I did not know that atomic transfers were already invented two years ago. Thanks for sharing.
Which coins were used to do the transfers and why is the technology not widely used today? This is a breakthrough and no one is giving it any attention or giving the developer any recognition.
The coins that already can be used for atomic swaps are Burst and Qora. At least the Qora client has even a GUI option for that (
see this article).
The reason I think it is not widely used is that both coins share a relatively similar codebase (they are Java coins inspired by NXT and use a smart contract platform called "Automated Transactions" for the atomic swap implementation) that is pretty different from the standard "Bitcoin clones" and Bitcoin/Script coins need an alternative implementation. Burst and Qora never were among the "top altcoins".
I think also the creator CIYAM deserves more credits for his breakthrough implementation. His solution is based on a concept invented by Sergio Demian Lerner and improved by Tier Nolan but it's the only implementation I know that is usable by non-technical users.
What a shame. All the credit should go where its due. But why did the Burst and Qora developers not try to develop it for NXT which was the most popular Java based platform at the time it was invented? I believe NEM is also written in Java.
They could have developed a symbiotic system in between each platform that could have aided all of them gain adoption.