---
title: Block Explorers
description: Access block explorers like Subscan and BlockScout to track transactions, analyze contracts, and view on-chain data from smart contracts.
categories:
- Smart Contracts
- Tooling
url: https://docs.polkadot.com/smart-contracts/explorers/
word_count: 286
token_estimate: 478
version_hash: sha256:ff89fc155f78b22f60497faf15b14e12860148289f8d3e8ae98c1071ef41ffc5
last_updated: '2026-06-17T08:07:57+00:00'
---

# Block Explorers

## Introduction

Block explorers serve as comprehensive blockchain analytics platforms that provide access to on-chain data. These web applications function as search engines for blockchain networks, allowing users to query, visualize, and analyze blockchain data in real time through intuitive interfaces.

## Core Functionality

Block explorers provide essential capabilities for interacting with smart contracts on Polkadot Hub:

- **Transaction tracking**: Monitor transaction status, confirmations, fees, and metadata.
- **Address analysis**: View account balances, transaction history, and associated contracts.
- **Block information**: Examine block contents.
- **Smart contract interaction**: Review contract code, verification status, and interaction history.
- **Token tracking**: Monitor ERC-20, ERC-721, and other token standards with transfer history and holder analytics.
- **Network statistics**: Access metrics on transaction volume, gas usage, and other network parameters.

## Available Block Explorers

The following block explorers are available for Polkadot Hub smart contracts, providing specialized tools for monitoring and analyzing contract activity.

### BlockScout

BlockScout is an open-source explorer platform hosted by Parity under the `polkadot.io` domain. It excels at EVM-focused analytics, contract verification without an API key, and provides developers with a full Etherscan-compatible API.

- [Polkadot Hub BlockScout](https://blockscout.polkadot.io/)
- [Polkadot Hub TestNet BlockScout](https://blockscout-testnet.polkadot.io/)
- [Kusama Hub BlockScout](https://blockscout-kusama.polkadot.io/)

![](/images/smart-contracts/explorers/explorers-01.webp)

### Subscan

Subscan is the flagship Polkadot ecosystem block explorer. It is Substrate-native and provides comprehensive support for both Substrate-level data (pallets, extrinsics, events) and EVM transactions and smart contracts, making it well-suited for inspecting both layers simultaneously.

- [Polkadot Hub Subscan](https://assethub-polkadot.subscan.io/)
- [Polkadot Hub TestNet Subscan](https://assethub-paseo.subscan.io/)
- [Kusama Hub Subscan](https://assethub-kusama.subscan.io/)

![](/images/smart-contracts/explorers/explorers-03.webp)