Ethereum Data Query and Analysis Tools: Etherscan and ETHERQL

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Introduction to Etherscan

Etherscan is a leading block explorer and analytics platform for the Ethereum blockchain, enabling users to track transactions, verify smart contracts, and analyze on-chain data with transparency.

Core Features of Etherscan

  1. Transaction Tracking (Under "BLOCKCHAIN" tab):

    • Search by transaction hash, address, or block number.
    • View gas fees, status (pending/confirmed), and contract interactions.

  2. Block Exploration:

    • Inspect block details (timestamp, miner, gas used).
    • Monitor uncle blocks and rewards.

  3. Account Profiling (Under "ACCOUNT" tab):

    • Check ETH/token balances.
    • Analyze transaction history.

  4. Token Analytics (Under "TOKEN" tab):

    • Track ERC-20/ERC-721 token transfers.
    • Verify token contracts and holders.

Advanced Tools

  1. Data Visualization (Under "CHARTS" tab):

    • Network Metrics: Hash rate, difficulty, pending transactions.
    • Economic Insights: ETH price history, supply growth, gas fee trends.
    • Blockchain Health: Avg. block time, gas limits, daily gas consumption.

  2. Mining Calculator (Under "MISC" tab):

    • Estimate profitability based on hash rate and electricity costs.

  3. Testnet Support:

    • Explore Ropsten, Kovan, and Rinkeby test networks for development.

👉 Master Ethereum analytics with Etherscan

ETHERQL: Querying Ethereum with SQL

ETHERQL bridges blockchain data with SQL queries, offering structured access to Ethereum’s decentralized ledger.

Key Components

  1. Synchronization Manager:

    • Streams real-time blockchain data to a queryable database.

  2. Handler Chain:

    • Processes blocks and transactions through modular pipelines.

  3. Persistence Framework:

    • Stores indexed data for low-latency queries.

  4. Developer API:

    • Supports custom SQL queries (e.g., SELECT * FROM transactions WHERE value > 1 ETH).

  5. Implementation:

    • Optimized for scalability, handling high-throughput chains like Ethereum.

👉 Explore ETHERQL’s SQL capabilities

FAQ

Q1: How does Etherscan verify smart contracts?
A: Etherscan compiles contract bytecode and matches it against deployed addresses, displaying verified source code for transparency.

Q2: Can ETHERQL query historical gas prices?
A: Yes! Use SQL like SELECT AVG(gas_price) FROM blocks WHERE timestamp > '2024-01-01'.

Q3: Is Etherscan free to use?
A: Absolutely—no account required for browsing, but API calls have rate limits.

Q4: What’s the difference between Etherscan and Etherchain?
A: Etherscan offers richer analytics and token support, while Etherchain focuses on raw blockchain data.

Q5: How often does ETHERQL sync with Ethereum?
A: Near real-time, with sub-10-second delays for new blocks.