>>>>> "Charles" == Charles Eckel (eckelcu) <eckelcu@xxxxxxxxx> writes: Charles> Good question, Miao. Hackathon registration and Charles> participation is independent of the IETF meeting; however, Charles> we do make it clear in the registration and at the event Charles> that participation in the Hackathon is subject to the IETF Charles> Note Well. In addition to this, open source projects have Charles> their own governance and rules for contributing to Charles> them. These must be adhered to as well when code developed Charles> at the Hackathon is contributed into these projects. My understanding of copyright and the IETF note well is inconsistent with Mr. Fuyou's description though. In particular, typically ownership of the IETF contribution remains with the contributor, although the IETF is granted a rather broad non-exclusive license to the contribution.