Or upload an encrypted version of the file or just a hash of the figure ahead of time? Then release the descrypt key later or when the figure is published, you can point to the hash which was uploaded publicly a long time ago?
We called it Assembl Chronos. It’s now available here at https://provenance.cerebrum.com. Please give it a try, I’d love to hear your thoughts :)
(More info: https://www.prnewswire.com/news-releases/assembl-chronos-a-b...)