The core is upgrading interoperability from 'peer-to-peer transport' to 'network-level routing and clearing'. Traditional bridges are like the wooden bridges built separately between two cities—security models, costs, and delays are not unified; Caldera’s Metalayer is more like a routing network: it has an intent engine (you just describe the goal), a message/state layer below (which breaks down a cross-chain process into auditable steps), and in the middle, a solver selects the optimal route and completes the settlement. Therefore, application parties do not need to adapt to each bridge but adjust 'cross-chain business routing' like adjusting HTTP routing. This is the essence of the 'settleable application network layer': not only 'can reach', but also to reach and complete the final accounting of funds/state in a verifiable way.
2) How do Intent and Hyperlane work together? Provide an end-to-end path.
Developer or frontend submits: Settle 100 USDC from Rollup-A to Rollup-B within 5 minutes, with ≤0.3% cost, and call contract X.mint() on B → intent engine takes the order → solver selects 'Route-1: A→Ethereum→B' or 'Route-2: A→Celestia DA→B' based on congestion, fees, and liquidity → On the selected path, Hyperlane is responsible for passing 'message + proof'; if there are price fluctuations/duration will exceed limits, the solver triggers rerouting/rollback strategy → After arriving, execute X.mint() on B chain and write back the receipt to A (completing bilateral reconciliation). From the developer's perspective, there is only one 'submit-complete', and the complexity is absorbed by the network layer.
3) How to use the 'menu selection' of the Rollup Engine? Provide a simplified decision table.
Call stack: OP/Arbitrum (good EVM compatibility, quick launch); ZK series (strong eventual consistency, suitable for high-frequency clearing/compliance-sensitive businesses).
DA solutions: Ethereum (strong security, medium to high cost); EigenDA/Celestia/Avail (lower cost, high throughput, suitable for high-frequency business); hybrid/switchable (dynamically scheduled according to business volume).
Gas tokens: Choosing a native token can create ecological binding and incentives, but be aware of secondary liquidity and user mindset; choosing ETH/stablecoins is more intuitive and has better conversion rates.
Idea: First prioritize using 'security ≥ cost ≥ delay', then apply 'short-term business goals (cold start/retention) and mid-term financial goals (cost rate/subsidy curve)', and finally focus on the engineering implementation path.
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