{
"$schema": "https://json-schema.org/draft/2020-12/schema",
"$id": "https://cardano.blockfrost.io/schema/epoch_param_content",
"title": "Epoch Param Content",
"type": "object",
"properties": {
"epoch": {
"type": "integer",
"example": 225,
"description": "Epoch number"
},
"min_fee_a": {
"type": "integer",
"example": 44,
"description": "The linear factor for the minimum fee calculation for given epoch"
},
"min_fee_b": {
"type": "integer",
"example": 155381,
"description": "The constant factor for the minimum fee calculation"
},
"max_block_size": {
"type": "integer",
"example": 65536,
"description": "Maximum block body size in Bytes"
},
"max_tx_size": {
"type": "integer",
"example": 16384,
"description": "Maximum transaction size"
},
"max_block_header_size": {
"type": "integer",
"example": 1100,
"description": "Maximum block header size"
},
"key_deposit": {
"type": "string",
"example": "2000000",
"description": "The amount of a key registration deposit in Lovelaces"
},
"pool_deposit": {
"type": "string",
"example": "500000000",
"description": "The amount of a pool registration deposit in Lovelaces"
},
"e_max": {
"type": "integer",
"example": 18,
"description": "Epoch bound on pool retirement"
},
"n_opt": {
"type": "integer",
"example": 150,
"description": "Desired number of pools"
},
"a0": {
"type": "number",
"example": 0.3,
"description": "Pool pledge influence"
},
"rho": {
"type": "number",
"example": 0.003,
"description": "Monetary expansion"
},
"tau": {
"type": "number",
"example": 0.2,
"description": "Treasury expansion"
},
"decentralisation_param": {
"type": "number",
"example": 0.5,
"description": "Percentage of blocks produced by federated nodes"
},
"extra_entropy": {
"type": "string",
"nullable": true,
"example": null,
"description": "Seed for extra entropy"
},
"protocol_major_ver": {
"type": "integer",
"example": 2,
"description": "Accepted protocol major version"
},
"protocol_minor_ver": {
"type": "integer",
"example": 0,
"description": "Accepted protocol minor version"
},
"min_utxo": {
"type": "string",
"example": "1000000",
"description": "Minimum UTXO value. Use `coins_per_utxo_size` for Alonzo and later eras",
"deprecated": true
},
"min_pool_cost": {
"type": "string",
"example": "340000000",
"description": "Minimum stake cost forced on the pool"
},
"nonce": {
"type": "string",
"example": "1a3be38bcbb7911969283716ad7aa550250226b76a61fc51cc9a9a35d9276d81",
"description": "Epoch number only used once"
},
"cost_models": {
"additionalProperties": true,
"type": "object",
"nullable": true,
"deprecated": true,
"example": {
"PlutusV1": {
"addInteger-cpu-arguments-intercept": 197209,
"addInteger-cpu-arguments-slope": 0
},
"PlutusV2": {
"addInteger-cpu-arguments-intercept": 197209,
"addInteger-cpu-arguments-slope": 0
}
},
"description": "Cost models parameters for Plutus Core scripts. Deprecated, use `cost_models_raw` instead."
},
"cost_models_raw": {
"additionalProperties": true,
"type": "object",
"nullable": true,
"example": {
"PlutusV1": [
100788,
420,
1,
1,
1000,
173,
0,
1,
1000,
59957,
4,
1,
11183,
32,
201305,
8356,
"..."
],
"PlutusV2": [
100788,
420,
1,
1,
1000,
173,
0,
1,
1000,
59957,
4,
1,
11183,
32,
201305,
8356,
"..."
],
"PlutusV3": [
100788,
420,
1,
1,
1000,
173,
0,
1,
1000,
59957,
4,
1,
11183,
32,
201305,
8356,
"..."
]
},
"description": "Cost models parameters for Plutus Core scripts in raw list form"
},
"price_mem": {
"type": "number",
"nullable": true,
"example": 0.0577,
"description": "The per word cost of script memory usage"
},
"price_step": {
"type": "number",
"nullable": true,
"example": 7.21e-05,
"description": "The cost of script execution step usage"
},
"max_tx_ex_mem": {
"type": "string",
"nullable": true,
"example": "10000000",
"description": "The maximum number of execution memory allowed to be used in a single transaction"
},
"max_tx_ex_steps": {
"type": "string",
"nullable": true,
"example": "10000000000",
"description": "The maximum number of execution steps allowed to be used in a single transaction"
},
"max_block_ex_mem": {
"type": "string",
"nullable": true,
"example": "50000000",
"description": "The maximum number of execution memory allowed to be used in a single block"
},
"max_block_ex_steps": {
"type": "string",
"nullable": true,
"example": "40000000000",
"description": "The maximum number of execution steps allowed to be used in a single block"
},
"max_val_size": {
"type": "string",
"nullable": true,
"example": "5000",
"description": "The maximum Val size"
},
"collateral_percent": {
"type": "integer",
"nullable": true,
"example": 150,
"description": "The percentage of the transactions fee which must be provided as collateral when including non-native scripts"
},
"max_collateral_inputs": {
"type": "integer",
"nullable": true,
"example": 3,
"description": "The maximum number of collateral inputs allowed in a transaction"
},
"coins_per_utxo_size": {
"type": "string",
"nullable": true,
"example": "34482",
"description": "Cost per UTxO word for Alonzo. Cost per UTxO byte for Babbage and later."
},
"coins_per_utxo_word": {
"type": "string",
"nullable": true,
"example": "34482",
"deprecated": true,
"description": "Cost per UTxO word for Alonzo. Cost per UTxO byte for Babbage and later."
},
"pvt_motion_no_confidence": {
"type": "number",
"nullable": true,
"description": "Pool Voting threshold for motion of no-confidence."
},
"pvt_committee_normal": {
"nullable": true,
"type": "number",
"description": "Pool Voting threshold for new committee/threshold (normal state)."
},
"pvt_committee_no_confidence": {
"nullable": true,
"type": "number",
"description": "Pool Voting threshold for new committee/threshold (state of no-confidence)."
},
"pvt_hard_fork_initiation": {
"nullable": true,
"type": "number",
"description": "Pool Voting threshold for hard-fork initiation."
},
"dvt_motion_no_confidence": {
"nullable": true,
"type": "number",
"description": "DRep Vote threshold for motion of no-confidence."
},
"dvt_committee_normal": {
"nullable": true,
"type": "number",
"description": "DRep Vote threshold for new committee/threshold (normal state)."
},
"dvt_committee_no_confidence": {
"nullable": true,
"type": "number",
"description": "DRep Vote threshold for new committee/threshold (state of no-confidence)."
},
"dvt_update_to_constitution": {
"nullable": true,
"type": "number",
"description": "DRep Vote threshold for update to the Constitution."
},
"dvt_hard_fork_initiation": {
"nullable": true,
"type": "number",
"description": "DRep Vote threshold for hard-fork initiation."
},
"dvt_p_p_network_group": {
"nullable": true,
"type": "number",
"description": "DRep Vote threshold for protocol parameter changes, network group."
},
"dvt_p_p_economic_group": {
"nullable": true,
"type": "number",
"description": "DRep Vote threshold for protocol parameter changes, economic group."
},
"dvt_p_p_technical_group": {
"nullable": true,
"type": "number",
"description": "DRep Vote threshold for protocol parameter changes, technical group."
},
"dvt_p_p_gov_group": {
"nullable": true,
"type": "number",
"description": "DRep Vote threshold for protocol parameter changes, governance group."
},
"dvt_treasury_withdrawal": {
"nullable": true,
"type": "number",
"description": "DRep Vote threshold for treasury withdrawal."
},
"committee_min_size": {
"type": "string",
"nullable": true,
"description": "Minimal constitutional committee size."
},
"committee_max_term_length": {
"type": "string",
"nullable": true,
"description": "Constitutional committee term limits."
},
"gov_action_lifetime": {
"type": "string",
"nullable": true,
"description": "Governance action expiration."
},
"gov_action_deposit": {
"type": "string",
"nullable": true,
"description": "Governance action deposit."
},
"drep_deposit": {
"type": "string",
"nullable": true,
"description": "DRep deposit amount."
},
"drep_activity": {
"type": "string",
"nullable": true,
"description": "DRep activity period."
},
"pvtpp_security_group": {
"type": "number",
"nullable": true,
"deprecated": true,
"description": "Pool Voting threshold for security-relevant protocol parameters changes. Renamed to pvt_p_p_security_group."
},
"pvt_p_p_security_group": {
"type": "number",
"nullable": true,
"description": "Pool Voting threshold for security-relevant protocol parameters changes."
},
"min_fee_ref_script_cost_per_byte": {
"type": "number",
"nullable": true
}
},
"required": [
"epoch",
"min_fee_a",
"min_fee_b",
"max_block_size",
"max_tx_size",
"max_block_header_size",
"key_deposit",
"pool_deposit",
"e_max",
"n_opt",
"a0",
"rho",
"tau",
"decentralisation_param",
"extra_entropy",
"protocol_major_ver",
"protocol_minor_ver",
"min_utxo",
"min_pool_cost",
"nonce",
"cost_models",
"price_mem",
"price_step",
"max_tx_ex_mem",
"max_tx_ex_steps",
"max_block_ex_mem",
"max_block_ex_steps",
"max_val_size",
"collateral_percent",
"max_collateral_inputs",
"coins_per_utxo_size",
"coins_per_utxo_word",
"pvt_motion_no_confidence",
"pvt_committee_normal",
"pvt_committee_no_confidence",
"pvt_hard_fork_initiation",
"dvt_motion_no_confidence",
"dvt_committee_normal",
"dvt_committee_no_confidence",
"dvt_update_to_constitution",
"dvt_hard_fork_initiation",
"dvt_p_p_network_group",
"dvt_p_p_economic_group",
"dvt_p_p_technical_group",
"dvt_p_p_gov_group",
"dvt_treasury_withdrawal",
"committee_min_size",
"committee_max_term_length",
"gov_action_lifetime",
"gov_action_deposit",
"drep_deposit",
"drep_activity",
"pvtpp_security_group",
"pvt_p_p_security_group",
"min_fee_ref_script_cost_per_byte"
]
}