Testnet resets

What a reset does#

A reset restarts the Testnet from a new genesis block. Everything created since the previous genesis is gone:

• All deployed contracts and their storage.
• All balances return to the genesis allocation; test tokens you claimed disappear.
• All nonces return to zero, and the chain history starts again from block 0.

The chain ID stays 305583. Contracts deployed with CREATE2 and a fixed salt can come back at the same address once redeployed.

Detecting a reset#

The genesis block hash changes on every reset. Store it and compare it on startup. The current genesis hash is 0xe7b741e632be03839586aa9278113e477f2618a9254a7a60bbe28aee7b3e3cb7.

const genesis = await publicClient.getBlock({ blockNumber: 0n });
if (genesis.hash !== storedGenesisHash) {
  // Testnet was reset: clear cached tokens, nonces, NFTs, activity and indexed data for chain 305583.
}

Surviving a reset#

• Deploy from scripts (Foundry scripts, Hardhat scripts), never by hand.
• Read contract addresses from a deployment manifest your scripts write, not from constants in app code.
• Key off-chain database rows by chain ID and genesis hash, or wipe them when the genesis changes.
• Invalidate wallet caches: nonces restart at zero after a reset.
• Re-claim test tokens from the faucet after a reset.

Notice and announcements#