Definition ∞ An on-chain data query is a request to retrieve specific information directly from a blockchain’s public ledger. This process involves extracting verifiable transaction details, smart contract states, or other publicly recorded information directly from a blockchain network. Unlike off-chain data, on-chain data is immutable and transparent, providing a definitive record of events and asset movements. Queries can be executed using blockchain explorers, specialized APIs, or by directly interacting with network nodes.
Context ∞ On-chain data queries are fundamental for analysts, researchers, and participants seeking to understand the underlying activity and health of digital asset networks. News often references insights derived from on-chain data, such as changes in whale holdings, exchange balances, or network usage, to explain market sentiment or predict future price movements. The transparency of blockchain data offers unique analytical capabilities for the crypto ecosystem.