'DigitalNote describes itself as a decentralized Proof-of-Work(bmw512)/Proof-of-Stake(echo512) hybrid blockchain with fast, untraceable transactions and encrypted messaging features. The network is reportedly resistant to 51% attacks via its VRX v3.0 technology and it is mobile-ready with lightweight wallet functionality. A masternode network reportedly enhances untraceability and provides incentive for users to secure the network, whilst enabling fast private transactions and P2P messaging that are difficult to trace or censor. Miners and stakers are encouraged to participate via network fee payouts, facilitating consistent block generation and a fast network. DigitalNote was originally released as ''duckNote'' by an anonymous individual or group of individuals under the pseudonym ''dNote'' in 2014. Over the years more advancements were added to the protocol, with each major upgrade rebranding the name of the protocol (first ''DarkNote'' and then ultimately ''DigitalNote''). Much like Bitcoin's ''Satoshi Nakamoto'', the original founder(s) vanished in 2017, leaving the open source code to be updated by a community team who have since continued development.'
The key to Space Chain is to deploy all blockchain nodes on satellites so as to bring blockchain technology into space, adding a new dimension to blockchain’s core concept of distributed ledger by making use of space technology and advantages of space resources. As a space blockchain platform featuring data collecting, computing, application and storage, Space Chain uses satellites as its blockchain nodes for realizing direct on-satellite data processing and secure in-space data storage through cryptographic technologies such as quantum communications. Different from ground-network-based blockchain technology, Space chain provides a broader coverage and is based on a network of LEO satellites for achieving broad-based connectivity so that anyone and anything could become the user of blockchain technology anywhere and anytime.