> ## Documentation Index
> Fetch the complete documentation index at: https://cts-docs.cosmos.network/llms.txt
> Use this file to discover all available pages before exploring further.

# Components

> The components of the Cosmos Tokenization Suite and their responsibilities.

## Tokenized deposits app

The tokenized deposits app is the application layer of the Cosmos Tokenization
Suite. It drives tokenization, maintains the operational view of both ledgers
and their reconciliation status, and provides the interface for bank staff.

The app connects to the bank's existing enterprise applications through the
policy and logs interface. Identity management, compliance and risk, and the
bank's policy engine continue governing activity without being reimplemented.

## Digital ledger

The digital ledger is the blockchain ledger CTS creates alongside the
core. It holds the tokenized representation of deposits, giving the bank access
to custody services, other networks, and counterparty banks.

The bank chooses whether the digital ledger runs on the Cosmos EVM ledger or its
own ledger. See [Digital Ledger Support](/digital-ledger-support/overview).

## Ledger sync

Ledger sync is the bidirectional link between the core ledger and the digital
ledger.

Tokenization reads core transactions and writes the corresponding entries to the
digital ledger. Writeback pushes digital ledger activity back to the core.
Because most cores already exchange this data through ISO 20022, transactions
are retrieved as `camt.054` messages. See
[ISO 20022 Messaging](/banking-core-integrations/iso-20022).

CTS keeps the reconciliation status between the two ledgers continuously
visible. See
[Reconciliation](/banking-core-integrations/reconciliation).

## Custody connectors

A custody connector is the interface to a digital asset custody provider. The
provider supplies the wallets and addresses the bank uses for digital assets
such as settlement stablecoins, and it can custody assets on behalf of the
bank's clients. Providers include established firms such as Fireblocks and
Anchorage, and a bank's own hardware security modules when it holds its own
keys.

CTS never holds private keys for assets on a shared or public network. It
issues signing requests, and the custodian applies the bank's policy before
signing. See
[Digital Asset Custody](/digital-asset-custody/overview).

## Networks connectors

A network connector is the interface to an external network across three tiers:

| Tier      | Purpose                                                                         |
| --------- | ------------------------------------------------------------------------------- |
| Public    | Reach to existing digital asset infrastructure and assets such as USDC and EURC |
| Consortia | Shared networks operated by a group of institutions                             |
| Private   | Other banks' own networks, including counterparties running CTS                 |

Connectors determine which assets the bank can host for clients. They also
determine which networks can receive a client's tokenized deposit from the bank.

## Core connectors

A core connector is the integration point for the bank's existing core banking
platform. Supported integration points cover Fiserv, Jack Henry,
ISO 20022 file drops, and others.

For Fiserv-based cores, CTS is available pre-integrated through the Fiserv
App Market. See
[Banking Core Integrations](/banking-core-integrations/overview).

## Settlement bus

The settlement bus is the path for settling interbank obligations between the
originating and receiving institutions' core ledgers. See
[Settlement Asset Custody for 24/7 Payments](/digital-asset-custody/settlement-for-payments).