A committee member is an account that has certain privileges in relation to other accounts. Responsibilities of the committee member includes regulation of the operation of echo network and, in particular, bitcoin and ethereum sidechains. Also committee members are responsible for updating chain_parameters for correct network operation. Committee members also feed prices for bitassets.
The user, having an account in the network, has the right to register for the role of the committee member. To do this, use the wallet method create_committee_member that uses committee_member_create__operation. To register as committee member Ethereum address and Bitcoin public key are needed for sidechains. Also you need to have enough funds that will be frozen. The amount should be equal or greater than the value of
committee_frozen_balance_to_activate from chain_parameters.
In case of increasing of deposit amount committee should replenish committee frozen balance to the required amount in time of 10 *
maintenance_interval (parameter in chain_parameters) . If after this amount of time the balance has not been replenished committee member is excluded from the active committee. But if the balance is not replenished by 1/3 of the participants or more this period of time is extended by another day and so on until more than 2/3 of the participants have a required amount on the frozen balance. Recalculation occurs during maintenance.
Once a committee member has been created, any of the active committee can use the wallet method create_activate_committee_member_proposal that adding committee_member_activate_operation to proposal. For more info about proposals see Create and Processing Propose. It proposes to include the new candidate to the active committee. Should be approved by more than 2/3 of active committee members.
New active committee member is also starting to participate in sidechains regulation as well.
Active committee members can use the wallet method create_deactivate_committee_member_proposal that adding committee_member_deactivate_operation to proposal. The participant is excluded and becomes an inactive committee member if more than 2/3 members of activate committee added their approvals to proposal. Also deactivated committee member is removed from the sidechain regulation. Deactivated committee member will be able to withdraw frozen funds after the time in seconds specified in
committee_balance_unfreeze_duration_seconds in chain_parameters after deactivation.
If committee member want to withdraw excessive frozen balance he can do that with the help of wallet method committee_withdraw_balance that uses committee_frozen_balance_withdraw_operation. The main part of the balance can be withdrawn only after the time in seconds specified in
committee_balance_unfreeze_duration_seconds in chain_parameters after committee member left the committee for the last time. When you become an active committee member again, the countdown resets.
If as a result of the interval maintenance the chain parameter
committee_frozen_balance_to_activate has decreased, then committee member can remove the excess after the time specified by the chain parameter
committee_balance_unfreeze_duration_seconds using the operation committee_frozen_balance_withdraw_operation.