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Quick Start

1. Configure Private Key and RPC

Please fill in your private key and RPC node address in the main function:

var rpcUrl = "https://your-rpc-url"
var privKey = "your private key (hex string, without 0x)"
var appKey = "App key"

2. Parameter Description

  • sourceChain: Source chain ID (string)
  • destChain: Destination chain ID (string)
  • sourceToken: Source chain Token address
  • destToken: Destination chain Token address
  • amount: Transfer amount (string, unit is minimum precision)
  • to: Recipient address (destination chain address, recommended to use Hex string)

3. Example Call

package main

import (
	"fmt"

	"github.com/Fintechain/gate-sdk/go/bridge-sdk-go/api"
	"github.com/Fintechain/gate-sdk/go/bridge-sdk-go/bridge"
	"github.com/Fintechain/gate-sdk/go/bridge-sdk-go/types"
	"github.com/ethereum/go-ethereum/crypto"
)

func main() {
	var rpcUrl = ""  // Blockchain RPC node URL
	var privKey = "" // Private key for data signing
	var appKey = ""  // App key

	privateKey, _ := crypto.HexToECDSA(privKey)
	fromAddress := crypto.PubkeyToAddress(privateKey.PublicKey)

	// Get signature data
	routerParams := types.RouterParams{
		SourceChain: "1",
		DestChain:   "56",
		SourceToken: "0xF3F2b4815A58152c9BE53250275e8211163268BA",
		DestToken:   "0xe37Bdc6F09DAB6ce6E4eBC4d2E72792994Ef3765",
		Amount:      "10000000",
		To:          fromAddress.Hex(),
	}
	routerUrl := "https://www.fintechain.org/proxy/api/oracle/router"
	routerResp, err := api.Router(appKey, routerUrl, &routerParams)
	if err != nil {
		fmt.Println("Router failed:", err)
	}

	fmt.Println("Bridge data:", routerResp)

	// Sign the returned data and send it to the blockchain
	b := bridge.NewBridge(types.Config{RPCUrl: rpcUrl})
	txHash, err := b.Cross(privateKey, &routerResp.Data.SignData)
	if err != nil {
		fmt.Println("Bridge failed:", err)
		return
	}
	fmt.Println("Bridge txHash:", txHash)
}

4. Main Function Descriptions

4.1. api.Router​

Calls the backend routing interface to obtain cross-chain parameters.

4.2. b.Cross​

Main process, automatically completes routing, approval, and transaction sending.