### Proposal Part of https://github.com/prometheus/prometheus/issues/14217 Is blocked by: https://github.com/prometheus/prometheus/issues/14218 With https://github.com/prometheus/prometheus/issues/14218 we could use this information to put into [Remote-Write 2.0 `created_timestamp` proto field for specific series](https://github.com/prometheus/prometheus/blob/6673c346e9fc364d1a6218a5af4839ff624e3cfe/prompb/io/prometheus/write/v2/types.proto#L80). ### Acceptance Criteria * Prometheus adds CT to Remote-Write 2.0 requests when it can.