Solutions · Inheritance

Your Bitcoin. Your legacy.

Most Bitcoin estates are lost, not stolen. The keys are intact; the arrangement around them is not. Sentinel writes the arrangement down, checks that it can actually be spent by the people you intend, and gives you a document an executor can follow.

  • Succession path
  • Timelocks
  • Recovery documentation
  • Key ceremony design
Check my inheritance readiness7 questions. No account. Nothing leaves your browser.
SENTINELCustody Policy Brief
Verified · PASS · sample
Prepared for
The Estate of [Holder]
Prepared by
[Advisor], BCGA Associate
Arrangement
2-of-3 with 18-month recovery path
Verified
Sample · September 2026
§3 · What the executor does
page 3 of 9sha256 · 9f3c…a71e

Verify it yourself

Don't take the brief's word for it.

The verdict on a policy is not an opinion. It comes from a proof engine that can be run on the same policy again and will say the same thing. Running it yourself is what the note below is holding a place for.

ENGINE · GUARANTEESdeterministic · no external calls
  1. 1The verdict is produced by a deterministic proof engine: the same policy gives the same result every time.
  2. 2Verifying a policy is a computation, not a call to a model or a service; the engine has no network dependency of its own.
  3. 3It contains no model, no temperature and no judgement call; nothing above it can overrule it.
Same input, same verdict. Run it again in ten years.Verify it yourself: available after publication

What goes wrong

Three ways an estate is lost with the keys intact.

  • The recovery path exists only in the holder's head.

    A 2-of-3 is sound while the holder is alive. The day it matters, nobody knows which two, where they are, or what the third was for.

    Q6 · Backup & recovery material storage

  • The executor cannot read a descriptor.

    A will that says "the Bitcoin" and a wallet file are not instructions. The person who has to act needs a document in their own language.

    Q4 · Succession plan in place?

  • The timelock was designed and never set.

    Policies are drafted on paper and deployed differently. Only a check against the policy itself proves the succession path can be spent.

    Q1 · Current custody method

What Sentinel checks for this

7 questions, weighted for succession.

The same assessment serves every concern. For inheritance, the succession question carries the most weight in the score, and the brief that follows is written around it.

The result is a governance score across five pillars and a written brief. It is not legal advice, and it does not replace the lawyer who will reference it.

  1. Q4Succession plan in place?Policy · ×1
  2. Q1Current custody methodTechnical · ×1
  3. Q2Total asset value range (USD equivalent)Operational · ×1
  4. Q3Local regulatory postureCompliance · ×1
  5. Q5Last security auditOperational · ×1
  6. Q6Backup & recovery material storageOperational · ×1
  7. Q7Holder identity exposure & physical recovery posturePhysical · ×1

Pillars and weights from the assessment template v1.1.0. The questions in bold are the ones this concern weighs first.

What Sentinel does not do

It never holds the keys.

Sentinel is non-custodial by design. It reads a policy; it does not hold a key, sign a transaction, or see a seed. The brief it produces is yours to give to your lawyer, your executor, or nobody.

Begin with the assessment. Everything else follows from it.

Check my inheritance readinessFree, no account. The score and the written policy are free; the PDF brief is Sentinel Pro.

Sample brief and verdict are synthetic and labelled as such. Questions from the assessment template v1.1.0. Custody Agents S.L., Barcelona.

Custody Agents S.L.