---
source: crates/aiken-lang/src/tests/format.rs
description: "Code:\n\nvalidator direct_proxy {\n  mint(_redeemer: Void, policy_id: PolicyId, self: Transaction) {\n    list.any(\n      self.certificates,\n      fn(certificate) {\n        when certificate is {\n          RegisterDelegateRepresentative {\n            delegate_representative: credential,\n            ..\n          } | UnregisterDelegateRepresentative {\n            delegate_representative: credential,\n            ..\n          } | RegisterCredential { credential, .. } | UnregisterCredential {\n            credential,\n            ..\n          } | RegisterAndDelegateCredential { credential, .. } ->\n            credential == Script(policy_id)\n          _ -> False\n        }\n      },\n    )\n  }\n}\n"
---
validator direct_proxy {
  mint(_redeemer: Void, policy_id: PolicyId, self: Transaction) {
    list.any(
      self.certificates,
      fn(certificate) {
        when certificate is {
          RegisterDelegateRepresentative {
            delegate_representative: credential,
            ..
          } | 
          UnregisterDelegateRepresentative {
            delegate_representative: credential,
            ..
          } | 
          RegisterCredential { credential, .. } | 
          UnregisterCredential { credential, .. } | 
          RegisterAndDelegateCredential { credential, .. } ->
            credential == Script(policy_id)
          _ -> False
        }
      },
    )
  }

  else(_) {
    fail
  }
}