ERA is the core token of the Caldera ecosystem, and it's no exaggeration to call it the 'inter-chain delivery fee'.
Caldera itself acts as a multi-Rollup coordination layer, allowing different Rollups to communicate data and share resources like they are on the same chain, rather than each doing its own thing. To send messages and synchronize states in this network, you need to use ERA to pay, which incentivizes validation nodes to help confirm information. More professionally speaking, ERA is not just a medium for transactions; it also takes on the functions of network security and governance—nodes must stake ERA to participate in validation, and errors will lead to penalties, while holders can vote to decide on protocol upgrades.
The advantage of Caldera is that it is not a traditional cross-chain bridge type of 'mover', but instead uses lightweight clients and aggregated signatures to directly verify states between chains, reducing trust risks. For developers, this means they can build cross-chain DApps faster and more reliably; for investors, the demand for ERA will increase as the frequency of cross-chain interactions rises, and such fundamental tokens usually have long-term value support.
