Akash P S

A decentralized P2P smart parking marketplace for smart cities. Hosts monetize private spaces with geospatial search (Leaflet.js + Google Maps API), instant or approval-based booking modes, and real-time P2P driver-host messaging. Integrated Razorpay payment gateway (UPI/Cards), JWT-secured authentication, peer reviews & ratings, vehicle type filtering (2W/4W/EV), and an admin moderation dashboard with real-time analytics.

Blockchain-powered academic credential verification combating global certificate fraud. Commits SHA-256 document digests to an Ethereum smart contract (CertificateRegistry.sol) with on-chain RBAC (onlySuperAdmin / onlyAdmin modifiers). Features two-stage tamper detection (metadata + byte-level SHA-256 cryptographic diff), event-driven state synchronization via JSON-RPC filters, and a dual-persona auth flow — MetaMask for issuers, Google OAuth for students — enabling zero-friction verification without gas fees.

Full-stack blockchain creature battle game on the Sui network with Sui Move smart contracts governing NFT minting, leveling (1–50), and trustless PvP wagers. Anti-exploit architecture includes double-blind Blake2b commit-reveal to prevent front-running, HMAC-SHA256 signed API requests (rejected if unsigned or >30s expired), on-chain escrow wagers with 3-minute timeout claims, wallet-level rate limiting, and AES-GCM encrypted client-side integrity checks. Renders 200-frame cinematic scroll animations, 3D WebGL slug models, and procedurally synthesized zero-asset audio.

Programmable bilateral deal desk for autonomous AI buyer agents (built for the Razorpay Agentic Commerce Hackathon). Features a universal protocol adapter layer normalizing ACP, AP2, UCP, and x402 payloads into a Common Commerce Object (CCO), 4-round bounded agent-to-agent negotiation with deadline-aware urgency posture, reliability-weighted 3-merchant competitive auction with trust-floor exclusion, HMAC-SHA256 cryptographic contract signing with single-use nonces, and atomic Razorpay settlement with webhook HMAC validation.

AI-driven NGO platform (Team ScriptKiddos) preserving academic continuity for migrant children. Uses Claude 3 AI to cross-reference origin vs. current educational boards, calculate migration penalty decay, and generate personalized 3-week day-by-day Bridge Plans. Implements a consent-first NOC OTP protocol with 30-minute token sessions for data privacy, offline-resilient PWA with Service Worker caching for field workers in harsh network environments, and a persistent academic timeline that evolves AI recommendations with each new assessment entry.