Oracle settlement in Rúnar

snippet-oracle.ts

public settle(outcomeType: bigint, rabinSig: RabinSig,
              padding: ByteString, playerSig: Sig) {
  // Verify the oracle attests to this outcome
  const msg = num2bin(outcomeType, 8n);
  assert(verifyRabinSig(msg, rabinSig, padding, this.oraclePubKey));

  // Verify it's a win
  assert(outcomeType == 1n);

  // Player authorises the spend
  assert(checkSig(playerSig, this.playerPubKey));
}