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

# V5.1.0: 2/13/23

> Release notes for Blockscout version 5.1.0 (February 13, 2023).

<Info>
  All backend release notes are now available on github at [https://github.com/blockscout/blockscout/releases](https://github.com/blockscout/blockscout/releases)
</Info>

## Highlights

Improvements to the smart contract verifier service and additions the v2 API increase speed and usability

## New Features List

* [#6871](https://github.com/blockscout/blockscout/pull/6871) - Integrate new smart contract verifier version

* [#6838](https://github.com/blockscout/blockscout/pull/6838) - Disable dark mode env var

* [#6843](https://github.com/blockscout/blockscout/pull/6843) - Add env variable to hide Add to MM button

* [#6744](https://github.com/blockscout/blockscout/pull/6744) - API v2: smart contracts verification

* [#6763](https://github.com/blockscout/blockscout/pull/6763) - Permanent UI dark mode

* [#6721](https://github.com/blockscout/blockscout/pull/6721) - Implement fetching internal transactions from callTracer

* [#6541](https://github.com/blockscout/blockscout/pull/6541) - Integrate sig provider

* [#6712](https://github.com/blockscout/blockscout/pull/6712), [#6798](https://github.com/blockscout/blockscout/pull/6798) - API v2 update

* [#6582](https://github.com/blockscout/blockscout/pull/6582) - Transaction actions indexer

* [#6863](https://github.com/blockscout/blockscout/pull/6863) - Move OnDemand fetchers from indexer supervisor