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USDIO

Heleos US Dollar

USDIO is the Heleos tokenized deposit denomination representing the United States Dollar.

Specifications

PropertyValue
Display DenominationUSDIO
On-Chain Denominationuusdio
Decimal Precision6
Modulex/stablecoin
Authority ModelStablecoin authority address (mint/burn restricted)
Sovereign ReferenceUS Dollar (USD)
Current Staking ModelConsensus staking restricted to uos
Current Fee ModelExempt from ecosystem transaction fee

Supported Operations

  • MsgMint - Issue new USDIO to a specified address (authority only)
  • MsgBurn - Redeem USDIO from circulation (authority only)
  • MsgSend - Transfer USDIO between Heleos addresses (any holder)
  • QueryBalance - Query USDIO balance for a given address
  • QueryTotalSupply - Query total USDIO in circulation
  • QueryDenomMetadata - Query USDIO metadata

Query Endpoints

CLI: heleosd query bank balances [address] --denom uusdio
CLI: heleosd query bank total-supply --denom uusdio
REST: GET /cosmos/bank/v1beta1/balances/{address}/by_denom?denom=uusdio
REST: GET /cosmos/bank/v1beta1/supply/by_denom?denom=uusdio
gRPC: cosmos.bank.v1beta1.Query/Balance with denom uusdio
gRPC: cosmos.bank.v1beta1.Query/SupplyOf with denom uusdio

Integration Path

USDIO is available for integration with United States banking institutions through the StableNow platform. Partner banks execute a Letter of Intent with Heleos, complete the StableNow integration process, receive their authorized custody address configuration, and begin tokenizing customer deposits as USDIO under their operational control.

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Technical Documentation - Version 1.0 | Effective Date: April 3, 2026