/ˈvælɪd ˈsɪɡnətʃər/ – Phrase
Definition: chữ ký có giá trị pháp lý.
A more throughout explanation: A valid signature refers to a signature that meets the legal requirements for authenticity and authorization, typically including the signer’s intention to be bound by the document or agreement. It is a mark or sign made by a person on a document to indicate their acceptance, approval, or acknowledgment of its contents. A valid signature is essential for the enforceability of contracts and legal documents.
Example: The contract requires a valid signature from all parties involved in order to be legally binding.