> For the complete documentation index, see [llms.txt](https://smart-finance-4.gitbook.io/smart-finance-white-paper/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://smart-finance-4.gitbook.io/smart-finance-white-paper/3.-smart-finance-development-plan/3.1-the-grand-genesis-phase/3.1.2-contribution-proof-and-mining-methods/fission-hash-unit.md).

# Fission hash unit

A mining node can get 0.5 of the total deposit hash units of the directly linked nodes. This part belongs to fission hash units.

The mining node gets 0.1 of the total deposit hash units of the secondary nodes (a total of 9 layers in the network). This part belongs to fission hash units.

For each N times increase in the total deposit hash units of all linked nodes, 0.02*N is credited as fission hash units, with two conditions: Condition 1: 0.02*N < 0.2, Condition 2: the maximum fission hash units of linked nodes are removed when calculating.