bsc的dummyId，
在非0的情况下，如果出现重复，bscscan会报fail:
主要代码是这样：
func main() {
serverAddress, contractAddress, ownerPublicKey, ownerPrivateKey := GetConfig()
fmt.Printf("serverAddress:%v, contractAddress:%v, ownerPublicKey:%v, ownerPrivateKey:%v", serverAddress, contractAddress, ownerPublicKey, ownerPrivateKey)
// 注意，如果dummyId重复了，会导致网络fail!!!
// dummyId如果为0是无所谓的
var (
pId = int64(0) // 勋章ID
dummyId = int64(0) // 全局唯一ID，可以是表的ID，自己生成也行，仅用来进行防止重复mint
level = int64(0) // 勋章等级
userPublicKey = "0x42e89025aa15e8c70aa5b713f"
userPrivateKey = "x x x x x"
canTransfer = false // 勋章是否支持转账
)
// 连接到节点
client, _ := ethclient.Dial(serverAddress)
chainId, err := client.ChainID(context.Background())
if err != nil {
panic(err)
}
// 服务器签名：使用合约管理员的私钥
sign, err := MedalNftSigner(ownerPrivateKey, chainId.Int64(), contractAddress, pId, dummyId, level, userPublicKey, canTransfer)
if err != nil {
panic(err)
}
fmt.Printf("sign:%v\n", sign)
// 用户信息
userPrivateKeyEcdsa, err := crypto.HexToECDSA(userPrivateKey)
if err != nil {
panic(err)
}
auth, err := Author(userPrivateKeyEcdsa, client, 500000, 0)
if err != nil {
panic(err)
}
medal, err := triplec.NewTriplec(common.HexToAddress(contractAddress), client)
if err != nil {
panic(err)
}
// 客户端调用claim，验证签名：签名
{
signBytes, err := hexutil.Decode(sign)
if err != nil {
panic(err)
}
tx, err := medal.Claim(auth, big.NewInt(pId), big.NewInt(dummyId), big.NewInt(level), common.HexToAddress(userPublicKey), canTransfer, signBytes)
if err != nil {
panic(err)
}
hash := tx.Hash().Hex()
fmt.Printf("hash:%s \n", hash)
}
}