How to Purchase Caldera (ERA) Using Sponge (OLD) ($SPONGE) in Indonesia

To buy Caldera using Sponge (OLD) in Indonesia, first, find a cryptocurrency exchange that supports the ERA/$SPONGE trading pair. Create an account, verify your identity, and deposit your $SPONGE into your exchange wallet. Locate the ERA/$SPONGE pair on the trading platform and place an order to exchange your Sponge (OLD) for Caldera. If the ERA/$SPONGE pair is unavailable, you can first exchange Sponge (OLD) for a stablecoin like Tether (USDT) or an Indonesian fiat currency like IDR, then trade that for Caldera. Be mindful of potential exchange fees, which vary by platform and can affect the total cost of your transaction.