Private proof
Trust Envelope
Proof of who and why travels with each payment, kept private.
USDXX BY LYNXX · THE PROOF-CARRYING DIGITAL DOLLAR
Up to 12% a year · coming soon↓The digital dollar
that earns.
1 USDXX = 1 US dollar. Lock it for 3, 6 or 12 months and earn up to 12% a year with USDXX Earn.
Not launched yet. You can explore USDXX, but no real money is involved.
USDXX is the digital dollar. Indexx Pay is where you buy and spend it. LYNXX is the company behind USDXX.
Target value · 1 USDXX = 1 USD Proposed 1:1 reserve backing · “one coin, one dollar”
USDXX EARNUp to 12% a yearComing soon · proposed
TARGET VALUE$1.00Per USDXX token
LAUNCH NETWORKEthereumAdditional chains under review
CURRENT STATUSNot launched yetExplore only · no real money
USDXX EARN · OPT-IN
Hold dollars.
Earn up to 12% a year.
Coming soon
The longer you commit, the more you earn. Earnings never come out of the redemption reserve.
Calculate your earnings ↗You earn+120.00 USDXX
1,120.00 USDXX after 12 months
Proposed rates, per year, paid as a fixed reward each month and not compounded: 7% a year for 3 months pays 1.74% of the amount locked. USDXX Earn launches only after its funding source and independent legal, tax and risk review are approved. Not a guaranteed return, deposit rate or live offer.
WHAT MAKES USDXX DIFFERENT
A dollar that
proves itself.
USDXX enables businesses to prove identity, payment purpose and settlement conditions without publishing confidential invoices, amounts or commercial relationships.
Pay on conditions
Protected Settlement
Money moves only when the agreed conditions are met.
Share records privately
Selective Disclosure
Show a payment to your accountant for a limited time.
Proof features — Trust Envelope, Protected Settlement and Selective Disclosure — are in design and subject to independent legal review before launch.
For businesses & details Reserves, how payments work, networks, use cases and FAQ
THE VALUE BEHIND THE COIN
A dollar of value.
Built on a reserve.
USDXX is designed around backing and redemption. The proposed reserve belongs behind the token, held separately from the money that runs the company.
Read the risk disclosure ↗Cash & short-term Treasuries
Proposed reserve assets include cash, short-term U.S. Treasuries and permitted cash equivalents. No Bitcoin or other volatile crypto in the redemption reserve.
Proof you can follow
Public supply, reserve coverage and independent attestation are planned. Live figures will publish when verified reserve data becomes available.
A path back to dollars
Redemption for eligible participants, through licensed partners and approved channels. Final terms, fees and timing will be published before launch.
PILOT TRUST CENTER
What is verified today.
And what is still pending.
During the controlled pilot there are no live figures to publish. This is the honest status of every item that must be in place before USDXX can launch for value.
- Testnet circulating supply
- Not live for value
- Testnet mint activity
- Pilot only
- Testnet burn activity
- Pilot only
- Smart-contract address
- Published before live issuance
- Blockchain explorer
- Testnet
- Contract version
- Pilot build
- Security audit
- Scheduled before launch
- Reserve partner
- Not yet appointed
- Issuer partner of record
- Not yet appointed
- Latest reserve attestation
- Available before live issuance
- Average redemption time
- Target published before launch
- System status
- Controlled pilot · testnet
FROM DOLLARS TO PROVABLE PAYMENTS
How a USDXX
payment works.
Verify
Confirm your identity once.
Get USDXX
Add dollars, get the same amount in USDXX.
Add terms
Say what the payment is for.
Send
Details stay private.
Get paid
Money moves when the terms are met.
Cash out
Turn USDXX back into dollars.
Planned product flow. Minting, transfers, proof and redemption for real value are not available during the testnet pilot.
ONE IDENTITY. APPROVED NETWORKS.
Starts on Ethereum.
Built to go further.
One launch chain first. Additional networks follow only when liquidity, security and operational controls are ready.
EthereumPlanned launch chain
BNB ChainUnder review
PolygonUnder reviewBUILT FOR
Where a dollar
needs to settle.
USDXX starts where private terms and proof of settlement matter — not everywhere at once.
Exchanges & wallets
Reliable dollar liquidity, with redemption and listing APIs.
Fintechs & remitters
Faster cross-border settlement along integrated corridors.
Merchants & marketplaces
Lower-cost global payouts with checkout and treasury tooling.
Crypto-native businesses
24/7 working capital and multi-chain settlement.
KNOW YOUR DIGITAL DOLLAR
Clear questions.
Clear answers.
Is USDXX live?
USDXX is in a controlled pilot on testnet. It is not live for value. Public launch depends on partner readiness, legal clearance, security testing and successful redemption testing.
What is USDXX Earn?
USDXX Earn is a separate, opt-in program: commit USDXX for 3, 6 or 12 months and earn a proposed 7%, 9% or 12% a year, paid as a fixed reward each month. Earnings are funded separately from the USDXX redemption reserve. Holding USDXX on its own pays no interest and stays 1:1 and redeemable. Earn launches only after its funding and legal review are approved.
What is the Trust Envelope?
The Trust Envelope is USDXX’s proof layer: a payment can carry encrypted proof of eligibility, purpose and agreed conditions, and can settle only when those conditions are met. These features are in design and subject to independent legal review before launch.
What is the target value of one USDXX?
The target value is 1 USDXX = 1 USD. The proposed model combines 1:1 reserve backing with redemption for eligible participants. This is a product design target, not a live market quote or guarantee.
What backs USDXX?
The proposed reserve consists of cash, short-term U.S. Treasuries and permitted cash-equivalent instruments, held separately from company operating funds. No Bitcoin or other volatile crypto is in the redemption reserve. Final arrangements depend on licensed and regulated partners.
Who can mint and redeem?
Under the proposed model, minting and redemption would be available to approved participants who complete KYC or KYB and applicable screening. Availability, limits, timing and fees depend on the final issuer terms and jurisdiction.
How is USDXX related to LYNXX?
LYNXX is the company and technology platform. USDXX is its proposed digital dollar. A licensed partner is intended to act as issuer of record, alongside reserve, banking, custody and attestation partners.
GET INVOLVED
Join the
controlled pilot.
THE COMPANY BEHIND THE COIN
USDXX by LYNXX.
LYNXX is the company and technology platform. USDXX is its proposed digital dollar.