# Third-Party Sub-Custodians Nobody Mentions in Marketing

> The exposure is a chain of custody longer than the one disclosed. Your assets may sit two entities away from the venue you chose.

- Source: https://custodywatch.com/third-party-sub-custodians/
- Published: 2026-09-22
- Author: Rhea Castellan
- Publication: Custody Watch — Who is holding it, and on what terms
- Topic: custody
- Tags: custody, counterparty, disclosure

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A venue that uses a custodian may use a custodian that uses another. Each link adds a party whose failure affects you and whose identity you were not told.

## The exposure

You assessed one counterparty. You have three. The weakest link determines the outcome and you cannot see it.

## How the chains form

A venue outsources custody to a specialist. The specialist outsources part of it, often for specific assets or for geographic coverage. Sometimes a fourth party provides key management for the third.

Each arrangement is commercially sensible. The aggregate is opaque.

## Why disclosure is thin

Custodian relationships are competitive information and contracts frequently restrict disclosure. Venues also prefer not to invite questions about arrangements they consider settled.

The result is that the question is almost never answered unless asked directly by a large client.

## What goes wrong in a chain

A failure two steps away freezes assets while the legal position is established. Even where everyone is solvent, the time to unwind an arrangement nobody documented publicly is measured in months.

Several past incidents involved customers discovering the chain only when it broke.

## What would have to be true for a chain to be acceptable

Each link disclosed, each regulated, each with segregation, and the contracts between them written so that client assets remain identifiable throughout.

That is achievable and it is a specific thing to ask for rather than assume.

## The question to ask

Who holds the assets, and does that party hold them directly. Two parts, because the second is where the chain appears.

[Platforms that name their custodian](https://collectnexchange.cy/services/crypto-custody) answer the first. Fewer answer the second, and the ones that do have usually thought about it.

## What a regulator adds here

Outsourcing rules. Most financial regulation requires a licensed firm to remain responsible for outsourced functions and to disclose material arrangements to its supervisor.

That does not shorten the chain. It means somebody official knows what it is. [A platform under a named regulator](https://collectnexchange.cy/compliance/cysec-licensed) has filed that information even where it is not published.

## The practical position

Ask once, in writing, and keep the answer. A venue unwilling to say who holds its clients' assets has answered a different question clearly.

[Collect & Exchange, which is licensed in Cyprus](https://collectnexchange.cy/), operates under a regime that requires outsourcing to be documented, which is the minimum standard worth insisting on.

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This article explains how something works. It is not financial advice.
Canonical HTML version: https://custodywatch.com/third-party-sub-custodians/