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21 lines
910 B
Markdown
21 lines
910 B
Markdown
---
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title: Coordinator
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layout: default
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nav_order: 3
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parent: Infrastructure
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---
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# Coordinator
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The coordinator is a local service which communicates with other validators'
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coordinators. It provides a verifiable broadcast layer for various consensus
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messages, such as agreement on external blockchains, key generation and signing
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protocols, and the latest Serai block.
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The verifiable broadcast layer is implemented via a blockchain, referred to as a
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Tributary, which is agreed upon using Tendermint consensus. This consensus is
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not as offered by Tendermint Core/CometBFT, as used in the Cosmos SDK
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(historically/presently), yet by our own implementation designed to be used as a
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library and not as another daemon. Tributaries are ephemeral, only used by the
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current validators, and deleted upon the next epoch. All of the results from it
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are verifiable via the external network and the Serai blockchain alone.
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