Well the fugitive who receives the coins can immediately move it to somewhere in their control. And the non fugitive knows that the fugitive won't touch the coi

Well the fugitive who receives the coins can immediately move it to somewhere in their control. And the non fugitive knows that the fugitive won't touch the coins because he can be outed by the non fugitive. I dunno. It's hare brained since I haven't thought through it, but a good setup can be made if physical meeting was a possibility. About the only way to anonymously exchange coins.