BLAP picks have no standard release time and have been sent from before 5am to midnight PT. I generally do not check availability as they sent. I do review most of them sometime during the day.
Anyone with access to a broad line history (typically 9 or 10 books are used for betting lines by BLAP), can easily post the side and total line history at various books after the pick is graded and posted. I post the pick's date and time (to the minute) that I receive the text & email. If anyone posts a line history that shows a pick was in error, I will gladly re-grade it.
IN-PROGRESS, PROPS, FUTURES and RSW picks are much harder to verify and may move fast when first released.
Steamed lines can be detected since if a line is moving fast just before or just after a release, and unfortunately the pick won't be readily available to bet.