# Trading Zones Project 402
Use GET /v1/signals/{symbol}/4h for BTC, ETH, XRP or ONDO.
Payment protocol: x402 exact.
Network: Base Mainnet (eip155:8453; chain ID 8453).
Currency: native Circle USDC with 6 decimals.
USDC contract: 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913.
Pay-to address: 0x449352D4B7A7928dBE64eec73B2427B7b3C98e81.
Do not use Ethereum mainnet USDC or bridged USDbC.
The package is based on the latest closed 4H candle. Read live entry price from the Binance URL returned in the response.
Trend fields use LONG, SHORT or NEUTRAL. Indicator states use up, down or neutral.
Availability: cached data expires at T-1:00 before each UTC 4H boundary. During REFRESHING, until approximately T+2:30, the API returns HTTP 503 with Retry-After: 15 and does not request payment.
Public metadata: /catalog.json, /openapi.json, /v1/performance/summary and /v1/status.
Public evidence: GET /v1/performance/summary returns Zenek's closed 4H setup count, wins, losses and win rate. It is a live model simulation, not brokerage-account performance and not a guarantee of future results.