Check Multi-Signature Security

1. Overview & Typical Use

Returns an account’s multi-signature configuration, including owner permissions, active permissions, and the addresses granted each permission type.

Typical use: multi-sig account security audit, permission configuration check, malicious multi-sig detection.
When not to use: to check approval security use “Check Account Approval Security”; for basic account information use “Get Account Details”.

GET /api/security/sign/data

For Base URL and authentication, see Common Network & Authentication.

Parameter	Type	Required	Default	Description
`address`	string	Yes	—	Account address to check

Top-level

Field	Type	Required	Description	Unit/Precision
`multiSign`	boolean	Required	Whether multi-signature is enabled	—
`multiSignOwnerPermissionAddress`	array	Required	Addresses granted owner permission	—
`multiSignActivePermissionAddress`	array	Required	Addresses granted active permission	—
`multiSignWitnessPermissionAddress`	array	Required	Addresses granted witness permission	—
`activePermissions`	array	Required	Active permission details; empty array when multi-sig is not enabled	—
`ownerPermission`	object	Optional	Owner permission details; only present when `multiSign: true`	—

ownerPermission object

Field	Type	Required	Description	Unit/Precision
`permission_name`	string	Required	Permission name	—
`threshold`	integer	Required	Signature threshold	—
`keys`	array	Required	Address + weight list	—

activePermissions[] elements

Field	Type	Required	Description	Unit/Precision
`id`	integer	Required	Permission ID	—
`type`	string	Required	Permission type	—
`permission_name`	string	Required	Permission name	—
`threshold`	integer	Required	Signature threshold	—
`operations`	string	Required	Allowed operations bitmap	Hexadecimal
`keys`	array	Required	Address + weight list	—

For HTTP status codes, see Common Errors. Key points for this endpoint:

When address does not have multi-sig enabled, multiSign returns false and all other fields are empty arrays.