Automatic attribution is not easy but perhaps something can be worked out. Here I proposed to reduce the sats earn for the link post, splitting them with the author. A simple meta tag on the page can activate the sats forward.

Here I add: if the linked page is not already connected to SN all the sats are freezed until SN is able to pay the author. Consequentially the poster is highly incentivized to contact the author and convince him to join SN and add the meta, so he can withdraw his already owned sats, earn more in the future and help the community. All the parts win, included SN that can outsource the onboard work with this "smart contract" trick.

I suspect this pattern will improve the post quality too, reducing low effort posts.

My two sats :)