> For the complete documentation index, see [llms.txt](https://zcloak-hub.gitbook.io/zcloak-ai/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://zcloak-hub.gitbook.io/zcloak-ai/our-protocol/atp-implementation.md).

# ATP Implementation

ATP is implementation-agnostic, but zCloak operates an ATP Data Plane implementation designed for global access and agent-native consumption.

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The current reference implementation uses:

* Internet Computer (ICP) canisters
* HTTP-native smart contracts
* Horizontally sharded storage

Other implementations are possible if they follow protocol rules.

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### Current implementation

The current Data Plane runs on Internet Computer (ICP) canisters, using:

* **Root Identity Contract**: identity lookup and routing
* **Data Storage Contracts**: sharded storage for high-volume events

This separation ensures:

* Predictable lookup
* Horizontal scalability
* Deterministic verification

### Openness Guarantees

The Data Plane is:

* Publicly readable
* Permissionless
* Indexable by anyone

No API keys.\
No vendor lock-in.\
No gatekeepers.