You are a Spanish tax resident. You hold crypto in self-custody or on exchanges. You have heirs. You have not yet resolved how they will access what you leave them.

Every free guide you have found stops exactly where the problem begins.

The wallet survives you. The access does not — unless you designed it to. The blockchain does not need you alive to keep working. Your seed phrase, your exchange accounts, your self-custody architecture — none of them transition to your heirs on their own. If they are not prepared before death, the portfolio is visible on-chain for the rest of time and reachable by no one. The AEAT still knows it exists. The heirs still owe tax on it. They cannot touch it.

This manual is the procedure that closes that gap — before it opens.

🗂️ What This Framework Solves

The seed phrase problem. Three architectures exist — single-signature with a dead-man switch, multisig with named co-signers, and Shamir Secret Sharing — and each one is correct in a different estate range. The wrong one is worse than none. The book walks the decision tree and the rehearsal cadence.

The ISD regional matrix. Spain has seventeen inheritance tax regimes plus two foral systems. The same €2M estate in 100% crypto generates a €20,000 ISD bill in Andalucía and a €220,000 bill in Cataluña for the same family. The book explains why, region by region.

The six-month clock. Modelo 650 is not a formality — it is a payment obligation due six months from the date of death, extendable by six more, on request. The book walks the exact sequence: NIF acquisition, valuation methodology, filing, justificante, escritura.

The liquidity trap. The heirs owe the ISD in euros within six months. The crypto is frozen pending the escritura. The escritura requires the ISD to have been paid. The circular dependency is total, and the book names the three escape hatches — the fiat reserve, the life insurance wrapper, and the inter-vivos donation with a five-year horizon.

Cross-border succession. EU Regulation 650/2012 lets a foreign national elect their own national law via professio juris — a single clause in a valid will. Without it, Spanish legítimas apply, and two-thirds of the estate is reserved to the descendants regardless of what the will intended.

The proof problem. A Spanish notary cannot verify wallet ownership. The acta de manifestación binds NIF to public address before death. Without it, the heir must reconstruct possession from on-chain forensics.

Pre-mortem restructuring. The trap can be defused. The book details the fiat liquidity buffer, the donation timing rule that neutralizes gifts within three years, and the corporate wrapper that shifts succession from crypto to shares.

The case files. Eight real autopsies — the ledger in the desk drawer, the €240,000 line item that collapses to €2,400, the NIF that took fourteen weeks, the family home in Málaga sold to cover a €1,200 tax bill.

📘 What’s Inside

📖

Inside This Codex — 12 Chapters

Layer 1
The Seed Phrase Problem

Three architectures, the notary layer, the rehearsal cadence

Layer 2
The ISD Regional Matrix

State baseline, group classification, Andalucía / Madrid / Cataluña

Layer 3
Modelo 650 and the Six-Month Clock

Deadline mechanics, NIF precondition, filing sequence

Layer 4
Valuation at Death

Evidence hierarchy, multi-exchange divergence, self-custody rule

Layer 5
Cross-Border Succession and Legítimas

EU 650/2012, professio juris, the collision

Layer 6
The Proof Problem

On-chain evidence, acta de manifestación, the notary's refusal

Layer 7
The Liquidity Trap

The circular dependency, the three failure points, the pre-mortem solutions

Layer 8
Pre-Mortem Restructuring

Fiat buffer, inter-vivos donations, corporate wrapper, annual review

Appendix T
Templates T1–T11

Wallet inventory, valuation sheet, Modelo 650 checklist, letter to heirs, NIF sequence

Appendix C
Consulta Vinculante Tracker

DGT rulings, four modeled questions, tracking sheet

97 pages. 6×9 format. Same design system as the five books already in the Rooted Nomad collection.

This is a framework, not legal advice. Spanish succession law is technical and jurisdiction-specific. Every layer ends with the same recommendation: engage a Spanish abogado and a notario before any act with legal consequence. The book prepares you to brief them with precision. It does not replace them.

FAQ

Do I need to hold crypto in self-custody to benefit from this framework?

No. The framework covers both self-custody and exchange-held crypto. Exchange-held crypto is actually the harder case for valuation and account freezing, because the exchange controls the release of funds. Layers 4, 6, and 7 walk the specific mechanics for each.

Is this the same as the Source of Funds Dossier?

No. The Dossier teaches you to prove the origin of accumulated crypto wealth to a banker, a notary, or a regulator. This framework is about succession: what happens to the portfolio on the date of death, how the ISD is computed, how the heirs access the assets, and how the pre-mortem restructuring defuses each trap. The Dossier is for the bank conversation. The framework is for the funeral and everything after it.

What if my heirs are not in Spain?

That is the most common case, and it is covered in full. Layer 5 handles EU Regulation 650/2012, the professio juris election, and the NIF acquisition sequence for foreign heirs — including the fourteen-week bottleneck documented in Case File 3 and Template T11.

Does this cover the Beckham Law?

Indirectly. The framework does not re-teach the Beckham regime itself — that is covered in The Crypto Freelancer’s Autónomo Playbook. What the framework covers is the succession consequence: whether the Beckham election affects the ISD regional matrix (it does not), and whether the professio juris election is compatible with Beckham status (it is, with conditions).

What if my portfolio is under €200,000?

The framework is written for portfolios from €200K upward. Below that threshold, the single-signature architecture with a sealed instruction is generally sufficient, and the corporate wrapper is not worth its fixed costs. The book says so explicitly in Layer 1 and Layer 8. If you are under €200K, read Layers 1 and 6, and defer the rest.

How long is the framework?

97 pages. Eight layers. Two appendices. Eleven printable templates. Five case files in the layers. Twelve questions answered in Appendix F.

The Rest of the Shelf

This is the sixth book in the Rooted Nomad collection. The others close earlier loops:

  • Before You Land — prepares your crypto for the Spanish threshold before you cross it.
  • The Crypto Holder’s Bank Playbook — keeps your money working when a bank closes the door.
  • The December 31st Protocol — keeps your holdings visible when the AEAT holds up the mirror.
  • The Source of Funds Dossier — teaches you to prove the origin of what you hold.
  • The Crypto Freelancer’s Autónomo Playbook — registers, invoices, files, defends, and exits the autónomo status.

The full collection lives at salahnomad.com.

The Crypto Inheritance Framework. 97 pages. First Edition, September 2026. Sixth book in the Rooted Nomad collection.

Updates logged at salahnomad.com/crypto-inheritance-framework/updates/.