Blockchain Construction Ledger with Smart Contract Access Control
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Solution Overview
Problem
Construction sites face challenges with security, access control, accountability, and efficiency due to lack of centralized real-time records, unattended deliveries, and inadequate safety measures, leading to issues like theft, delays, and accidents.
Innovation Solution
A site supervisor system utilizing blockchain-based distributed ledgers for secure record-keeping, smart contracts for task management, and biometric identification for access control, combined with wearables for tracking and geofencing, to ensure secure, efficient, and accountable operations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If human supervisors are used to monitor and control access at construction sites, then security and access control can be maintained during working hours, but continuous monitoring is impossible as supervisors are not present 24/7 and data transfer suffers from loss and discontinuity
Solution Approach 1:
The system enables self-service automated monitoring through smart contracts that automatically execute access control decisions, delivery confirmations, and payment releases without requiring continuous human supervisor intervention. The blockchain ledger autonomously records and verifies all transactions and access events.
Solution Approach 2:
The patent replaces the mechanical system of human supervisors with an automated digital system consisting of blockchain ledgers, smart contracts, and electronic verification mechanisms. This substitution eliminates the limitations of human presence and enables continuous automated monitoring and control.
2Productivity
If deliveries are made to unattended construction sites with driver self-verification, then delivery speed is improved, but security and accountability are compromised leading to potential theft and loss
Solution Approach 1:
The blockchain-based smart contract system acts as an intermediary between the delivery driver and the construction site. The smart contract automatically verifies delivery conditions, records the transaction immutably, and releases payment only when verification criteria are met, providing both speed and security without requiring human presence.
3Adaptability or versatility
If multiple stakeholders are allowed to access the construction site simultaneously, then project coordination is improved, but control and accountability become more complex and difficult to maintain
Solution Approach 1:
The system segments access control into distinct smart contracts for different stakeholder types (workers, deliveries, equipment, payments). Each smart contract handles specific access scenarios independently, simplifying the overall system architecture while maintaining the ability to accommodate multiple stakeholders with different access requirements.
4Ease of manufacture
If traditional record-keeping methods are used for construction site activities, then implementation is simple, but records are not maintained on an ongoing basis and are seldom part of a comprehensive record for all current and future stakeholders
Solution Approach 1:
The blockchain-based record-keeping system serves multiple functions simultaneously: it maintains ongoing records of all site activities, provides immutable verification for current stakeholders, and creates a permanent historical record for future stakeholders. The same ledger supports access control, delivery tracking, payment verification, and audit purposes.
Data Source
AI summary
Exemplary embodiments may reference a record of a construction project on a blockchain-based distributed ledger. Materials arriving to the project may be recorded as part of the permanent record. The exemplary embodiments may receive or determine a construction schedule that contains full project details and sequencing, including the specification of dependencies. Smart contracts may be provided that use the blockchain-based distributed ledger for each step or task of the construction schedule. Via smart contract, exemplary embodiments may place and terminate insurance coverage based on the construction schedule and contracts. The exemplary embodiments may build a complete record of plans, the actual “as builts” including make, model, serial number or other identification of for every component in the home resulting from the construction project. The record may include a complete record of who completed the work, who inspected the work and how the project was insured and funded.