HSK 6
证实
zhèngshí动
to confirm (sth to be true); to verify
录像证实他当时不在现场。
Lù xiàng zhèng shí tā dāng shí bú zài xiàn chǎng.
The video confirmed that he was not at the scene then.
Say it
Hold the button, say it, then let go.
Other HSK words sharing a character
Also free:
New in the HSK 3.0 word list at level 6.