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latestOpenAPI 3.0.0MIT2026-07-17124105392.5 KB

Cardano » Ledger

Blockchain genesis

Return the information about blockchain genesis.

get/genesis

Response

Return the genesis parameters.

active_slots_coefficientnumber required

The proportion of slots in which blocks should be issued

update_quoruminteger required

Determines the quorum needed for votes on the protocol parameter updates

max_lovelace_supplystring required

The total number of lovelace in the system

network_magicinteger required

Network identifier

epoch_lengthinteger required

Number of slots in an epoch

system_startinteger required

Time of slot 0 in UNIX time

slots_per_kes_periodinteger required

Number of slots in an KES period

slot_lengthinteger required

Duration of one slot in seconds

max_kes_evolutionsinteger required

The maximum number of time a KES key can be evolved before a pool operator must create a new operational certificate

security_paraminteger required

Security parameter k

Example response

{
  "active_slots_coefficient": 0.05,
  "update_quorum": 5,
  "max_lovelace_supply": "45000000000000000",
  "network_magic": 764824073,
  "epoch_length": 432000,
  "system_start": 1506203091,
  "slots_per_kes_period": 129600,
  "slot_length": 1,
  "max_kes_evolutions": 62,
  "security_param": 2160
}