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Most RWA tokenization protocols are built around a single chain. Novastro is building a modular on-chain ledger for RWAs with two layers that serve different purposes. The Issuance Layer is anchored to Ethereum. Assets are minted through SPV-backed Digital Twin Containers. All legal logic, compliance automation, and ownership records are maintained directly on Ethereum. The Trading Layer routes tokenized assets across chains built for performance. Execution can move to Arbitrum, Sui, or Solana depending on cost, speed, and logic needs. Liquidity flows across chains. Compliance stays anchored. This infrastructure lets issuers use the most secure chain for compliance and the fastest chains for market access.