Beam Mimblewimble is a scalable, fungible, and confidential cryptocurrency based on the Mimblewimble implementation. WHY BEAM? Core features include complete control over your privacy, All transactions are private by default, No addresses or other private information are stored on the blockchain, Superior scalability due to compact blockchain size, Opt-in Auditability, Support online and offline transactions, atomic swap, hardware wallets integration. Governance model No premine, No ICO. Backed by Treasury Establishing a non-profit foundation to govern the protocol after Mainnet launch How does it work? Wallets’ owners create new transaction using secure channel either online or offline Both wallets participate in signing the transaction using Schnorr protocol Wallet sends transaction to node Each transaction contains a list of Inputs and Outputs represented by Pedersen Commitments, as well as explicit fees and kernels. Each transaction also contains non-interactive zero knowledge range proof to verify that the output transaction value is positive Transaction is verified by the node Each transaction is verified with respect to the recent blockchain state which is stored as a Merkle Tree. The root hash of the tree is recorded in block header along with a proof of work. In addition, each node periodically creates compacted history to allow ‘fast sync’ of new and existing nodes. Transaction is added to the mining pool A block is mined every minute and is sent back to the node for verification and distribution. Mined blocks containing the new transactions are sent to the known peers A valid block that is extending the longest chain is accepted as a new Tip and propagated further until full consensus is reached. Fast sync When a new node connects to the network for the first time it can request compacted history containing only system state and blockchain headers. There is no need to retrieve the entire transaction history.
Zclassic is a fork of Zcash founded by Rhett Creighton but with the 20% founders’ reward and slow start removed. Miners are simply earning their fair reward, we believe they deserve it, and the coin development can be supported by the community. ZCL also differs from ZEC by removing the slow start (source), we are not trying to deliberately engineer scarcity: The Market decides the price. We are using the same parameters which were produced in the now famous secure 'trusted setup meeting' (source) where Peter Todd participated, and he confirmed to us (source) they are safe to use. If just one of the participants kept their key secret and destroyed it, the whole system is secure. Zcash is a cryptocurrency run by the Zero Coin Inc. In order to fund their operations, a 20% mining “Founder’s Reward” is included. Every block, in order to maintain consensus, miners running the Zcash code send 20% of their newly mined rewards to an address controlled by the Zero Coin Inc. Because the Zcash source code is open source, Zclassic simply removes the 20% Founder’s Reward. This gives people the option to mine a blockchain using the same technology of Zcash, but without paying the 20% Founder’s Reward. The mission of Zclassic is to stay as similar to Zcash from a technology perspective, but to never take any pre-mine, founder’s-reward or any other kind of fee that goes to a small group of individuals with special permissions whether elected, appointed, or otherwise.