OpenAI: Dall-E: API Images have two hour download timer (link expires after two hours)

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Abstract painting of the ai singularity on the planet mars

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Images seem to expire?

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Yes, there is a two hour window to download and save:

<Error>
<Code>AuthenticationFailed</Code>
<Message>Server failed to authenticate the request. Make sure the value of Authorization header is formed correctly including the signature. RequestId:d0d06221-d01e-001a-4f79-265c6b000000 Time:2023-01-12T11:28:54.4156957Z</Message>
<AuthenticationErrorDetail>Signature not valid in the specified time frame: Start [Thu, 12 Jan 2023 04:40:28 GMT] - Expiry [Thu, 12 Jan 2023 06:40:28 GMT] - Current [Thu, 12 Jan 2023 11:28:54 GMT]</AuthenticationErrorDetail>
</Error>