Autheo Testnet
The Autheo Testnet is forked from mainnet, so contracts you test here behave the way they will in production. Use the chain ID and endpoints below. If you are following a guide written before September 2026, your endpoints have changed.
Last updated: 2026-09-21·Reviewed by: Autheo Team
Network details
Use this network- Chain
- Autheo
- Chain ID
- 21270
- Network ID
- 21270
- Short name
- autheo-testnet
- Native currency
- THEO (18 decimals)
- Features
- EIP155, EIP1559
Endpoints
- RPC
https://rpc.testnet.autheo.com - Faucethttps://faucet.testnet.autheo.com
- EVM explorerhttps://evm-explorer.testnet.autheo.com
- Cosmos explorerhttps://cosmos.testnet.autheo.com
Legacy testnet
RetiringThe original Autheo testnet ran on chain ID 785 and had drifted away from mainnet, which is why it was replaced. It stays reachable for a short transition window and will be shut down in the coming weeks. Point any remaining work at chain ID 21270.
Final legacy testnet figures
As of September 21, 2026.
- 2,221,945
- Wallet addresses
- 1,204,157
- Smart contracts deployed
- 10,812,487
- Transactions
- 9,709,690
- Blocks produced
Read directly from the legacy explorer API and archived the same day: network statistics snapshot, contract counters snapshot.