예측 시장과 Polymarket — 기술자가 알아야 할 온체인 구현 세부

// 활성 마켓 목록
GET https://clob.polymarket.com/markets
  ?active=true&closed=false

// 특정 마켓 오더북
GET https://clob.polymarket.com/book
  ?token_id=<YES_positionId>

// 응답 예시
{
  "market": "0xabc...",
  "question": "트럼프 당선?",
  "conditionId": "0x123...",
  "tokens": [
    { "token_id": "...", "outcome": "Yes", "price": 0.62 },
    { "token_id": "...", "outcome": "No",  "price": 0.38 }
  ],
  "volume": "3300000000"
}

from py_clob_client.client import ClobClient
from py_clob_client.clob_types import OrderArgs, OrderType

client = ClobClient(
    host="https://clob.polymarket.com",
    key=PRIVATE_KEY,
    chain_id=137  # Polygon
)

# GTC 지정가 매수: YES 토큰 @0.62
order = client.create_order(
    OrderArgs(
        token_id=YES_TOKEN_ID,
        price=0.62,
        size=100,           # 100 shares
        side="BUY",
        order_type=OrderType.GTC
    )
)
resp = client.post_order(order)
print(resp["orderID"])  # 오더북에 등록됨

const CTF_ADDRESS = "0x4D97DCd97eC945f40cF65F87097ACe5EA0476045";
const ctf = new ethers.Contract(CTF_ADDRESS, CTF_ABI, signer);

// 1. USDC approve
await usdc.approve(CTF_ADDRESS, parseUnits("10", 6));

// 2. USDC → YES + NO 분할
await ctf.splitPosition(
  USDC_ADDRESS,
  ethers.ZeroHash,       // parentCollectionId
  conditionId,
  [1, 2],                // partition (indexSets)
  parseUnits("10", 6)    // 10 USDC
);

// 3. 결과 확정 후 YES 토큰 → USDC 환매
await ctf.redeemPositions(
  USDC_ADDRESS,
  ethers.ZeroHash,
  conditionId,
  [1]  // YES indexSet
);