Definition
A Solana cluster is a network of validators sharing a ledger. Mainnet-beta is the production chain where real SOL and real tokens live. Devnet is a public sandbox with free SOL from faucets. Testnet is used by validators to test upgrades.
When a wallet or tool asks which cluster you are on, it means which RPC endpoint you are connected to. MakeMeACoin operates on mainnet-beta.
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