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burn-a-token.md

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Burn a token

Burns fungible and non-fungible tokens owned by the Treasury Account. If no Supply Key is defined, the transaction will resolve to TOKEN_HAS_NO_SUPPLY_KEY.

  • The operation decreases the Total Supply of the Token.
  • Total supply cannot go below zero.
  • The amount provided must be in the lowest denomination possible.
    • Example: Token A has 2 decimals. In order to burn 100 tokens, one must provide an amount of 10000. In order to burn 100.55 tokens, one must provide an amount of 10055.
  • This transaction accepts zero unit token burn operations for fungible tokens (HIP-564)

Transaction Signing Requirements

  • Supply key
  • Transaction fee payer account key

Transaction Fees

  • Please see the transaction and query fees table for base transaction fee
  • Please use the Hedera fee estimator to estimate your transaction fee cost

Methods

Method Type Description Requirement
setTokenId(<tokenId>) TokenId The ID of the token to burn supply Required
setAmount(<amount>) long The number of tokens to burn (fungible tokens) Optional
setSerials(<serials>) List<long> Applicable to tokens of type NON_FUNGIBLE_UNIQUE.The list of NFT serial IDs to burn. Optional
addSerial(<serial>) long Applicable to tokens of type NON_FUNGIBLE_UNIQUE.The serial ID to burn. Optional

{% tabs %} {% tab title="Java" %}

//Burn 1,000 tokens
TokenBurnTransaction transaction = new TokenBurnTransaction()
     .setTokenId(tokenId)
     .setAmount(1000);

//Freeze the unsigned transaction, sign with the supply private key of the token, submit the transaction to a Hedera network
TransactionResponse txResponse = transaction.freezeWith(client).sign(supplyKey).execute(client);

//Request the receipt of the transaction
TransactionReceipt receipt = txResponse.getReceipt(client);

//Obtain the transaction consensus status
Status transactionStatus = receipt.status;

System.out.println("The transaction consensus status is " +transactionStatus);

//v2.0.1

{% endtab %}

{% tab title="JavaScript" %}

//Burn 1,000 tokens and freeze the unsigned transaction for manual signing
const transaction = await new TokenBurnTransaction()
     .setTokenId(tokenId)
     .setAmount(1000)
     .freezeWith(client);

//Sign with the supply private key of the token 
const signTx = await transaction.sign(supplyKey);

//Submit the transaction to a Hedera network    
const txResponse = await signTx.execute(client);

//Request the receipt of the transaction
const receipt = await txResponse.getReceipt(client);
    
//Get the transaction consensus status
const transactionStatus = receipt.status;

console.log("The transaction consensus status " +transactionStatus.toString());

//v2.0.7

{% endtab %}

{% tab title="Go" %}

//Burn 1,000 tokens and freeze the unsigned transaction for manual signing
transaction, err = hedera.NewTokenBurnTransaction().
		SetTokenID(tokenId).
		SetAmount(1000).
		FreezeWith(client)

if err != nil {
		panic(err)
}

//Sign with the supply private key of the token, submit the transaction to a Hedera network
txResponse, err := transaction.Sign(supplyKey).Execute(client)

if err != nil {
		panic(err)
}

//Request the receipt of the transaction
receipt, err = txResponse.GetReceipt(client)

if err != nil {
		panic(err)
}

//Get the transaction consensus status
status := receipt.Status

fmt.Printf("The transaction consensus status is %v\n", status)

//v2.1.0

{% endtab %} {% endtabs %}