WhitelistedByZoneAttachmentConstraint - corda

corda / net.corda.core.contracts / WhitelistedByZoneAttachmentConstraint

# WhitelistedByZoneAttachmentConstraint

`object WhitelistedByZoneAttachmentConstraint : AttachmentConstraint`

An AttachmentConstraint that verifies that the hash of the attachment is in the network parameters whitelist. See: net.corda.core.node.NetworkParameters.whitelistedContractImplementations It allows for centralized control over the cordapps that can be used.

### Functions

#### isSatisfiedBy | Returns whether the given contract attachment can be used with the ContractState associated with this constraint object. `fun isSatisfiedBy(attachment: Attachment): Boolean`