> For the complete documentation index, see [llms.txt](https://kusuconsult-1.gitbook.io/doerdapp-docs/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://kusuconsult-1.gitbook.io/doerdapp-docs/policy/smart-contracts-and-public-blockchains.md).

# Smart Contracts & Public Blockchains

Blockchain networks are public by nature.

When you:

* Sign a transaction
* Interact with a smart contract
* Transfer assets

That information becomes publicly accessible on the blockchain.

We do not control blockchain data.

We cannot delete it.

We cannot modify it.

You are responsible for understanding that blockchain transactions are permanent.

### How We Protect Data

We implement security best practices, including:

* Encrypted HTTPS connections
* Rate limiting
* API authentication controls
* Input sanitization
* Secure backend architecture
* Regular security audits

No system is invulnerable, but we design for resilience.


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