Kaspa is a proof-of-work cryptocurrency that replaces the traditional blockchain with a blockDAG (Directed Acyclic Graph) structure. Instead of discarding valid blocks that don't make it into the canonical chain — as Bitcoin does — Kaspa incorporates every valid block into its ledger. This fundamental design change allows Kaspa to achieve significantly higher throughput and faster confirmation times while preserving the security guarantees of proof-of-work.
Kaspa was created by Yonatan Sompolinsky, a computer scientist and one of the co-authors of the GHOSTDAG protocol. GHOSTDAG (the Greedy Heaviest-Observed Sub-Tree DAG) is the academic protocol that underpins Kaspa's consensus mechanism. Sompolinsky's work on DAG-based consensus is widely cited in blockchain research and represents a serious academic contribution to the field of distributed ledger technology.
The project launched without any corporate backing, venture capital funding, or pre-allocated founder tokens — a genuinely fair-start cryptocurrency.
Traditional blockchains (like Bitcoin and Ethereum) organize blocks into a single chain. When two miners produce a valid block at nearly the same time, one is orphaned and discarded. This creates waste and limits throughput.
Kaspa's blockDAG solves this by allowing all valid blocks to coexist. The GHOSTDAG consensus algorithm orders them into a total linear order, even though they form a DAG structure. This means:
Kaspa uses the kHeavyHash mining algorithm, which is a modified version of the HeavyHash algorithm. It is designed to be ASIC-resistant but ASIC-friendly — meaning specialized hardware exists and is efficient, but the algorithm resists dominance by a single type of ASIC. Current ASIC miners include the Bitmain KS5 series and IceRiver KS series.
Kaspa had no premine, no initial coin offering (ICO) and no venture capital allocation. Every single KAS token in circulation has been mined through proof-of-work. This makes Kaspa one of the most genuinely decentralized cryptocurrencies in existence, comparable to Bitcoin in its fairness of distribution.
After the Crescendo upgrade, Kaspa operates at 1 block per second. The network is now preparing for 10 blocks per second and eventually 100 blocks per second, which would make it one of the fastest proof-of-work networks ever built.
Kaspa's blockDAG does not sacrifice security for speed. The GHOSTDAG protocol provides the same security guarantees as Bitcoin's longest-chain rule but with much higher capacity. Because every valid block is included, attackers face the same hash power requirements to reorganize the ledger.
As of June 2026, Kaspa's network hash rate continues to grow, with a thriving mining ecosystem of both individual miners and industrial-scale operations.
For a deeper comparison, see our Kaspa vs Bitcoin guide.