Hardware Security Module for Deterministic Transaction Ordering in Distributed Ledgers
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Solution Overview
Problem
Current distributed ledger protocols lack deterministic transaction ordering and intra-block fairness, constraining their applicability in financial services due to the decentralized nature and inability to ensure consistent, reliable sequencing across multiple participants, which is critical for banking and market operations.
Innovation Solution
Implementing a hardware security module in a distributed ledger network to receive and enforce arbitrary ordering logic agreed upon by nodes, ensuring deterministic transaction ordering within blocks, and committing these ordered transactions as blocks to the ledger using a consensus algorithm.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If distributed ledger protocols use decentralized transaction ordering, then the system maintains distributed and decentralized nature, but deterministic transaction ordering within blocks cannot be ensured
Solution Approach 1:
The patent segments the ordering function by introducing a designated node (or committee of nodes) responsible for determining transaction order within blocks, while other nodes continue to validate and propagate transactions. This segmentation allows the system to maintain decentralization at the network level while achieving deterministic ordering at the block level through the specialized role of the designated node.
Solution Approach 2:
The patent introduces an intermediary mechanism in the form of a designated node or ordering committee that acts as a mediator between transaction submitters and the consensus process. This intermediary deterministically orders transactions before they enter the consensus protocol, ensuring reliable sequencing without requiring all nodes to perform ordering functions, thus preserving decentralization while achieving determinism.
2Measurement precision
If high precision timestamps are used for transaction sequencing, then transaction order can be determined, but inconsistent and unpredictable network propagation delays cause unfairness and manipulation opportunities
Solution Approach 1:
The patent applies preliminary action by having the designated node determine the transaction order within a block before the consensus process begins. This pre-ordering ensures that all subsequent nodes receive and process transactions in the same deterministic sequence, eliminating fairness issues that arise from network propagation delays affecting timestamp-based ordering.
Solution Approach 2:
The patent effectively copies the deterministically ordered transaction sequence from the designated node to all other nodes in the network. Each node receives the same ordered transaction list from the block, ensuring consistent reproduction of the transaction sequence across the distributed network, thereby achieving fairness without relying on precision timestamps that are vulnerable to propagation delays.
3Reliability
If arbitrary ordering logic is enforced by a single node, then deterministic ordering is achieved, but the system complexity and trust requirements increase
Solution Approach 1:
The patent makes the ordering logic universal by requiring all nodes to implement and execute the same arbitrary ordering logic that the designated node uses. This multi-functionality approach allows any node to potentially serve as the ordering node while maintaining consistency, reducing system complexity compared to having a single trusted node, as the logic itself becomes the trusted mechanism rather than a specific entity.
Solution Approach 2:
The patent incorporates feedback mechanisms where nodes verify that the ordering logic is correctly applied and that blocks conform to the agreed-upon ordering rules. This feedback loop ensures deterministic ordering is maintained while allowing the system to detect and reject deviations, thereby managing trust through verification rather than requiring complex centralized control structures.
Data Source
AI summary
Systems and methods for deterministic ordering and enforcing intra-block fairness in distributed ledger implementations are disclosed. According to one embodiment, a method for deterministic ordering and enforcing intra-block fairness in distributed ledger implementations may include: (1) receiving, at a hardware security module at one of a plurality of nodes in a distributed ledger network, arbitrary ordering logic based on a definition of fairness agreed to by the plurality of nodes; (2) receiving, by the hardware security module, a plurality of transactions for execution; (3) ordering, by the hardware security module, the plurality of transactions based on the arbitrary ordering logic; and (4) outputting, by the hardware security module, the plurality of transactions as an ordered set of transactions; wherein a consensus algorithm executed by the distributed ledger network commits the ordered set of transactions to the distributed ledger as a block.