German Phrase
Das zeigt, wer's unterschrieben hat.
Meaning
Literally, ‘That shows who signed it.’ The sentence points out that something (e.g., a document, a signature) reveals the identity of the person who signed.
When to use
Use this phrase when you want to highlight evidence that makes the signer obvious, for example after spotting a signature on a paper or an electronic record.
✦Grammar Breakdown
Daszeigt,wer'sunterschriebenhat.
Verb zeigen (3rd person singular)
‘zeigt’ is the present tense, third‑person singular form of zeigen, meaning ‘to show’ or ‘to reveal’.
Contraction wer's
‘wer's’ is a spoken contraction of ‘wer es’, literally ‘who it’. It is common in informal German.
Present perfect with haben
‘unterschrieben hat’ is the perfect tense of unterschreiben (to sign) using the auxiliary ‘hat’.
Comma before a subordinate clause
German places a comma before the subordinate clause ‘wer's unterschrieben hat’.
🗨In Conversation
Schau dir das Formular an.
Take a look at the form.
Ja, das zeigt, wer's unterschrieben hat.
Yes, that shows who signed it.
✕Common Mistakes
Das zeigt, wer hat unterschrieben.
Missing the object ‘es’; the clause must be ‘wer es unterschrieben hat’ or the contracted ‘wer's’.
Das zeig, wer's unterschrieben hat.
Verb must be conjugated to match ‘das’ (3rd person singular).
Das zeigt, wer's unterschrieben haben.
The perfect tense uses ‘hat’, not ‘haben’, because ‘unterschreiben’ takes ‘haben’ as auxiliary only in 3rd person singular.
↔Alternatives
Das verrät, wer es unterschrieben hat.
That reveals who signed it.
Das macht deutlich, wer unterschrieben hat.
That makes clear who signed it.
Hier sieht man, wer unterschrieben hat.
Here you can see who signed.
Cultural Tip
The contraction ‘wer's’ is typical of spoken, informal German and is rarely used in formal writing. In a business email you would write ‘wer es unterschrieben hat’. Also, German prefers the verb ‘zeigen’ for visual evidence, while ‘verraten’ or ‘offenbaren’ can sound more figurative.

