# Belief Systems > Investor documentation for Belief Index — diversified, investable indices built on prediction market outcome tokens. ## Docs - [How It Works](https://docs.beliefsystems.xyz/how-it-works.md): End-to-end overview of the investor flow: deposit, mint, hold, redeem, and withdraw. - [Index Series](https://docs.beliefsystems.xyz/indices/index-series.md): How Belief Index series are constructed — themed baskets of prediction markets with defined weights and lifecycle. - [NAV Methodology](https://docs.beliefsystems.xyz/indices/nav-methodology.md): Complete specification of how Belief Index computes Net Asset Value — transparent, verifiable, and rules-based. - [NAV Per Share](https://docs.beliefsystems.xyz/indices/nav-per-share.md): How NAV per share is computed, what it represents, and how it differs from the published index level. - [Perpetual Series](https://docs.beliefsystems.xyz/indices/perpetual-series.md): How Perpetual series differ from Fixed series – composition evolves over time through formal reconstitution, with continuous index history and transparent cost disclosure. - [Worked Examples](https://docs.beliefsystems.xyz/indices/worked-examples.md): Step-by-step NAV calculations for different scenarios — active markets, resolved markets, staleness, and performance tracking. - [What is Belief Index?](https://docs.beliefsystems.xyz/introduction.md): A diversified, investable index product built on prediction market outcome tokens — like an ETF for event-driven markets. - [Deposits & Withdrawals](https://docs.beliefsystems.xyz/investing/deposits-withdrawals.md): How to fund your account and withdraw your cash balance. - [Fees](https://docs.beliefsystems.xyz/investing/fees.md): Fee structure for Belief Index series — types of fees, how they're applied, and current status. - [Minting Shares](https://docs.beliefsystems.xyz/investing/minting-shares.md): How to invest in a Belief Index series by minting new shares at the next NAV window. - [Redeeming Shares](https://docs.beliefsystems.xyz/investing/redeeming-shares.md): How to exit a Belief Index position by redeeming shares at the next NAV window. - [FAQ](https://docs.beliefsystems.xyz/reference/faq.md): Frequently asked questions about Belief Index — how it works, what it costs, and what to expect. - [Glossary](https://docs.beliefsystems.xyz/reference/glossary.md): Key terms and definitions used throughout the Belief Index documentation. - [Disclosures](https://docs.beliefsystems.xyz/risk/disclosures.md): Formal legal disclosures applicable to all Belief Systems services and the Alpha Program. - [Risk Factors](https://docs.beliefsystems.xyz/risk/risk-factors.md): Comprehensive disclosure of risks associated with investing in Belief Index series. - [Asset Security](https://docs.beliefsystems.xyz/trust/asset-security.md): How investor assets are held, secured, and protected in the Belief Index custody framework. - [On-Chain Verification](https://docs.beliefsystems.xyz/trust/on-chain-verification.md): How investors can independently verify that Belief Index holdings exist on the blockchain. - [Why Belief Index?](https://docs.beliefsystems.xyz/why-belief-index.md): The investment thesis for diversified prediction market exposure through a single structured product. ## OpenAPI Specs - [openapi](https://docs.beliefsystems.xyz/api-reference/openapi.json)