USDi is an inflation-indexed USD stablecoin issued by USDi Partners LLC, formed in mid-2024 and based in Basking Ridge, New Jersey. The ERC-20 token tracks the US Not-Seasonally-Adjusted CPI using the TIPS reference-CPI interpolation method against a base CPI of 315.605 (base date March 1, 2025), so each token preserves the purchasing power of a December 2024 dollar. Reserves are invested in the Enduring US Inflation Tracking Fund managed by Enduring Investments, with NAV calculated by independent administrator Trident Fund Services Inc; the issuer claims no securities or money-transmission licenses and no SEC filings for USDi Partners were located on EDGAR.

No licenses or registrations disclosed; positioned in the whitepaper as a currency, not an investment vehicle. EDGAR full-text search returns no SEC filings for USDi Partners LLC (checked 2026-07). Direct fiat mints/burns above $1mm require KYC/AML with USDi Partners.

Whitepaper discloses a very small transaction fee on public mint/burn (size not published) and that the backing fund has outperformed CPI by roughly 5-13bps per month net of fees; excess return over the CPI-indexed liability accrues to overcollateralization/the issuer. USDi pays no interest to holders. No attestation reports were locatable on the public website despite claims they are posted.