Off-Chain Controller for Indeterministic Transaction Provenance

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Solution Overview

Problem

Distributed ledger networks, such as blockchain, face challenges in handling indeterministic transactions, particularly database queries, which are non-deterministic and unilateral, leading to consensus failures and lack of transparency in transaction records when data is not stored on-chain.

Innovation Solution

A method implemented by nodes in the distributed ledger network to identify and manage indeterministic transactions by sending them to an off-chain controller, updating the ledger status, synchronizing with other controllers, and fulfilling queries through an off-chain source, ensuring complete provenance and preventing consensus failures.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Volume of stationary object

If data is stored off-chain to reduce blockchain storage requirements, then storage capacity is improved, but transaction record authenticity deteriorates due to non-deterministic queries

Engineering Contradiction:

Improvestorage capacityVSAvoidtransaction record authenticity

Core Design Contradiction:

Volume of stationary objectVSReliability

Solution Approach 1:

The patent introduces an off-chain controller as an intermediary component that manages indeterministic transactions. This controller receives transactions, determines their indeterministic nature, and handles them through off-chain sources while maintaining provable linkage to the blockchain ledger, thus resolving the contradiction between storage capacity and record authenticity

Inventive Principle:

Principle #24Intermediary (Mediator)

Solution Approach 2:

The system segments transactions into deterministic and indeterministic categories, handling each type differently. Deterministic transactions are processed normally on-chain, while indeterministic transactions are routed to off-chain controllers. This segmentation allows the system to maintain blockchain integrity for deterministic operations while accommodating off-chain data storage for capacity reasons

Inventive Principle:

Principle #1Segmentation

2Ease of operation

If unilateral off-chain data queries are used, then data accessibility is improved, but transparency deteriorates due to non-deterministic query completion

Engineering Contradiction:

Improvedata accessibilityVSAvoidquery completion transparency

Core Design Contradiction:

Ease of operationVSLoss of information

Solution Approach 1:

The patent implements a feedback mechanism where the off-chain controller receives query results from off-chain sources and feeds them back into the blockchain system through deterministic transactions. This creates a closed-loop system where the completion status of indeterministic queries is recorded on-chain, providing transparency while maintaining off-chain data accessibility

Inventive Principle:

Principle #23Feedback

Solution Approach 2:

The system performs preliminary actions by recording the indeterministic transaction and its identifier on the blockchain before executing the actual off-chain query. This preliminary recording establishes a provable link between the on-chain transaction and off-chain operation, ensuring that query completion information can be traced back to the original transaction

Inventive Principle:

Principle #10Preliminary action

3Device complexity

If indeterministic transactions are processed on-chain, then transaction processing simplicity is improved, but consensus stability deteriorates due to non-deterministic outcomes

Engineering Contradiction:

Improvetransaction processing simplicityVSAvoidconsensus stability

Core Design Contradiction:

Device complexityVSStability of the object's composition

Solution Approach 1:

The patent extracts indeterministic transactions from the main on-chain processing flow and routes them to off-chain controllers. This extraction removes the source of non-determinism from the consensus process, allowing deterministic transactions to maintain consensus stability while indeterministic transactions are handled separately through off-chain sources

Inventive Principle:

Principle #2Taking out (Extraction)

Data Source

PatentUS11431800B2Systems and methods for recording an indeterministic transaction on a distributed ledger network

Publication Date: 2022.08.30 AQILLIZ PTE LTD

AI summary

A computer-implemented method and system of recording an indeterministic transaction on a distributed ledger network is described. The method comprises (a) selecting a transaction from a transaction pool; (b) determining if the transaction comprises a deterministic transaction or an indeterministic transaction, if the transaction comprises the indeterministic transaction, sending the indeterministic transaction to an off-chain controller, marking the indeterministic transaction as a pending indeterministic transaction, attaching an identifier to the pending indeterministic transaction, and proceeding to step (c), if the transaction comprises the deterministic transaction, computing a new state in an update to a ledger, updating a status of a second indeterministic transaction in the off-chain controller if the deterministic transaction comprises a second identifier of the second indeterministic transaction; and proceeding to step (c); (c) determining if a target update time or a maximum update size is reached. Other steps are also described herein.