Patent attributes
Methods and systems for authentication, immutability and trusted timestamping of large audit event logs reported by electronic platforms are disclosed. In an embodiment, a method involves: audit log events aggregation into timeframe aligned data blocks, reporting of data block hashes into blockchain database for authentication, immutability and trusted timestamping. An aspect of the method involves achieving authentication, immutability and trusted timestamping guarantees for audit log events with low computational and networking overhead due to utilization of blockchain database consensus protocol only for batched event data blocks rather than for separate events. Multiple events during specific period of time are grouped into separate data block and cryptographic hash of the whole block is reported to blockchain database to ensure its authentication, immutability and trusted timestamping.