Biometric Contract Messaging With Blockchain Auditability
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Solution Overview
Problem
Current digital contract execution systems face vulnerabilities in security, privacy, and authenticity due to reliance on external identifiers like email addresses and phone numbers, lack of immutable storage, and inadequate end-to-end security, leading to forgery, repudiation, and poor auditability.
Innovation Solution
A system for executing biometrically signed, cryptographically verifiable, blockchain-anchored contracts on a privacy-aware messaging platform, using biometric authentication to secure user identity, encrypt communications, and store records on a tamper-proof blockchain for permanent storage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If email and phone number protocols are used for contract communications, then communication accessibility is improved, but privacy control and security against spam/phishing attacks deteriorate
Solution Approach 1:
The patent introduces a messaging platform as an intermediary that sits between senders and recipients. This platform manages communication addresses, authentication, and message routing while keeping actual contact information hidden. The intermediary handles spam filtering, phishing protection, and selective disclosure of contact details, resolving the contradiction by maintaining accessibility through the platform while protecting privacy through controlled information sharing.
Solution Approach 2:
The patent segments communication into authenticated channels where contact information is selectively revealed. Instead of exposing full contact details upfront, the system segments information disclosure based on authentication status and communication context. This allows broad accessibility for authenticated users while limiting exposure for unauthenticated communications, addressing both accessibility and security requirements.
2Ease of operation
If traditional digital signature systems are used, then contract execution is simplified, but authenticity and non-repudiation deteriorate due to reliance on external identifiers
Solution Approach 1:
The patent replaces traditional mechanical identification systems (email addresses, phone numbers, physical documents) with biometric authentication and cryptographic digital signatures. Biometric data (fingerprint, facial recognition, voice) provides inherent uniqueness and difficulty of replication, while cryptographic signatures provide mathematical proof of authenticity and non-repudiation. This substitution maintains ease of operation through automated verification while dramatically improving reliability through unforgeable biometric and cryptographic binding.
3Adaptability or versatility
If multiple communication channels (email, SMS, instant messaging) are used, then communication versatility is improved, but security and privacy protection deteriorate
Solution Approach 1:
The patent implements a universal messaging platform that handles multiple communication types (text, voice, video, file transfer) through a single integrated system with unified security and privacy controls. Rather than maintaining separate security mechanisms for each channel, the platform provides universal authentication, encryption, and contact management across all communication modes. This achieves communication versatility while maintaining consistent high security standards across all channels.
Data Source
AI summary
A system and method for executing biometrically signed, cryptographically verifiable, blockchain-anchored contracts on a privacy-aware messaging platform is disclosed. The system registers users biometrically and business entities with verified communication addresses. A business-customer account is created by generating a cryptographic key-value pair comprising a customer public key and private key, creating a customer communication address, generating a business-customer communication address hash by applying a hashing algorithm to a combination of the business communication address and customer communication address, and storing a record comprising the hash and customer public key. The system receives a target document, affixes biometric signatures or the signatories, and transmits the document via an encrypted communication channel by extracting communication addresses, generating and comparing the address hashes, encrypting the document using the customer public key upon hash matching, and transmitting it to the signatories. The countersigned document is stored on a blockchain for storage.