> For the complete documentation index, see [llms.txt](https://doc.greenmeta.biz/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://doc.greenmeta.biz/white-paper/pantanal-public-chain/ppoa-consensus-mechanism.md).

# PPOA Consensus Mechanism

The PPOA (Pantanal Proof of Authority) consensus mechanism is a self-developed consensus mechanism of the Pantanal public chain. It combines the advantages of the POA consensus mechanism and addresses the issue of distrust in the POA mechanism.

The PPOA consensus mechanism consists of 21 super nodes and N service nodes. Each super node is required to disclose information and must be elected as a super node through community voting. In the event of an unexpected interruption of a super node, a backup node takes its place, with super nodes rotating every 24 hours.

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