Terminology around token/denomination/ticker/symbol/decimals

[lukaw3d]

From slack:

• what are the correct terms for groups of these tokens: EUROe, TEST, ERC-20 EUROe (0x8A4826071983655805bF4f29828577Cd6b1aC0cB)?
• is EUROe: fees token?
• is TEST: consensus token?
• are [EUROe, TEST]: native tokens? native denominations? paratime tokens? paratime balances?
• is there a term non-fee tokens [TEST, [...]]?
• are [EUROe, ERC-20 EUROe]: both ERC-20 tokens? (i.e. is EUROe also ERC-20 internally?)

Jernej:

• EUROe and TEST are both exactly the same, they are sdk denominations; each of those can either be or not be a fee token. non-sdk denominations cannot be fee tokens.
• EUROe is also the native token inside the EVM (because EVM only supports a single native token). any sdk denomination can be a native token, but once set, it is not possible to change it without possibly breaking all smart contracts.
• ERC-20 EUROe I assume is just a deployed ERC-20 contract with the given name, nothing special.
• in the future it will be possible to map any sdk denomination to an ERC-20 as well (to special fixed addresses), but this is currently not the case.

[lukaw3d]

some code:

https://github.com/oasisprotocol/explorer/blob/b45547a7e2ebb88d7f8dc929ddd05863b5b56cbf/src/types/ticker.ts#L4-L14 https://github.com/oasisprotocol/explorer/blob/b45547a7e2ebb88d7f8dc929ddd05863b5b56cbf/src/config.ts#L22-L27 https://github.com/oasisprotocol/explorer/blob/b45547a7e2ebb88d7f8dc929ddd05863b5b56cbf/src/app/pages/ParatimeDashboardPage/ParaTimeSnapshot.tsx#L23-L24 https://github.com/oasisprotocol/explorer/blob/b45547a7e2ebb88d7f8dc929ddd05863b5b56cbf/src/app/components/Balance/hooks.ts#L53 https://github.com/oasisprotocol/explorer/blob/b45547a7e2ebb88d7f8dc929ddd05863b5b56cbf/src/app/components/Balance/hooks.ts#L7 https://github.com/oasisprotocol/explorer/blob/b45547a7e2ebb88d7f8dc929ddd05863b5b56cbf/src/app/components/RoundedBalance/__tests__/index.test.tsx#L40 https://github.com/oasisprotocol/explorer/blob/b45547a7e2ebb88d7f8dc929ddd05863b5b56cbf/src/app/utils/getRPCAccountBalances.ts#L37