# Phase 2 Launch Phase 2 expands Extinct Chain to Base with 556 NFTs intended to simplify onboarding and extend distribution to a second chain. Launch highlights include: * 556 NFTs on Base * Multi-sig wallet security * Immediate cross-chain bridging support * Lower fees for smoother participation Base combines lower transaction costs with Ethereum connectivity. That lowers participation costs and adds access to Ethereum-linked infrastructure. --- # Agent Instructions: Querying This Documentation If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question. Perform an HTTP GET request on the current page URL with the `ask` query parameter: ``` GET https://extinctchain.gitbook.io/extinctchain-whitepaper/cover-and-executive-summary/table-of-contents/introduction/evolution-of-extinct-chain/problem-statement/our-solution/nft-collection/phase-1-recap/phase-2-launch.md?ask= ``` The question should be specific, self-contained, and written in natural language. The response will contain a direct answer to the question and relevant excerpts and sources from the documentation. Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.