Privacy coins such as Monero and Zcash have made great strides and tremendous technological advances in the privacy realm, but are lacking on scalability and decentralization. Beam has gone a step further in reliability by offering audibility - with Monero or Zcash it is impossible to demonstrate a provable transaction graph to an external auditor, which is often needed for businesses. The ideas behind Mimblewimble protocol allow for creation of a coin that is confidential, scalable and optionally auditable.