> For the complete documentation index, see [llms.txt](https://docs.carrchain.io/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.carrchain.io/products/integrations/token-gas.md).

# Token / Gas

**The native token of CarrChain is CARR**

**Decimals:** 18

The chain uses EIP-1559 so gas price will fluctuate based on network usage. There is a minimum gas price floor set to 0.01 gwei to keep the chain in a sustainable state. 

**Gas settings:**

Challenge period (Block):

* 600 Blocks (\~ 2 hours)

Block gas limit - maximum amount of gas that can be consumed by all of the transactions within a block:

* 32,000,000

Extra challenge period blocks Amount of time to wait before a challenge period expires.

* 200 blocks

Gas price floor - minimum gas price in gwei

* 0.01 gwei

Expected transaction costs for a simple ERC20 transfer or for an empty transaction (native token transfer) will stay under $0.01

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