# Reproducing the Snapshot

Auditing the Snapshot is simply reproducing a snapshot directly from blockchain data and comparing it with the officially published snapshot data.

### Getting the Registration Deadline slot number

Getting the `slot_no` aligned with the registration deadline.

Query the dbSync database with:

```sql
select slot_no, time from block 
    where slot_no is not null and time <= '2025-09-11 21:45:00'
    order by slot_no desc limit 1 ;
```

The result will be:&#x20;

```
166060796|2025-09-11 21:44:57
```

Therefore the `slot#` that the snapshot needs to target is: 166060796

### Running the Raw snapshot

The first part of the snapshot accumulates raw registration and staked ada information and validates it according to [CIP-15 ](https://cips.cardano.org/cips/cip15/)and [CIP-36](https://cips.cardano.org/cips/cip36/). &#x20;

*Note: Multiple delegations, as specified by CIP-36, are not supported.  These will be detected as invalid registrations.  Only registrations that contain a single voting key are supported and valid.*

Run (replace your credentials as appropriate):&#x20;

```sh
export USERNAME=<Your dbSync postgresql Username>
export PASSWORD=<Your dbSync postgresql Password>
export DBSYNC_POSTGRES="localhost:5432"
./target/release/snapshot_tool --db cexplorer --db-user $USERNAME --db-pass $password --db-host $DBSYNC_POSTGRES --out-file ./cexplorer-166060796.json --min-slot 0 --max-slot 166060796 --network-id mainnet
```

This will produce three files:

* `cexplorer-166060796.json` <- Raw Snapshot Data
* `cexplorer-166060796.unregistered.json` <- Unregistered but staked ADA.
* `cexplorer-166060796.errors.json` <- Errors or Obsolete registrations.

### Processing the snapshot with Fund14 parameters

This filters registrations for minimum allowed voting power:

Run:

{% code fullWidth="false" %}

```sh
./target/release/catalyst-toolbox snapshot --snapshot cexplorer-166060796.json --min-stake-threshold 25000000 --slot-no 166060796 cexplorer-166060796.final.json
```

{% endcode %}

This produces the final snapshot: cexplorer-166060796.summary.json

## Official Snapshot Artifacts

As soon as the official snapshot artifacts that will be used for Fund14 are available, they will be linked [here](https://drive.google.com/drive/folders/1G2miIukxh9Lv1OQve1CHwOfLRxZlmU1O?usp=sharing).

It is possible to run the snapshot independently until they are published.