Deployment

How the pieces reach the public internet. Full step-by-step runbooks live in the main repository — TESTNET.md (contracts + Hub) and PRODUCTION.md (Cloudflare go-live) — this page is the map.

Target topology

URL	What	Where
https://<domain>	Landing (landingpageObulus/)	Cloudflare Pages
https://app.<domain>	Cockpit (AppObulus/)	Cloudflare Pages
https://gitbook.<domain>	This site (gitbook/)	Cloudflare Pages
https://api.<domain>	Hub (Fastify)	VPS · nginx · Cloudflare proxy

The fronts — one Pages project per folder

Each static site is its own git-connected Cloudflare Pages project with a build watch path, so a push only redeploys the folder it touched:

Setting	landing	app	docs
Root directory	landingpageObulus	AppObulus	gitbook
Build	npm ci && npm run build	idem	idem
Output	dist	dist	dist
Watch path	landingpageObulus/*	AppObulus/*	gitbook/*

The app reads its chain identity at build time (VITE_API_URL, VITE_CHAIN_ID, VITE_ESCROW_ADDRESS, VITE_USDG_ADDRESS, VITE_RPC_URL); a malformed or missing value renders a clear configuration-error screen, never a blank page. The landing's CTAs are env-driven (VITE_APP_URL, VITE_DOCS_URL, VITE_SECURITY_URL).

The contract — deliberate, guarded, verified

forge script script/DeployRobinhoodTestnet.s.sol --rpc-url robinhood_testnet --broadcast \
  --verify --verifier blockscout --verifier-url https://explorer.testnet.chain.robinhood.com/api

• Robinhood Chain is an Arbitrum (Nitro) L2 with gas in ETH. Testnet: chain 46630, RPC https://rpc.testnet.chain.robinhood.com, explorer https://explorer.testnet.chain.robinhood.com, ETH faucet https://faucet.testnet.chain.robinhood.com. Mainnet: chain 4663, RPC https://rpc.mainnet.chain.robinhood.com, explorer https://robinhoodchain.blockscout.com.
• Network guards: require(block.chainid == 46630) (testnet) / 4663 (mainnet — expects a hardware/multisig owner + treasury).
• The settlement token comes from the environment: USDG_ADDRESS points at an existing token, or USE_MOCK_USDC=true deploys a freely-mintable MockUSDC (testnet bot liquidity). On mainnet (4663) the script refuses the mock fallback — USDG_ADDRESS is mandatory.
• The script writes contracts/deployments/<chainId>.json; scripts/testnet-env.mts then fans the addresses out to the Hub (deployments.json) and the cockpit (AppObulus/.env.local) — no manual copying, no drift.
• Contracts are immutable: a bad parameter means a new address, never a migration.

The Hub — VPS, systemd, origin-locked nginx

• Unit obulus-hub (agents/deploy/obulus-hub.service): non-root user, Restart=on-failure, NoNewPrivileges, reads /opt/obulus/backend/.env.
• Chain mode requires ARBITER_ADDRESS + TREASURY_ADDRESS (boot refuses demo fallbacks on a real chain) and flips STRICT_SIGNATURES=true.
• Behind the proxy: TRUST_PROXY=1 so the per-IP rate limit keys on the real client IP; CORS_ORIGIN lists the exact front origins.
• nginx (agents/deploy/nginx/): Cloudflare origin certificate, per-IP limit_req, real-IP restoration from CF-Connecting-IP, and a $cf_edge gate that 403s any direct-to-origin connection that didn't come through Cloudflare — plus HSTS and nosniff.
• Health: curl https://api.<domain>/health → "mode":"onchain".

The arena bots (optional but great)

arena-agents.service runs the seller/buyer/arbiter bots against the deployed contract — a continuous public proof that the full lifecycle works. Keys are generated on the server (npm run keygen -w agents, chmod 600) and are never the well-known dev keys: the bots refuse those on any non-local RPC.

CI is the gate

Every push runs four parallel jobs — backend/SDK/agents tests, the full Foundry suite (fuzz + invariants), both front builds, and the wallet e2e (anvil + deployed contract + Hub in chain mode + Playwright driving the real cockpit). Nothing reaches main broken without telling on itself.

Rollback

• Pages: dashboard → previous deployment, one click.
• Hub: restore .env.bak, remove deployments.json (back to simulated), systemctl restart obulus-hub.
• Contract: deploy a new address and re-run testnet-env.mts — immutability cuts both ways.