Has quantum entanglement been proven?

Related questions

1. What is the fastest quantum computer?
2. How many states are in a qubit?
3. Why does quantum entanglement happen?
4. What does a quantum computer do?
5. Is RSA quantum safe?
6. Is a qubit an electron?
7. How many bits can a qubit hold?
8. How many qubits can be entangled?
9. What is qubit entanglement?
10. Why do quantum computers need to be cold?

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8. #proven
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14. #again
15. #years
16. #interaction