Gravity: a blockchain-agnostic cross-chain communication and data oracles protocol. - Aleksei Pupyshev; Dmitry Gubanov; Elshan Dzhafarov; Ilya Sapranidi; Inal Kardanov; Vladimir Zhuravlev; Shamil Khalilov; Marc Jansen; Sten Laureyssens; Igor Pavlov; Sasha Ivanov (CoRR, 2020)