> ## Documentation Index
> Fetch the complete documentation index at: https://docs.b3.fun/llms.txt
> Use this file to discover all available pages before exploring further.

# B3 chain retired

B3 mainnet (chain ID 8333) has been retired. $B3 on Base is not affected.

B3 mainnet (chain ID 8333) has been retired. Its RPC, explorer and testnet no longer run. Do not send funds to any B3 bridge address, and do not add B3 to a wallet as a working network.

\$B3 is an ERC-20 token on Base and is not affected. See [the \$B3 token](/protocol/b3-token).

## If you started a withdrawal

New withdrawals are closed. If you started one before that, prove and finalize it under History on [bridge.b3.fun](https://bridge.b3.fun).

If a withdrawal is stuck or you could not finish it, ask for help in the [B3 Discord](https://discord.gg/b3dotfun). The team never DMs first and will never ask for your seed phrase or private key.

## If you built on B3

These pages described building on B3 mainnet and appchains, and they have been removed: scaling, network setup, the bridge guide, the ecosystem directory and CreateKit. New CreateKit collections can no longer be created.

For what to build on now, see the [B3 SDK](/sdk/introduction) and the [product docs](/products).