Overview
Assets are classified into three tiers based on their liquidity. Tier assignments follow Coinbase International Exchange’s perpetual futures tier classification and determine:
Tier classification is based on the base currency of the underlying index. All underlyings sharing the same base currency belong to the same tier — for example, both BTC_USD and BTC_USDC are Tier 1.
PAXG is classified as Tier 2 on Starbase, differing from its Tier 3 classification on Coinbase International Exchange.
Tier 1
The most liquid assets. Tier 1 instruments have dedicated multicast channels and the highest allocated rate limits.
| Underlying |
|---|
| BTC_USD |
| BTC_USDC |
| ETH_USD |
| ETH_USDC |
Tier 2
Established assets with moderate liquidity. All altcoin options are Tier 2 regardless of the underlying’s tier.
| Underlying |
|---|
| ADA_USDC |
| AVAX_USDC |
| BCH_USDC |
| BNB_USDC |
| DOGE_USDC |
| DOT_USDC |
| LINK_USDC |
| LTC_USDC |
| NEAR_USDC |
| PAXG_USDC |
| SOL_USDC |
| TRX_USDC |
| UNI_USDC |
| XRP_USDC |
Tier 3
Lower-liquidity assets.
| Underlying |
|---|
| ALGO_USDC |
| BTCDVOL_USDC |
| TRUMP_USDC |
Tier Change Policy
Tier assignments determine which multicast channel an instrument belongs to, so changing a tier has operational consequences for trading clients. To give clients time to adjust:
- Tier changes are made only during planned deployments.
- Affected clients receive at least one week’s prior notice before any tier change takes effect.
