Nov 7, 2021 · Kaspa is the fastest, open-source, decentralized & fully scalable Layer-1 in the world. single-second block intervals. Built by industry pioneers, led by the people. By integrating Topper, Uphold’s fiat-to-crypto onramp on the Kaspa.org site, the Kaspa community is now able to buy $KAS, the native currency of the network, on the site!