Cryptographic Transaction Integrity Verification System

Create a comprehensive cryptographic verification system for financial transactions that ensures end-to-end integrity, non-repudiation, and auditability. Develop a multi-layer encryption mechanism that supports multiple signature schemes, including threshold signatures and multi-party computation. The system must generate immutable transaction logs with cryptographic proofs, support retroactive verification, and maintain performance under high-throughput scenarios (minimum 10,000 transactions per second).