An epoch is a unit of time when validators of the network remain constant. It is measured in blocks:
Note: Nodes garbage collect blocks after 5 epochs (~2.5 days) unless they are archival nodes.
See Also
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"jsonrpc": "2.0",
"result": {
"protocol_version": 44,
"genesis_time": "2020-07-21T16:55:51.591948Z",
"chain_id": "mainnet",
"genesis_height": 9820210,
"num_block_producer_seats": 100,
"num_block_producer_seats_per_shard": [
100
],
"avg_hidden_validator_seats_per_shard": [
0
],
"dynamic_resharding": false,
"protocol_upgrade_stake_threshold": [
4,
5
],
"epoch_length": 43200,
"gas_limit": 1000000000000000,
"min_gas_price": "1000000000",
"max_gas_price": "10000000000000000000000",
"block_producer_kickout_threshold": 90,
"chunk_producer_kickout_threshold": 90,
// ---- snip ----
}
You can learn more about how epochs are used to manage network validation in the Validator FAQ.
