PredictArc Docs

Arc Testnet prediction markets with clean USDC flows.

PredictArc is a testnet-first prediction market interface built around Arc Testnet. It combines public reference odds, wallet-based testnet trading, portfolio tracking, and AI market summaries in one lightweight product.

About Arc

Arc Testnet is used here as the execution layer for wallet connection, testnet USDC movement, and prediction-market settlement experiments.

  • Network name: Arc Testnet
  • RPC: https://rpc.testnet.arc.network
  • Chain ID: 5042002
  • Native token: USDC

How PredictArc Works

Users browse markets, choose YES or NO, enter testnet USDC, and submit a position from a connected wallet.

  • Reference probabilities help users understand current market sentiment.
  • Testnet positions are tracked in the Portfolio page.
  • Resolved winning positions can be claimed from the app flow.

Reference Odds

Discovery markets use a public read-only reference feed. PredictArc does not pretend this feed is its own testnet activity.

  • Reference data can update as public market probabilities move.
  • Displayed testnet volume is separate from real-money market volume.
  • Arc testnet trading remains independent from the reference source.

Wallet And Faucet

Connect MetaMask, OKX Wallet, Rabby, Trust Wallet, or another injected wallet, add Arc Testnet when prompted, then claim test USDC from the faucet.

Faucet: https://faucet.circle.com

The app button can connect and disconnect locally. To revoke wallet permissions completely, use your wallet's connected sites settings.

Supabase Layer

PredictArc can optionally use Supabase for off-chain product data while keeping trading and settlement on Arc Testnet.

  • Wallet profiles and activity events can be stored off-chain.
  • Portfolio cache helps the page feel faster when RPC is slow.
  • The smart contract remains the source of truth for positions.

AI Briefs

The market detail page can generate neutral summaries with YES cases, NO cases, risks, and watchlists.

  • OpenRouter can be used for the hosted free-model route.
  • If the API is missing, PredictArc shows a local preview instead of breaking.
  • AI output is informational only, not financial advice.

Testnet Safety

PredictArc is built for testing product flow, not for real-money trading.

  • Use a dedicated test wallet.
  • Do not upload private keys or API keys to GitHub.
  • Verify contract address, market rules, and resolution source before trading.
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