct power of attorney form from day one.
OKmystay generates the invoice
The invoice is issued from your management panel, compliant out of the box: hash chained to the previous one and a verifiable QR code. No separate software, nothing to export.
The AEAT receives it instantly
The system automatically sends the request to the AEAT web service and records the response. If there's an acceptable error, it retryes. Zero paperwork, no intermediaries needed.
Immutable by design
The core of Verifactu isn't the submission to the Spanish Tax Agency (AEAT)—it's the hash chain. Each invoice carries the fingerprint of the previous one. None can be modified or deleted. Orquídea builds that chain for you and keeps it intact forever.
Hash chained by NIF
Each invoice incorporates the SHA-256 hash of the previous one, forming an unalterable chain. If you manage multiple owners, each tax ID number (NIF) has its own independent chain. The Spanish Tax Agency (AEAT) can verify the integrity at any time.
FNMT certificate, secure channel
Every submission to the AEAT travels authenticated with your company FNMT certificate over a secure channel. One certificate for all your issuers — the power-of-attorney model removes the need to hold anyone else's keys.
Verifiable QR code on each invoice
Each printed invoice includes a QR code linking to the Spanish Tax Agency's website. Anyone can scan it to verify the document's authenticity. Complete confidence for the invoice recipient.
A real invoice
This is what an invoice issued by Orquídea looks like: its own series, VAT breakdown, chained fingerprint — and the QR code the AEAT requires on every invoice. Open it: it's a sample of the format, with made-up data.
View sample invoice (PDF)Why Orchid
Invoicing without leaving your management panel
In other programs, invoicing means exporting, importing and retyping. In OKmystay the invoice is issued where your bookings and payments already live — and travels to the AEAT on its own.
Compliant out of the box
Every invoice comes out compliant with the Regulation: its own series, chained fingerprint and QR. There is no "non-compliant" mode.
The guest brings the tax ID
The guest requests the invoice from their panel and enters their tax details. They reach you ready to use: you issue the named invoice without chasing tax IDs by email.
From issue to the AEAT, on its own
You issue, and the rest runs on its own: the AEAT submission, the retries if their site goes down, and the PDF for the guest. You decide when to invoice; the rest isn't your job.
Complies with Anti-Fraud Law
Chained hash, QR on every invoice, SOAP submission to the AEAT authenticated with your certificate. The Verifactu Regulation complied with, without you having to learn cryptography or SOAP.
Multi-issuer: one system, several NIFs
Do you manage properties with multiple owners or companies? Each tax ID number has its own series, its own counter, and its own hash chain—completely independent. Adding a new issuer is trivial.
Seizure, not custody of keys
We don't store your clients' certificates. You act with your own FNMT certificate on their behalf — the same legal model any accounting firm uses. A single P12, no risk of exposing anyone else's keys.
The invoice, in their inbox in one click
Generate the invoice PDF and email it to the guest whenever you want. No printing or attaching by hand: they get it ready to download or forward to their accountant.
Immutable by design
Invoices are neither edited nor deleted—ever. Only corrective invoices exist, and these are also linked together. The database is the unalterable tax record required by law.
Daemon with automatic retries
A continuous process sends each invoice to the Spanish Tax Agency (AEAT), records the response, and retries if there are acceptable errors. If something goes wrong, it notifies you. Your operations are not interrupted.
Margarita reminds, Tulipán collects, the SES is notified, Orquídea invoices. And the AEAT stays up to date in real time.
Does your accountant already comply with Verifactu?
Tell us how many property owners you manage and what your revenue is. We'll explain how Orquídea fits into your operations.
hola@okmystay.com