EURIO

Heleos Euro

EURIO is the Heleos tokenized deposit denomination representing the Euro.

Specifications

Property	Value
Display Denomination	EURIO
On-Chain Denomination	`ueurio`
Decimal Precision	6
Module	`x/stablecoin`
Authority Model	Stablecoin authority address (mint/burn restricted)
Sovereign Reference	Euro (EUR)
Current Staking Model	Consensus staking restricted to uos
Current Fee Model	Exempt from ecosystem transaction fee

Supported Operations

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

Query Endpoints

CLI: heleosd query bank balances [address] --denom ueurio

CLI: heleosd query bank total-supply --denom ueurio

REST: GET /cosmos/bank/v1beta1/balances/{address}/by_denom?denom=ueurio

REST: GET /cosmos/bank/v1beta1/supply/by_denom?denom=ueurio

gRPC: cosmos.bank.v1beta1.Query/Balance with denom ueurio

gRPC: cosmos.bank.v1beta1.Query/SupplyOf with denom ueurio

Integration Path

EURIO is available for integration with Eurozone banking institutions through the StableNow platform. The integration process is identical to USDIO at the technical layer. Partner banks in Eurozone jurisdictions execute a Letter of Intent with Heleos, complete the StableNow integration, and begin tokenizing customer euro deposits as EURIO under their operational control.

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