Testnets

Join a Hedera Testnet

Overview

Hedera Testnets provide developers access to a free testing environment for Hedera network services. Testnets simulate the exact same development environment as you would expect for mainnet. This includes transaction fees, throttles, available services, etc. To create a Hedera testnet or previewnet account, you can visit the Hedera Developer Portal.

Once your application has been built and tested in this test environment you can expect to migrate your decentralized application to mainnet without any changes.

Test Networks:

Name	Description
Test Network	Runs the same code as the Hedera mainnet, designed to provide a pre-production environment for developers about to move to mainnet. You can find compatible SDKs here.
Preview Test Network	Code that is under development by the Hedera team, and likely to be used in an upcoming release, designed to give developers early exposure to features coming down the pipe. Updates to the network are made frequently. There is no guarantee an SDK will readily support the up-and-coming features. Note: Updates to this network are triggered by a new release and are frequent. These updates will not be reflected on the status page.

Network Service	Availability
Cryptocurrency	Limited
Consensus Service	Limited
File Service	Limited
Smart Contract Service	Limited
Token Service	Limited

Test Network Resets

The mirror node and consensus node test network are scheduled to reset once a quarter. When a testnet reset occurs all account, token, contract, topic, schedule, and file data are wiped.

Developers will no longer have access to the state data from test network consensus nodes. For example, you will not be able to perform transactions or queries on an account that existed before the reset.

The testnet mirror node will be available for developers for two weeks after the date of the reset to store any data before access is completely removed. You will be able to query old testnet information for the two-week period if is it available.

What you should do:

• Take note of the upcoming reset dates

• Have the ability to recreate test data for your application to minimize interruptions

• After the reset, you will need to visit the Hedera Developer Portal to get your new testnet account ID

  • The public and private key pair will remain the same after resets

• Subscribe to the Hedera status page to receive reset notifications
• Mirror Node operators can reference the instructions here to set-up your mirror node

  • GCP GCS and AWS S3 buckets: hedera-testnet-streams-2023-01

If you have any questions or concerns, please connect with us via Discord.

Reset Dates:

2023

• January 26, 2023

• April 27, 2023

• July 27, 2023

• October 26, 2023

Test Network Throttles

Limited Support Transactions are currently throttled for testnets. You will receive a "BUSY" response if the number of transactions submitted to the network exceeds the threshold value.

Network Request Type	Throttle (tps)
Cryptocurrency Transactions	AccountCreateTransaction: 2 tps AccountBalanceQuery: unlimited TransferTransaction (inc. tokens): 10,000 tps Other: 10,000 tps
Consensus Transactions	TopicCreateTransaction: 5 tps Other: 10,000 tps
Token Transactions	TokenMintTransaction: 125 TPS for fungible mint 50 TPS for NFT mint TokenAssociateTransaction: 100 tps TransferTransaction (inc. tokens): 10,000 tps Other: 3,000 tps
Schedule Transactions	ScheduleSignTransaction: 100 tps ScheduleCreateTransaction: 100 tps
File Transactions	10 tps
Smart Contract Transactions	ContractExecuteTransaction: 350 tps ContractCreateTransaction: 350 tps
Queries	ContractGetInfo: 700 tps ContractGetBytecode: 700 tps ContractCallLocal: 700 tps FileGetInfo: 700 tps FileGetContents: 700 tps Other: 10,000 tps
Receipts	unlimited (no throttle)