Kaspa is the fastest, open-source, decentralized & fully scalable Layer-1 in the world. The world’s first blockDAG- a digital ledger enabling parallel blocks and instant transaction confirmation, built on a robust proof-of-work engine with rapid single-second block intervals. The Kaspa implementation includes a lot of cool features and subprotocols including Reachability to query the DAG’s topology, Block data pruning (with near-future plans for block header pruning), SPV proofs, and later subnetwork support which will make future implementation of layer 2 solutions much easier.

Kaspa key features:

Fastest Transactions. Kaspa’s blockDAG network generates multiple blocks every second for posting transactions to the ledger. Combined with 10 second confirmation times makes Kaspa ideal for everyday transactions.
Instant Confirmation. Kaspa was designed to be hundreds of times faster than Bitcoin, with each Kaspa Transaction visable to the network in 1 second, and each transaction fully confirmed in 10 seconds on average.
Scalability. Kaspa solves the scalability problem with its ability to generate and confirm multiple blocks per second. This comes with no trade-off of security and decentralization as seen with Proof-of-Stake networks.
Efficient Proof-of-Work. Kaspa utilizes the optical-mining-ready kHeavyHash algorithm for consensus and security of the network. This algorithm, combined with high-throughput DAG and no-wasted-blocks, makes it less energy intensive than other PoW networks.
Security. Kaspa harnesses an ultra secure block network with no compromise to decentralization. Achieved with pure stake-less, proof-of-work combined with a revolutionary GhostDag Consensus mechanism.
BlockDAG. Overcoming the problem of blockchains, Kaspa processes all blocks in parallel linking all side-chains. This leads to a dag structure that increases the formation of blocks per second drastically, creating a blockDAG.