Methods and systems for providing data manifests as a service (DMAAS) are described herein. A first computing system, may generate a first data manifest comprising a first count parameter and a first hash parameter associated with a first data exchange transaction between the first computing system and a second computing system, store the first data manifest to a blockchain data store and transfer a data payload of the first data exchange transaction. The second computing system may analyze the data payload received via the transport mechanism, generate a second data manifest including a second count parameter and a second hash parameter and store the second data manifest to the blockchain data store. A DMAAS computing system facilitates access to the blockchain data store, identifies transmission errors, and triggers acceptance of data at the second computing system upon a successful data exchange transaction.