Blockchair

Blockchair makes public activity on multiple networks verifiable through records for blockchain data API, historical transaction datasets, and privacy-focused transaction analysis. Its indexing also connects transaction fee statistics with raw block data access and blockchain node data, which helps reconstruct a transaction, contract interaction, or validator event. Investigations using Blockchair belong here when evidence from blockchain data API or historical transaction datasets is essential and the explorer's handling of privacy-focused transaction analysis affects the conclusion. Protocol changes to the indexed networks need the network entry unless explorer behavior is affected; wallet clustering and entity attribution remain analytics topics rather than functions of Blockchair.