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53 lines
1.8 KiB
Markdown
53 lines
1.8 KiB
Markdown
# NeoGo state validation
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NeoGo supports state validation using N3 stateroots and can also act as state
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validator (run state validation service).
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All NeoGo nodes always calculate MPT root hash for data stored by contracts.
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Unlike in Neo Legacy, this behavior can't be turned off. They also process
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stateroot messages broadcasted through the network and save validated
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signatures from them if the state root hash specified there matches the one signed
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by validators (or shouts loud in the log if it doesn't because it should be
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the same).
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## State validation service
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The service is configured as `StateRoot` subsection of
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`ApplicationConfiguration` section in your node config.
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Parameters:
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* `Enabled`: boolean value, enables/disables the service, `true` for service
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to be enabled
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* `UnlockWallet`: service's wallet configuration:
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- `Path`: path to NEP-6 wallet.
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- `Password`: password for the account to be used by state validation
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node.
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### Example
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```
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StateRoot:
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Enabled: true
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UnlockWallet:
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Path: "/path/to/stateroot.wallet.json"
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Password: "knowyouare"
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```
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### Operation
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To run state validation service on your network you need to:
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* set state validation node keys in `RoleManagement` contract
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* configure and run an appropriate number of state validation nodes with the keys
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specified in `RoleManagement` contract
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## StateRootInHeader option
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NeoGo also supports protocol extension to include state root hashes right into
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header blocks. It's not compatible with regular Neo N3 state validation
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service and it's not compatible with public Neo N3 networks, but you can use
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it on private networks if needed.
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The option is `StateRootInHeader` and it's specified in
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`ProtocolConfiguration` section, set it to true and run your network with it
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(whole network needs to be configured this way then).
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