Account Operations

---

account_create_operation (ID 20)

Auth: active of creator

Creates a new blockchain account. The fee is converted to SHARES for the new account.

Field	Type	Description
fee	asset (VIZ)	Creation fee ≥ chain account_creation_fee
delegation	asset (SHARES)	Initial SHARES delegation to new account
creator	account_name_type	Account paying the fee
new_account_name	account_name_type	Name for the new account
master	authority	Master authority
active	authority	Active authority
regular	authority	Regular authority
memo_key	public_key_type	Memo public key
json_metadata	string	JSON metadata (may be "")
referrer	account_name_type	Referrer account (may be "")
extensions	extensions_type	Always []

[20, {
  "fee": "1.000 VIZ",
  "delegation": "10.000000 SHARES",
  "creator": "alice",
  "new_account_name": "bob",
  "master":  { "weight_threshold": 1, "account_auths": [], "key_auths": [["VIZ5...", 1]] },
  "active":  { "weight_threshold": 1, "account_auths": [], "key_auths": [["VIZ5...", 1]] },
  "regular": { "weight_threshold": 1, "account_auths": [], "key_auths": [["VIZ5...", 1]] },
  "memo_key": "VIZ5...",
  "json_metadata": "",
  "referrer": "",
  "extensions": []
}]

• All three authorities are required (even if identical keys are used).
• fee.symbol must be VIZ; delegation.symbol must be SHARES.

---

account_update_operation (ID 5)

Auth: master of account (if master field present), otherwise active

Updates an account's keys and metadata.

Field	Type	Description
account	account_name_type	Account to update
master	optional<authority>	New master authority (omit if not changing)
active	optional<authority>	New active authority
regular	optional<authority>	New regular authority
memo_key	public_key_type	New memo key (required even if unchanged)
json_metadata	string	New JSON metadata

[5, {
  "account": "alice",
  "active": { "weight_threshold": 1, "account_auths": [], "key_auths": [["VIZ5new...", 1]] },
  "memo_key": "VIZ5new...",
  "json_metadata": "{\"profile\":\"updated\"}"
}]

• If master is present → sign with current master key.
• If master is absent → sign with current active key.
• memo_key is always required.

---

account_metadata_operation (ID 21)

Auth: regular of account

Updates only the account's JSON metadata. Lower bandwidth cost than account_update.

Field	Type	Description
account	account_name_type	Account to update
json_metadata	string	New JSON metadata string

[21, {
  "account": "alice",
  "json_metadata": "{\"name\":\"Alice\",\"about\":\"Hello!\"}"
}]

---

See also: Data Types, Operations Overview.