Skip to main content
Exchanges need on-chain data to detect deposits, track withdrawals, and reconcile balances. RPC provides queries for specific blocks, accounts, and transactions; indexers process blockchain data continuously and make it searchable across accounts and blocks.

​
RPC Queries

Use RPC to query native NEAR balances with view_account, token balances through ft_balance_of, and transaction execution through status queries. For reconciliation, query balances at the same finalized block. Access to older blocks and state depends on the provider’s retained history. Resources:

​
Indexers

An indexer processes blocks, receipts, execution outcomes, and contract events, and can store relevant movements in a database. For an exchange, this supports continuous deposit monitoring and queries across many blocks, such as all transfers into a customer’s account. Process finalized outcomes across all shards, including receipts generated by contract calls. Save a processing checkpoint so monitoring can resume after an interruption, and deduplicate movements when replaying data. For fungible tokens, identify transfers using events emitted by the supported token contract. Resources:

​
Hosted Data APIs

Hosted APIs expose indexed data through HTTP endpoints, allowing an integration to query account assets and history without running its own indexing infrastructure. Check the selected API’s network coverage, indexing delay, pagination, and how far back its data extends. Before crediting a deposit, establish finality and successful receipt execution; see Receiving Deposits. Use a finalized block checkpoint when reconciling balances. For additional examples, see Data APIs.