Every blockchain network faces the same problem. When a new computer joins the network, it must check that all the money records are correct. Most networks solve this in a slow and heavy way. Kaspa solves it in a different way, and that is the subject of this article.
A blockchain is a shared record book. Computers around the world, called nodes, hold copies of it and check every payment. More history means more work for each new computer that joins. Here is how five well-known networks handle that weight.
Bitcoin
Bitcoin started in January 2009. A new Bitcoin node must download and check every transaction made since then. That is 17 years of records, hundreds of gigabytes of data. A full check can take days.
Bitcoin nodes can delete old records after checking them. This saves disk space. But it only helps that one computer. The network as a whole still needs special "archive" nodes that keep the full history and send it to every newcomer. If nobody served the old blockchain data anymore, new computers could not independently verify Bitcoin from genesis. So Bitcoin stays safe, but only because some people agree to store everything forever.
Ethereum
Ethereum took another road. Most of its activity now happens on extra layers built on top of the main network, called rollups. This made Ethereum faster, but it also split users and money across many separate layers that do not talk to each other easily.
Ethereum also changed how it stores old data. In July 2025, the network let nodes delete all records from before September 2022. Each node saved 300 to 500 gigabytes of space. But the old data did not stop being needed. It moved to outside services - large companies, file-sharing systems and special data servers. Anyone who wants the old history must now ask those outside sources for it. In short, Ethereum did not remove the problem. It handed the problem to someone else.
Solana
Solana is very fast. That speed has a price, and the price is hardware. A serious Solana node in 2026 needs a powerful processor with 24 or more cores, around 256 to 512 gigabytes of memory, professional storage drives and a very fast internet line. A full setup can cost 15,000 to 50,000 dollars before it even starts running.
Storing the full Solana history is even harder. The network produces so much data that complete records sit almost only in large data centers. Regular people cannot check the network from home. Speed exists, but only big operators can verify it.
Cardano
Cardano keeps a careful, ordered design. It uses the same basic money model as Bitcoin, with some extra features for smart contracts. Payments behave in a predictable way, and the network avoids the traffic jams seen on Ethereum.
But Cardano makes blocks one at a time, about every 20 seconds. That keeps it slow compared with newer networks. Cardano still relies on historical blockchain data for full verification, although newer bootstrap methods can reduce the burden of syncing from scratch.
Kaspa
Kaspa uses the same proven money model as Bitcoin. But it produces 10 blocks every second, in parallel, and it deletes its own transaction history by default. New records older than about 30 hours are removed. Node operators can keep more if they want, but they do not have to.
How can a network delete its history and stay safe? Every Kaspa block carries a kind of fingerprint. This fingerprint is a short mathematical summary of all coins that exist at that moment. It is made with a method called MuHash, which can update the fingerprint with every new block without redoing all the work.
When a new computer joins Kaspa, it does not download years of records. It downloads a short chain of proof that connects today back to the very first block in 2021. Then it downloads the current list of coins and checks it against the fingerprint inside the blocks. If the fingerprint matches, the records are correct. No archive node is needed for a new node to verify the network and join securely. Historical archive nodes may still exist for explorers, analytics and research purposes.
One honest note. Kaspa security rests on standard mathematics, the same kind every blockchain depends on. Researchers in the Kaspa community openly discuss long-term questions, for example how these fingerprints should change in a future with quantum computers. That open discussion is healthy. Networks that depend on archive nodes carry their own long-term hope - that someone will keep paying to store everything, forever.
What It Adds Up To
Bitcoin asks every newcomer to relive 17 years. Ethereum moved its past to outside companies. Solana hid verification behind expensive machines. Cardano stayed careful but slow. Kaspa built the answer into the network itself. A new node can join in minutes, on a normal home computer, and still trust nothing but math.
History does not have to be a heavy bag the network carries. Sometimes a fingerprint is enough.