alejandro martínez
CASE STUDY · 05
CRYPTO CUSTODY FOR LAW ENFORCEMENT  ·  2022 — 2024  ·  ENGINEER

Withdrawal approvals and chain monitoring for a crypto custody platform used by law enforcement.

Asset Reality is the platform governments use to seize, hold and dispose of digital assets. In 19 months on the engineering team (Jul 2022 – Feb 2024) I was primary author of two core systems: the engine that decides whether funds can leave custody, and the service that watches the blockchains the platform holds assets on. Platform AUM went from $200M when I joined to $500M when I left. These figures are for the whole platform.

TENURE
19 mo
jul 2022 – feb 2024
AUM
$200M → $500M
platform, during tenure · $1B+ today
USERS
Gov
law enforcement in europe & north america
ROLE
2
core systems as primary author

Law enforcement needed rails for seized crypto.

When a government seizes crypto, it doesn't go into an evidence bag. It has to be moved into custody, tracked, approved for release by more than one agency, and leave a record that holds up in court. Asset Reality built the platform that does this, and I joined the engineering team in July 2022.

Two core systems and the apps around them.

01  ·  PRIMARY AUTHOR
Withdrawal approvals

Nothing leaves custody without sign-off from the right people. The engine enforces each agency's approval rules, notifies approvers as soon as a request is waiting, denies requests that can no longer be approved instead of leaving funds in limbo, and keeps a full record of who approved what.

02  ·  PRIMARY AUTHOR
Chain monitoring

A service that follows the platform's addresses across the major chains in real time, so incoming transfers and balance changes appear on the platform without anyone checking a block explorer.

03  ·  CONTRIBUTOR
Case references end to end

Agencies track assets by their own case numbers. I carried those references through every asset type on the platform, so a custody record can be matched to a court filing without a manual lookup.

04  ·  CONTRIBUTOR
Custody apps and valuation

Worked across the web apps agencies use to manage seized assets, built the services that value holdings, and led the effort to containerize the platform's services in late 2023.

What the platform became.

Platform AUM went from $200M to $500M during my 19 months, with seizure workflows live for agencies in Europe and North America. The company raised a $4.91M seed round in January 2023, has since crossed $1B in AUM, and received FCA VASP registration in July 2025.

Code that releases seized government funds changes how you write state machines: every transition has to be explainable to a court.