Vartovii Sentinel-8004

`Vartovii Sentinel-8004` is a trust and control layer for autonomous trading agents. Instead of building another trading bot, we focused on the checkpoint that should exist before capital moves. Each trade starts as a canonical `TradeIntent`. Sentinel evaluates that intent against deterministic risk policy and returns one of three machine-readable outcomes: `ALLOW`, `DENY`, or `ALLOW_WITH_DOWNSIZE`. Every decision produces a signed verdict, validation artifact, permit verification result, and Kraken-shaped execution preview so judges can inspect the full proof chain end to end. The public repo implements real EIP-712 typed-data signing and verification, ERC-8004-style identity binding, organizer-aligned shared Sepolia contract configuration, and a hosted judge-first walkthrough with four canonical scenarios. The main demo surface is intentionally narrow: judges can open `/judge` for the proof story or `/operator` for a dry-run pipeline without needing private infrastructure, exchange credentials, or hidden services. This is the primary judged product surface. A separate founder-run companion repository exists only as supporting proof that the guardrail also matters in a live-market loop. As of April 8, 2026, that founder-run companion log contains 130 recorded cycles, including 83 approved shared-Sepolia RiskRouter actions. The public submission does not depend on that companion surface to run. Sentinel-8004 fits the hackathon thesis because it combines AI-agent execution intent, cryptographic verification, risk controls, and transparent auditability into one reusable control layer. The long-term product path is a deployable guardrail module or micro-SaaS for autonomous trading systems, treasury agents, and policy-constrained execution workflows.