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

# Infrastructure

> What runs on the chain and what runs around it.

## What it is

Rules and money live in the programs on the chain. The services around them read the chain or run routine steps.

| Part | What it does |
| - | - |
| **Programs** | They hold the rules, the vaults and the locks. |
| **Indexer and API** | They read the chain so pages load fast. If they are wrong, the chain still decides, and Verify shows the mismatch. |
| **Crank** | It runs routine steps, such as collecting fees, splitting them and publishing rewards. It cannot change the rules. |
| **Site** | It builds transactions for you to review. Your wallet signs them, and the site never holds your keys. |
| **Uploads** | Images and metadata are checked and stored on Pari's servers. |

## When to use it

Read this to see what you have to trust and what you can check.

## Step by step

**1. Find the part you care about**

Use the table above.

**2. Check it on Verify**

[Verify](https://pariprotocol.xyz/verify) shows the programs, the admin, the splits, declared wallets and pauses.

## What can go wrong

> [accordion] The API is wrong or down
>
> The chain still decides. Verify compares the two, and a mismatch shows as a failure.

> [accordion] The crank holds collected fees
>
> Its wallet holds collected fees until each split lands, and the [Verify](https://pariprotocol.xyz/verify) page shows that balance. The program counts what the bot records against what it collected. It does not send the shares itself.

## Next

> [card] [Verify it yourself](https://docs.pariprotocol.xyz/security/verify.md)
>
> Check the rules against the chain.

> [card] [Contract addresses](https://docs.pariprotocol.xyz/security/contract-addresses.md)
>
> Every program and protocol account.


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