# State The transfer IBC application module keeps state of the port to which the module is binded and the denomination trace information as outlined in [ADR 01](./../../../../../docs/architecture/adr-001-coin-source-tracing.md). - `Port`: `0x01 -> ProtocolBuffer(string)` - `DenomTrace`: `0x02 | []bytes(traceHash) -> ProtocolBuffer(DenomTrace)`