> For the complete documentation index, see [llms.txt](https://t-blocks.gitbook.io/t-blocks-documentation/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://t-blocks.gitbook.io/t-blocks-documentation/dual-rail-distribution/what-is-dual-rail-access.md). # What Is Dual-Rail Access Dual-rail access is T-Blocks' core distribution architecture. Every instrument issued through T-Blocks Trio Fund is accessible through two parallel distribution channels: #### **Rail 1** **— ISIN / Banking Infrastructure** The instrument is assigned an ISIN and distributed through traditional banking channels: placement agents, broker-dealers, private banks, and institutional custody systems. Settlement occurs through standard banking infrastructure (wire transfer, Euroclear/Clearstream). Investors interact with familiar banking interfaces and processes. #### **Rail 2 — Digital Primary Market** The same instrument is represented as a digital token on the XRP Ledger and distributed through regulated digital capital-market venues. Settlement occurs on-chain. Investors interact with digital wallets and regulated trading platforms. Both rails represent the same legal instrument — the same SubFund, the same ISIN, the same rights, the same creditor hierarchy, the same security. The difference is the settlement and access infrastructure, not the instrument itself. **Why this matters.** Different investors have different infrastructure preferences. A Swiss private bank may prefer ISIN-based settlement through its existing custody systems. A digital-native family office may prefer on-chain settlement through a regulated digital venue. A Gulf sovereign wealth fund may want ISIN access for its main allocation and digital access for a separate digital asset mandate. Dual-rail access ensures that T-Blocks instruments are accessible to the broadest possible institutional investor base without requiring any investor to adopt unfamiliar infrastructure.