# Transaction Service The transaction service provides a transaction index for the Bitcoin blockchain. Specifically, it builds and maintains the following information about every transaction on the Bitcoin network: - transaction ids and transactions - input values for every transaction - the timestamp for the block that the transaction appears in - the block height for the block that the transaction appears in This service is generally used to support other services and is not used externally. ## Service Configuration none ## Other services this service Depends on - p2p - db - timestamp - mempool