[Statescan](https://github.com/opensquare-network/statescan-v2) is an explorer solution for substrate based chains. We have been serving polkadot/kusama and related chains since 2021. Compared to explorers like subscan, it provides a 100% open source and low cost candidate for ecosystem projects.

Besides polkadot system chains, followings chains has adopted statescan as their explores:  Hyperbridge([Nexus](https://nexus.statescan.io/), [gargantua](https://gargantua.statescan.io/)), [Heima(Litentry)](https://heima.statescan.io/), [Invarch](https://invarch.statescan.io/), [Polimec](https://polimec.statescan.io/), [Laos](https://laos.statescan.io/),, [Crust](https://crust.statescan.io/), [Shadow](https://shadow.statescan.io/), [Tangle](https://tangle.statescan.io/), [Tanssi testnet](https://stagelight.statescan.io/), [Argon](https://argon.statescan.io/). There are also projects who deployed statescan by theirselves like [Subsocial](https://explorer.subsocial.network) and [Edgeware](https://edgscan.ink).


## Infrastructure

| Items      | Details                       | per month | Months | Total  |
|--------------|-------------------------------|-----------|--------|--------|
| Servers | 8 servers + 1.3TB volume | €157.12     | 18      | €2828 |
| Domain | 1 io domain |-     | 18      | $89.78 |
| Total |  | -    | 18      | $3051 |


## Maintenance

The maintenance work mainly includes:

- Server deployment maintenance: daily server monitor, upgrading products versions, emergency handling, etc.
- Codebase maintenance: code refactor, bug fixes, UI tweaks, dependency upgrading, etc.

Please check the [changelog](https://github.com/opensquare-network/statescan-v2/blob/main/CHANGELOG.md) and [commits](https://github.com/opensquare-network/statescan-v2/commits/main/) for more details. We will request 5 FTE days equivalent work per month.

## Common features development

| Item        | Workload            | Cost   |
|-------------|-------------------|--------|
| Support EVM transactions indexing and fronted page, check [issue #974](https://github.com/opensquare-network/statescan-v2/issues/974) | 1 FTE * 1 week, 40 hrs | $3,200 |
| More system chains support, check [issue #987](https://github.com/opensquare-network/statescan-v2/issues/987) | 1 FTE * 1 week, 40 hrs | $3,200 |
| Total | 80 hrs | $6,400 |

## Total cost

| Item        | Workload            | Cost   |
|-------------|-------------------|--------|
| Infrastructures | servers and domains | $3051 |
| Maintenance | Code refactor, UI tweaks and polish, bug fixes, etc; | 57,600 |
| Common features development | Please check the development section | $6,400 |
| Total | - | 67,051 |

Propose and approve a spend of treasury funds.

## Dispatch Origin

Must be [`Config::SpendOrigin`] with the `Success` value being at least
`amount` of `asset_kind` in the native asset. The amount of `asset_kind` is converted
for assertion using the [`Config::BalanceConverter`].

## Details

Create an approved spend for transferring a specific `amount` of `asset_kind` to a
designated beneficiary. The spend must be claimed using the `payout` dispatchable within
the [`Config::PayoutPeriod`].

### Parameters
- `asset_kind`: An indicator of the specific asset class to be spent.
- `amount`: The amount to be transferred from the treasury to the `beneficiary`.
- `beneficiary`: The beneficiary of the spend.
- `valid_from`: The block number from which the spend can be claimed. It can refer to
  the past if the resulting spend has not yet expired according to the
  [`Config::PayoutPeriod`]. If `None`, the spend can be claimed immediately after
  approval.

## Events

Emits [`Event::AssetSpendApproved`] if successful.

- **Problem Statement:** Providing an open-source and cost-effective explorer solution for substrate-based chains like Polkadot and Kusama.
- **Significance:** Statescan offers a budget-friendly alternative to other explorers like subscan, catering to ecosystem projects.
- **Proposed Solution:** Utilizing Statescan as an explorer for various chains and implementing common features development such as EVM transaction support and expanding system chains support.
- **Expected Outcomes:** Enhanced infrastructure, regular maintenance, and additional features development at a total cost of $67,051.

#1455 Statescan maintenance proposal from 2023.10 to 2025.03

No Active Proposals