Get smart contract bytecode
A query that returns the bytecode for a smart contract instance**.** Anyone can request the byte code of a smart contract instance on the network. Queries do not change the state of the smart contract or require network consensus. The information is returned from a single node processing the query.
Query Signing Requirements
- The client operator account's private key (fee payer) is required to sign this query
Query Fees
Method | Type | Description | Requirements |
|---|---|---|---|
setContractId(<contractId>) | ContractId | The ID of the contract to return the bytecode for | Required |
Java
JavaScript
Go
//Create the query
ContractByteCodeQuery query = new ContractByteCodeQuery()
.setContractId(contractId);
//Sign with the client operator private key and submit to a Hedera network
ByteString bytecode = query.execute(client);
//Create the query
const query = new ContractByteCodeQuery()
.setContractId(contractId);
//Sign with the client operator private key and submit to a Hedera network
const bytecode = await query.execute(client);
//Create the query
query := hedera.NewContractByteCodeQuery().
SetContractID(contractId)
//Sign with the client operator private key to pay for the query and submit the query to a Hedera network
bytecode, err := query.Execute(client)
if err != nil {
panic(err)
}
Method | Type | Description | Requirements |
|---|---|---|---|
getContractId(<contractId>) | ContractId | Get the contract ID on the transaction | Required |
Java
JavaScript
Go
//Create the query
ContractByteCodeQuery query = new ContractByteCodeQuery()
.setContractId(newContractId);
//Get the contract ID
query.getContractId()
//v2.0.0
//Create the query
const query = new ContractByteCodeQuery()
.setContractId(newContractId);
//Get the contract ID
query.getContractId()
//v2.0.0
//Create the query
query := hedera.NewContractByteCodeQuery().
SetContractID(contractId)
query.GetContractID()
//v2.0.0
Last modified 21d ago