System architecture
Arc USDC Rebalancer
How the treasury decision engine, agent, policy, execution rail, authorization guard, and deployment evidence fit together.
Verified Arc Testnet demo
Report first
Execution disabled in public deployment
Auditable controls
Built as a verifiable treasury control system
The site proves a report-first treasury decision flow on Arc Testnet. The public deployment reads live policy, balance, validation, and Circle readiness, but does not submit treasury transactions. Its write boundary remains visibly fail-closed.
Homepage
https://web-eight-chi-99.vercel.app
Open
Dashboard
https://web-eight-chi-99.vercel.app/dashboard
Open
Final demo
https://web-eight-chi-99.vercel.app/demo
Open
System architecture
https://web-eight-chi-99.vercel.app/architecture
Open
Treasury operations brief
https://web-eight-chi-99.vercel.app/operator
Open
Case study
https://web-eight-chi-99.vercel.app/case-study
Open
Release notes
https://web-eight-chi-99.vercel.app/notes
Open
GitHub repo
sin199/arc-usdc-rebalancer
Open
What the system includes
The product surface stays short; this page explains the system behind it.
A public Arc Testnet treasury demo with a report-first readiness checker.
A compact treasury operations brief that explains the policy workflow used in the project.
A live-execution boundary that is hard-disabled in the public deployment.
A fail-closed authorization design retained for code review but unreachable from the public UI.
Why it matters for Arc
The architecture should be understandable from product action to onchain effect.
It turns the treasury flow into something a reviewer can inspect in one pass.
It separates review artifacts from treasury writes instead of mixing the two together.
It keeps the Arc Testnet policy, identity evidence, executor, and report trail visible in the same build.
It turns architecture decisions into inspectable code, deployment evidence, and testable safety controls.
Arc surfaces used
These are the same live surfaces exposed by the product.
Arc Testnet chain state
TreasuryPolicy live reads
TreasuryExecutor address and USDC balance reads
Arc agent identity and validation status
Circle developer-controlled wallet and Gateway readiness
Public demo mode and report-first action pack
Visitor and review flow
Public review stays useful without a wallet. Treasury writes remain unavailable.
Public visitor flow
• Open the homepage and read the 30-second visitor path.
• Open the dashboard without a wallet and generate a readiness report.
• Copy the markdown report or action pack from preview mode.
• Compare the At target, Below minimum, and Above target scenarios.
Operator review flow
• Open the public dashboard without a wallet.
• Load the live policy snapshot and inspect the execution boundary.
• Keep Circle wallet-set readiness visible as a dependency signal.
• The submitted public deployment keeps all treasury writes disabled.
Current onchain proof status
Not yet published
The public demo proves the report-first readiness flow and the locked execution boundary. No top_up or trim Arc Testnet tx hash is published yet, and no gates were bypassed.
Report-first output is visible without a wallet.
Action pack templates are visible while live execution stays locked.
The submitted public deployment does not expose a treasury write path.
Circle readiness is shown as a dependency signal, not proof of custody or transfer.
Safety boundaries
These are the guardrails the public demo keeps visible.
Do not paste real private keys into the browser.
The site does not collect private keys.
No silent transactions are sent from preview mode.
The submitted public deployment does not send treasury transactions.
The demo is report-first, read-only, and not a profit bot.
Deployment evidence
The reviewer can validate the live deployment and its evidence boundary without leaving this page.
Production URL
https://web-eight-chi-99.vercel.app
Latest deployment URL
https://web-5p01r40bm-sin199s-projects.vercel.app
Deployment ID
dpl_Y8vUczV3r7ifJ27tJKSp5Kzj14V8
Deployment commit
4e69cd3b8460e26ca842701517cf01ca710db818
Branch main
Arc Testnet chain ID
5042002
Agent proof
#4507 / kyc_verified
Arc Testnet-linked identity
Arcscan links
Address pages for the contracts and agent registries used by the demo.
TreasuryPolicy
0x4bFa1e67B1163B452d39f27F799B0A7D28F545f6
TreasuryExecutor
0x5c5d0275371724779f3a6928eb0312df2b1a501f
USDC token
0x3600000000000000000000000000000000000000
Agent identity registry
4507 / kyc_verified
Agent reputation registry
0x8004B663056A597Dffe9eCcC1965A193B7388713
Agent validation registry
0x8004Cb1BF31DAf7788923b405b754f57acEB4272
Screenshot checklist
Use these when capturing the public demo for Arc review or social sharing.
Homepage hero with the 30-second visitor path.
Dashboard at target / hold.
Dashboard below minimum / top_up.
Dashboard above target / trim.
Dashboard execution locked state.
Suggested Arc House post
Ready to paste, with the proof framing kept short and plain.
Title
Arc USDC Rebalancer: report-first treasury operations on Arc Testnet
Body
Arc USDC Rebalancer is a public DeFi Treasury decision MVP on Arc Testnet: a readiness checker + treasury operations brief + auditable action pack. Visitors can open the dashboard without a wallet, generate a readiness report, compare treasury scenarios, and copy a markdown report or action pack. The public deployment is non-executing and reports its write boundary explicitly. What it uses: - Arc Testnet - USDC treasury policy - TreasuryPolicy contract - TreasuryExecutor contract - Arc-linked onchain identity evidence and treasury operations brief - Circle developer-controlled wallet and Gateway readiness as live dependency signals - No public treasury write; exported receipts remain not published What it demonstrates: - report-first treasury operations - clear report-versus-write boundaries - no silent transactions - no public treasury execution path - stablecoin treasury actions that can be inspected before execution Demo: https://web-eight-chi-99.vercel.app/dashboard Repo: https://github.com/sin199/arc-usdc-rebalancer
Short social post
Short enough to paste into X without extra editing.
@Arc @samconnerone Shipped a public Arc Testnet DeFi Track treasury decision MVP: report-first readiness reports, a treasury operations brief, USDC policy decisions, and Circle Wallets/Gateway readiness signals. The public deployment sends no treasury transaction. Demo: https://web-eight-chi-99.vercel.app/dashboard