Anatomy of a tumblr reblog link: (unique numbers made up)
In my RSS feed I have:
myblog.tumblr.com/post/85728493821
So its safe to say the 85... number is a unique post id
But what is the other code? (7vu4jf89)
The 2nd value differs for each reblog link, so its not just my unique identifier.
Arbitrary values do not work either.
I was thinking maybe its something Tumblr implemented specifically to prevent people from doing the sort of thing I'm attempting? Maybe its some sort of hash value combining my account identifier and the post?
Any insight is appreciated.
Ignoring the RSS part for the moment, I believe there are two official methods to achieve a working reblog link.
{ReblogButton} (http://www.tumblr.com/docs/en/custom_themes#like_and_reblog_buttons)In reply to your question about other code. I believe this is a unique, randomly generated key, the make up of which I am not 100% sure on. The key seems be unique per post and per site.
For example, if the original reblog key is 12345678 and the post is reblogged, a new key is generated for the site that reblogged the post.
Back to the RSS part, sadly as you have probably gathered, getting the reblog key inside the RSS feed by default is impossible. My advice would be to find the permalink in the RSS feed and use an API call to return the corresponding key for a reblog.