There is a specific kind of silence at 23:59:59 on the thirty-first of December. In that second, the Hacienda takes a photograph. Not a metaphor — a literal accounting snapshot of every crypto asset you hold outside Spain, valued at that exact instant, stamped for the tax year about to end.

Most people do not know the photograph is being taken. Fourteen months later, they receive a letter that begins with the word requerimiento and ends with a number. Usually €1,500. Sometimes more.

This is the field manual that tells you exactly what the snapshot captures, how to prepare for it in ninety days, and how to file the Modelo 721 without triggering the correction protocol.

⚖️ What This Protocol Solves

The 90-Day Countdown — D-90 to J-0, with five concrete waypoints. Full inventory, Cl@ve PIN, dry-run snapshot, freeze date, evidence capture. Miss two waypoints and you are filing at risk.

The CNMV Situs Matrix — Post-MiCA (July 1st, 2026), the domestic/foreign map was redrawn. Binance is no longer a straightforward domestic custodian. Bit2Me, Openbank, BBVA, and Cecabank are. The matrix tells you which assets count toward the €50,000 threshold and which do not.

The Snapshot Valuation Engine — Spot price at 23:59:59 CET on December 31st. Not FIFO. Not cost basis. The exact method, three admissible price sources, and the spreadsheet structure.

The Sede Electrónica Walkthrough — Seven checkpoints, field by field. The Cl@ve PIN bottleneck nobody warns you about. The “Ejercicio” field that catches first-time filers. The 16-character justificante you must preserve.

The Correction Protocol — The 90-day grace window. Three scenarios, three penalty regimes. File early, review, correct before March 31st, pay zero.

Three Case Files — Marcus (first-year nomad, €222,500 portfolio), Sarah and Tom (mixed-regime couple), David (HNW multi-wallet founder). Numbers preserved, mechanics documented.

📘 What’s Inside

📖

Inside This Codex — 13 Chapters

1
The Midnight Mirror

The snapshot that does not wait for you. Penalty anatomy. The grace window.

2
The Geography Decision

Post-MiCA situs matrix. CNMV registry. The moving-asset caveat.

3
The 90-Day Countdown

D-90 to J-0. Inventory, Cl@ve, dry-run, freeze, evidence capture.

4
The Cl@ve and Sede Walkthrough

FNMT vs Cl@ve PIN. Decision matrix. The bottleneck nobody warns about.

5
The Snapshot Valuation Engine

Spot price vs FIFO. Three sources. The spreadsheet structure.

6
The Filing Ritual

The Sede, field by field. Seven checkpoints. Saving draft vs submitting.

7
The Correction Protocol

Three scenarios. Recargo brackets. The scout's calendar.

8
Case Files

Marcus, Sarah and Tom, David. Numbers preserved.

Appendix A
Glossary of the Modelo 721

15 terms, decoded.

Appendix B
Master Checklist — The 90-Day Countdown

Printable on one page.

Appendix C
The Spreadsheet Template

Formulas, worked example, evidence log.

Do I need Bitcoin to buy this guide?

No — Bitcoin is optional. USDC, the dollar-pegged stablecoin, works exactly the same way at checkout. And if you don’t hold crypto yet, card payment will be added when our processor approval is complete. Until then, the bankless road is open — here is the 4-step guide.

When do I receive the PDF after payment?

As soon as the network confirms. Once the payment is confirmed on the blockchain (usually within minutes), the delivery email is sent automatically. Your download link is valid for 7 days and allows 5 downloads.

Is this legal or tax advice?

No — it is a field manual. I am not an abogado tributarista, not a gestor, not a compliance officer. Every figure, every deadline, and every CNMV registry reference must be verified against current AEAT guidance at the time of your filing. The book prepares you to ask better questions and to verify the answers you receive. That is not a legal sentence I hide behind. It is the philosophy, repeated one more time.

The collection

Before You Land prepares your crypto for the Spanish threshold. The Crypto Holder’s Bank Playbook keeps it working when a bank closes the door. The December 31st Protocol keeps it visible when the AEAT holds up the mirror. Three field manuals, one perimeter.

“The mirror is held up whether you look at it or not. The only question is whether, when you look, you recognize what you see.”

— Salah Nomad