# thBILL Stablecoin Explained

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**Publisher:** Decentralized Finance Publication (https://decentralized-finance.io)
**Author:** Decentralized Finance editorial team
**Reviewed by:** Kaiser Khan, Editor in Chief
**Category:** Stablecoins
**Updated:** Apr 23, 2026
**Trust:** Independent, ad-free editorial research. No display advertisements, no paid protocol coverage, no affiliate-driven rankings.

## Summary

thBILL is a tokenized financial instrument offering on-chain access to a diversified collection of short-duration, institutional-grade U.S. Treasury bills. Built on the Theo tokenization platform, it delivers regulated exposure with integrated liquidity, cross-chain functionality, and DeFi compatibility.

thBILL functions as a tokenized financial instrument that grants on-chain access to a portfolio of short-duration, institutional-grade U.S. Treasury bills. Operating as an index-style token on the Theo tokenization platform, it combines regulated Treasury exposure with integrated liquidity mechanisms, support for multiple blockchain networks, and integration capabilities within decentralized finance applications.

## Overview

thBILL operates as an index-style token offering on-chain exposure to short-duration, institutional-grade U.S. Treasury bills sourced from regulated financial entities. Upon initial deployment, the underlying portfolio includes only tULTRA, a tokenized version of Wellington Management's ULTRA money market fund that maintains holdings of short-term U.S. Treasury securities and is administered through Standard Chartered's Libeara platform in partnership with FundBridge Capital. The token employs Theo's iToken standard to maintain the designated portfolio composition and ensure transparent on-chain valuation. Should regulated institutions introduce additional tokenized Treasury bill offerings in the future, these assets can be incorporated into thBILL to enhance diversification and expand Treasury market exposure.

thBILL aims to overcome longstanding obstacles affecting the uptake of tokenized Treasury products. The product facilitates liquidity through coordinated market-making functions across various platforms, operates across multiple blockchain networks including Ethereum, Base, Arbitrum, and HyperEVM, and maintains full compatibility with lending platforms and derivative trading systems. Optimistic minting functionality allows users to immediately obtain the token while underlying transactions settle in the background, reducing friction in user experience. Participation in minting and redemption requires completion of identity verification procedures, with redemptions processed in USDC while users maintain no direct ownership claims on the underlying assets.

thBILL accommodates multiple applications: retail participants can secure professional-grade Treasury exposure, generate additional returns through lending opportunities, or pledge thBILL as collateral; professional market participants can implement Treasury strategies on blockchain infrastructure without operational complications; and the wider financial ecosystem gains access to a yield-generating base asset suitable for embedding within more sophisticated investment structures. Launching as the inaugural product on Theo's tokenization platform, thBILL also functions as a demonstration model for subsequent tokenized offerings, with comprehensive technical and operational support delivered from inception.

## Features

iToken Standard

thBILL adheres to Theo's iToken Standard, which defines index tokens that aggregate multiple underlying assets through combining various tTokens and potentially other iTokens. These tokens conform to the ERC-20 token standard and generate receipt tokens identified by the letter 'i' prefix, as demonstrated by iDN. An iToken's worth derives from the aggregate valuation of its constituent assets, computed utilizing price information supplied by oracle systems. The portfolio composition for each index can be tailored through predetermined allocation percentages that are automatically enforced by smart contract code. This framework permits a single token to furnish varied exposure across multiple tokenized instruments while preserving on-chain price discovery and accounting transparency.

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