Blockchain Transaction Filtering and Redaction

The patent segments the blockchain data structure into two distinct layers: an immutable layer that preserves the original transaction data for security and integrity, and a mutable redaction layer that stores approval statuses and redaction instructions. This segmentation allows the system to maintain immutability while enabling content moderation through separate redaction data structures that track which transactions should be filtered or removed from public view.

The patent introduces an intermediary content approval system that acts as a mediator between transaction submission and blockchain finalization. This intermediary layer includes content approval procedures, redaction contracts, and filtering mechanisms that inspect transactions before they are fully propagated. The intermediary system allows legitimate transactions to proceed while blocking or redacting malicious content, preventing its propagation to network participants without compromising the underlying blockchain security.

The patent implements preliminary content filtering and approval procedures that occur before transactions are finalized on the blockchain. Content approval smart contracts are deployed in advance and automatically executed when transactions are submitted, performing safety checks and redaction operations proactively. This preliminary action approach detects harmful content early in the transaction lifecycle, preventing it from entering the immutable ledger, while avoiding the need for complex post-hoc analysis of already-committed transactions.