Etherscan¶

Overview¶

Etherscan is the official block explorer and analytics platform for the Ethereum blockchain, created by the Etherscan.io team in 2015. As the most well-known and widely used block explorer in the Ethereum ecosystem, Etherscan provides on-chain data querying, tracking, and analytics services to millions of users worldwide.

Etherscan is not just a simple block explorer but a piece of Ethereum ecosystem infrastructure. It offers rich functionality including transaction queries, smart contract verification, token tracking, Gas tracker, DApp directory, and more. Nearly every Ethereum user relies on Etherscan to check transaction status, verify contract code, and view wallet balances. Etherscan has become an important guarantor of Ethereum's transparency and trustworthiness.

Core Features¶

Blockchain Data Queries¶

Etherscan provides comprehensive Ethereum on-chain data querying: - Transaction Queries: Enter a transaction hash to view transaction details, status, Gas fees, event logs - Block Queries: View block information, included transaction lists, miners/validators - Address Queries: Address balances, ETH and token transaction history, contract code - Token Tracking: ERC20, ERC721, ERC1155 token transfer records and holders - Batch Queries: Support for batch querying multiple addresses or transactions

Smart Contract Verification¶

Etherscan is the authoritative platform for smart contract verification: - Source Code Verification: Developers can upload contract source code for verification - Code Viewing: Verified contracts can be viewed directly on Etherscan - Contract Interaction: Directly call contract read/write methods through the web interface - Proxy Contract Detection: Automatically identifies proxy contract patterns and displays implementation contracts - Security Audit Information: Displays whether contracts have been audited

Contract verification greatly enhances transparency, allowing users to verify whether contracts match project claims.

Gas Tracker¶

Real-time Gas price monitoring tool: - Real-Time Gas Prices: Low, Average, and High Gas price suggestions - Gas Price History: Historical Gas price trend charts - Gas Consumption Rankings: Displays contracts and transactions consuming the most Gas - Gas Estimation Tool: Estimates Gas costs for different transaction types

The Gas tracker helps users choose optimal transaction timing to save on Gas fees.

Token and NFT Tracking¶

Token Information: Token total supply, holder count, price, trading volume
Token Holder Rankings: Token rich list
NFT Tracking: NFT metadata, transaction history, holder information
Token Approval Management: View and revoke token approvals

DApp and Project Directory¶

DApp Directory: Curates popular DApps, categorized by type (DeFi, DEX, Gaming, etc.)
Project Information: Official links, social media, contract addresses for projects
Verification Badges: Adds verification badges for official contracts to prevent phishing

Account Features¶

Advanced features available after registration: - Address Monitoring: Monitor transaction activity for specific addresses - Transaction Notes: Add private notes to your transactions - API Keys: Obtain API access keys - Custom Settings: Personalized interface settings

Etherscan API¶

Powerful API services for developers: - Free Tier: Free API access at 5 requests per second - Account API: Query address balances, transaction history - Contract API: Get contract ABI, source code - Transaction API: Query transaction status and receipts - Block API: Get block data - Event Log API: Query contract events - Gas Tracker API: Get Gas price data - Token API: Token balance and transfer queries

Platform Highlights¶

Authority and Trustworthiness: As the earliest and most well-known block explorer in the Ethereum ecosystem, Etherscan has become the de facto authoritative source for Ethereum data. Project teams verify contracts on Etherscan to gain credibility.

Data Completeness: Indexes all Ethereum data from the genesis block to the present, providing complete historical data query capabilities. Data is accurate and reliable, serving as an important evidence source for legal and audit scenarios.

User Experience: After years of iteration, Etherscan features an intuitive and user-friendly interface. Even non-technical users can easily navigate it.

Feature-Rich: Continuously launches new features such as NFT tracking, token approval management, and contract interaction interfaces to meet diverse user needs.

API Ecosystem: Etherscan API is used by thousands of projects and tools, making it a key component of Web3 infrastructure.

Multi-Network Support: In addition to the Ethereum mainnet, the Etherscan team also operates testnet explorers (Goerli, Sepolia) and compatible chain explorers (BSCScan, PolygonScan, Arbiscan, etc.).

Community Trust: After 8+ years of operation, Etherscan has earned widespread trust from the Ethereum community, serving as indispensable ecosystem infrastructure.

History¶

2015: Etherscan officially launched, providing block explorer services for Ethereum.

2016-2017: As the Ethereum ecosystem grew, Etherscan added token tracking, contract verification, and other features, becoming an essential tool for Ethereum users.

2018-2019: Launched API services for developers. Expanded features including Gas tracker, DApp directory, and more.

2020-2021: With the DeFi and NFT explosion, Etherscan added related tracking and analytics features. Launched the token approval management tool to help users protect asset security.

2022: Supported the Ethereum Merge, adapting to the PoS consensus mechanism. Launched more user-facing security features.

2023: Continued optimizing user experience and launched new data analytics tools. The team expanded to other EVM chains, operating explorers for multiple chains.

2024-Present: As core Ethereum ecosystem infrastructure, Etherscan continues to innovate and provide better services.

Use Cases¶

Regular Users: Check transaction status, view wallet balances, monitor transfer records.

Developers: Debug smart contracts, view event logs, verify contract code, integrate APIs.

Investors: Track whale addresses, view token holder distributions, monitor project team fund movements.

Security Research: Analyze hack attacks, trace stolen funds, identify phishing contracts.

Audit and Compliance: Provide on-chain data proof, generate transaction reports, tax calculations.

Project Teams: Verify official contracts, demonstrate project transparency, communicate with the community.

Media and Research: Obtain accurate on-chain data for reporting and research.

Education: Learn how Ethereum works, understand smart contract execution processes.

Official Website: https://etherscan.io
API Documentation: https://docs.etherscan.io
Goerli Testnet: https://goerli.etherscan.io
Sepolia Testnet: https://sepolia.etherscan.io
Gas Tracker: https://etherscan.io/gastracker
Twitter: https://twitter.com/etherscan
Blog: https://etherscan.io/blog