This is the first implementation step of the proposal [“Uniting Acala & Karura to Support DotSama with aUSD Together”](https://acala.discourse.group/t/uniting-acala-karura-to-support-dotsama-with-ausd-together/740).

**Changes in this implementation proposal**

1. On-chain TokenRegistry pallet support for all native tokens including kUSD/aUSD. The TokenRegistry already supports non-native tokens (e.g. parachain assets like RMRK, MOVR, TAI) with metadata like Token Name, Token Symbol and Decimal Places
2. SDK support for kUSD change to aUSD (token symbol and related changes)
3. Karura DApp stablecoin related changes: kUSD change to aUSD (symbol, name, logo etc)
4. Karura DApp swap related changes: kUSD change to aUSD (symbol, name, logo etc)

**Note**: the currencyId (in a way equivalent to Smart Contract address on chains like Ethereum) will remain the same on-chain, and the token name and symbol change will be made in the on-chain TokenRegistry. You can think of it as USDC when issued on Ethereum would have a different contract address as USDC issued on another blockchain, but both are USDC.

**Actions Required from Integrators**
All parties integrating with kUSD shall update their software accordingly to reflect the token name and symbol change, which can be queried from on-chain TokenRegistry or using SDK.

**Actions Required from Users**
None.

**Expected Golive Date**
Estimated 6th Apr 2022 0200 to 0300 UTC
