Gulden is a second-generation peer-to-peer cryptocurrency which was created to provide a secure, simple and fast method of performing financial transactions between private individuals, customers & service providers and also corporate entities. Like many recent cryptocurrencies, the primary design criteria were to improve the security and usability of the currency and its underlying transaction authorisation technology (when compared to the original cryptocurrency - Bitcoin). The purpose of these changes was to simplify use and increase its adoption as a convenient, cheap and safe form of payment. The original initiative for this currency came from Rijk Plasman with the first working implementation released on the 4th April 2014. Initially called the “Gulden coin”, this was subsequently abbreviated in October 2015 to “Gulden”. The name Gulden comes from the German and Dutch term for “gold coin” and is the Dutch name of the Dutch guilder, the pre-euro currency of the Netherlands. Gulden Coin is the currency that enables the user to pay safely, conveniently and quickly. Moreover, it is a lucrative investment opportunity at the moment, considering that since entering the market in 2016 the developers have increased to a market capital of 39,883,259 USD with about 800,000 USD. The model of making cryptocurrencies accessible to ordinary consumers in the future holds enormous potential in the fintech sector.
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.