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CreateWitness gRPC Method

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Updated on
May 13, 2025

CreateWitness gRPC Method

Parameters

from
string
REQUIRED
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urlStr
string
REQUIRED
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Returns

transaction
object
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raw_data
object
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ref_block_bytes
string
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ref_block_num
integer
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ref_block_hash
string
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expiration
integer
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auths
array
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data
string
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contract
array
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type
string
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parameter
object
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value
string
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type_url
string
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provider
string
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ContractName
string
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Permission_id
integer
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scripts
string
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timestamp
integer
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fee_limit
integer
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signature
array
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ret
array
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fee
integer
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ret
string
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contractRet
string
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assetIssueID
string
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withdraw_amount
integer
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unfreeze_amount
integer
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exchange_received_amount
integer
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exchange_inject_another_amount
integer
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exchange_withdraw_another_amount
integer
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exchange_id
integer
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shielded_transaction_fee
integer
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orderId
string
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orderDetails
array
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makerOrderId
string
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takerOrderId
string
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fillSellQuantity
integer
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fillBuyQuantity
integer
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withdraw_expire_amount
integer
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cancelUnfreezeV2Amount
object
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txid
string
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constant_result
array
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result
object
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result
boolean
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code
string
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message
string
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energy_used
integer
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logs
array
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address
string
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topics
array
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data
string
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internal_transactions
array
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hash
string
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caller_address
string
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transferTo_address
string
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callValueInfo
array
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callValue
integer
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tokenId
string
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note
string
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rejected
boolean
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extra
string
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energy_penalty
integer
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Request
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package main
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import (
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"context"
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"crypto/tls"
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"encoding/json"
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"fmt"
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"github.com/fbsobreira/gotron-sdk/pkg/client"
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"google.golang.org/grpc"
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"google.golang.org/grpc/credentials"
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)
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// Quicknode endpoints consist of two crucial components: the endpoint name and the corresponding token
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// For eg: QN Endpoint: https://docs-demo.tron-mainnet.quiknode.pro/abcde123456789
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// endpoint will be: docs-demo.tron-mainnet.quiknode.pro:50051 {50051 is the port number for Tron gRPC}
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// token will be : abcde123456789
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var token = "YOUR_TOKEN"
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var endpoint = "YOUR_ENDPOINT:50051"
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type auth struct {
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token string
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}
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func (a *auth) GetRequestMetadata(ctx context.Context, uri ...string) (map[string]string, error) {
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return map[string]string{
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"x-token": a.token,
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}, nil
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}
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func (a *auth) RequireTransportSecurity() bool {
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return false
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}
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func main() {
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/*
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* 1. The CreateWitness method allows an account to apply to become a Super Representative (SR).
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* 2. The account must have enough TRX (9999 TRX) to apply for SR candidacy.
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*/
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opts := []grpc.DialOption{
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grpc.WithTransportCredentials(credentials.NewTLS(&tls.Config{})),
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grpc.WithPerRPCCredentials(&auth{token}),
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}
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conn := client.NewGrpcClient(endpoint)
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if err := conn.Start(opts...); err != nil {
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panic(err)
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}
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defer conn.Conn.Close()
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// Using variable names that match the function signature
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from := "TZ4UXDV5ZhNW7fb2AMSbgfAEZ7hWsnYS2g"
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urlStr := "https://my-tron-witness-info.example.com"
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fmt.Println("Creating witness application transaction...")
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// Call CreateWitness with parameters matching the function signature:
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// func (g *GrpcClient) CreateWitness(from, urlStr string) (*api.TransactionExtention, error)
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tx, err := conn.CreateWitness(from, urlStr)
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if err != nil {
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fmt.Printf("Error creating witness application transaction: %v\n", err)
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return
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}
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fmt.Println("Witness application transaction created successfully. Transaction details:")
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jsonData, _ := json.MarshalIndent(tx, "", " ")
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fmt.Println(string(jsonData))
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fmt.Println("\nBroadcasting transaction to the TRON network...")
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result, err := conn.Broadcast(tx.Transaction)
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if err != nil {
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fmt.Printf("Error broadcasting transaction: %v\n", err)
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return
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}
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if !result.GetResult() {
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fmt.Printf("Broadcast failed: %s\n", result.GetMessage())
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return
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}
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fmt.Println("Witness application successful! Result:")
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resultJSON, _ := json.MarshalIndent(result, "", " ")
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fmt.Println(string(resultJSON))
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}
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