July 2021 In order to serialize/deserialize Gt elements and thanks to Aurore Guillevic, Cosmian added this implementation. Also, this eprint 2019-077 from Michael Scott give the same Gt verifications.
Novembre 2021 The crate is pusblished as cosmianbls12381 in 0.4.0 version. A Github-PR is made on bls12_381 original crate. In case of PR approval, the repository will be merged into the original one.