Cross-Chain (CCTP)

1. Starknet: USDC burned via TokenMessenger.depositForBurn
2. Circle: attestation signers verify the burn (~5 sec fast mode)
3. Solana: USDC minted to recipient's wallet via receiveMessage

// 1. Redeem — returns 202 with redeemId
const res = await fetch("https://api.chipipay.com/v1/gifts/claim/CODE/redeem", {
  method: "POST",
  headers: { "Content-Type": "application/json" },
  body: JSON.stringify({
    walletAddress: "FZQq6KCS...", // Solana wallet pubkey
    chain: "solana",
  }),
});

const { redeemId, status } = await res.json();
// status = "BRIDGING"

// 2. Poll until SUCCESS
while (true) {
  const statusRes = await fetch(
    `https://api.chipipay.com/v1/gifts/claim/CODE/status/${redeemId}`
  );
  const data = await statusRes.json();

  if (data.status === "SUCCESS") {
    console.log("USDC received on Solana:", data.receiveChainTxHash);
    break;
  }
  if (data.status === "FAILED") {
    console.error("Bridge failed. Burn tx:", data.cctpBurnTxHash);
    break;
  }

  await new Promise(r => setTimeout(r, 5000)); // poll every 5 sec
}

PENDING → BRIDGING → ATTESTED → SUCCESS
                  ↘ FAILED (if bridge times out or Solana tx fails)