Fast PoW payment feel
Payments run on the live network now.
Kaspa's design case
Answer
Crypto earns its keep when strangers need one shared record with no single operator. Kaspa's bet: Bitcoin-style Proof-of-WorkMiners spend computation to propose blocks. security can run closer to real time without trading away censorship resistance.
Start with the job
| Job | Angle | Status |
|---|---|---|
| Self-custodied money | Fair-launched Proof-of-Work UTXOUnspent transaction output. Value sits in separate coins, spent whole and replaced by new ones, instead of living in one account balance that gets edited. asset with wallet control. | Live |
| Fast payment feel | Ten blocks a second, in a blockDAGA graph where multiple honest blocks exist in parallel instead of a single forced line., beats a single-chain PoW block time. | Live, with confirmation tradeoffs |
| One shared record | GHOSTDAG orders parallel honest blocks in a DAG. | Live |
| Assets with rules | Toccata put spend rules, ZK hooks, sequencing commitments, and vProgs groundwork on-chain. | Covenant rules live on L1; wallet and app evidence next. See Programmability, below. |
| Group commitments | Base Real-Time Decentralization (RTD) today; TangVMA proposed add-on, not yet built, that would let a smart contract watch outside data and trigger itself instead of waiting for someone to trigger it by hand. and attestations later. | Base idea live; app systems still future work |
Why a public chain can't just be Visa-fast
Visa settles fast because nobody outside it checks its work. A public chain asks strangers to check the same rules with no one in charge: slow, but an app layer can outrun it.
Rare combination
What the other networks are already good at
Bitcoin leads on store-of-value track record, Ethereum on smart contracts, Solana on fast-app feel; Kaspa leads on none, its claim a combination none make: mined issuance, fixed supply, parallel blocks, app rules on one base layer.
Pick your constraint
Every design pays for its wins somewhere
No crypto design gets speed, security, privacy, and decentralization together; push on one and the cost lands elsewhere.
| Goal | Why people want it | What it costs |
|---|---|---|
| Decentralization | No easy single control point. | Harder upgrades, worse UX, slower agreement, more on you. |
| Security | Hard-to-fake history and valid supply. | Fees, power bills, staked capital, and a security budget that holds up. |
| Speed | Fast inclusion and better user feedback. | Blocks clash more, nodes get heavier, checks thin out, control narrows. |
| Privacy | Less watching. Every coin spends the same. | Heavier math, bigger data, harder to audit, fewer exchanges. |
| Self-custody | You hold the keys. No company account. | No password reset, no chargeback, no support line. |
Latency, inclusion, and confirmation
Bitcoin proved strangers can agree on scarce digital money with nobody in charge, paying for it with a slow block interval. Kaspa asks whether mining work a single chain throws away as a collision can count toward consensus.
Any fast chain gets a transaction into a block quickly: inclusion. That says nothing about confirmation, how fast the network gives confidence it won't reverse.
RTDHashdag's framing: Bitcoin-style PoW security operating in real time., HashdagKaspa co-founder Yonatan Sompolinsky's research writing site.'s term for this: see how GHOSTDAG colors and orders the graph.
How Bitcoin, Kaspa, Ethereum, and Solana split on this
less stake-vote coordination
Bitcoin slow inclusion, PoW confirmations
Kaspa fast inclusion, PoW confirmations
Ethereum PoS finality, committee sampling
Solana fast UX, stake-vote finality
faster inclusion
Try it
How long before a payment is safe to trust
A payment already sitting in a block can still be undone. Waiting is what closes that window, and the block count is not what measures it.
weak, 1%past the 50% line, 60%
how careful you want to be
A reorg is not paperwork. If the block carrying your payment gets replaced, the attacker can spend the same coins again elsewhere. That double-spend is what this wait protects against.
Safe means the attacker has lost the race to out-mine your payment, a chance that falls the longer you wait. Kaspa's separate finality rule blocks any reorg past 432,000 blocks (12 hours), no matter the attacker's share; how the two differ is in the model details below. Three chains, same three this site compares everywhere: Bitcoin and Litecoin as classic single-chain proof of work at different speeds, Kaspa as the fast blockDAG this site explains. Modeled from the Bitcoin whitepaper's confirmation-risk formula, not a live network feed.
The model, and where the Kaspa line is an approximation
Model. Nakamoto's whitepaper, section 11 (2008), a Poisson process. GHOSTDAG orders by accumulated work, not block count, so this single-chain formula is a stand-in that likely understates Kaspa's real security.
P(z) = 1 − ∑k=0z Poisson(k; λ)·(1 − (q/p)z−k), λ=z·q/p, q<p
Finality is different, not shown here. This site's twenty-chain dataset puts it at 432,000 blocks, 12 hours: past that, no reorganization, a fixed 43,200-second constant, not a proof like GHOSTDAG's k.
Programmability, by status
ToccataThe mainnet upgrade activated 30 June 2026 that let a coin carry enforceable spending rules, called covenants. activated at DAA score 474,165,565, roughly June 30, 2026: spend rules, asset rules, ZK checks, sequencing commitments.
UTXO rule design
Vault rules map onto outputs; wallets haven't caught up.
Shared sequencing thesis
Apps prove results back to Kaspa: roadmap.
The mechanism, what shipping a category takes, and where the case weakens
Covenant-style apps run as a controlled UTXO state machine, never a global account VM; Kaspa supplies no built-in custody, oracle terms, or liquidity. Toccata's rules are live on L1; DeFi, DAGKnight, vProgs, RTD-derived oracle, and TangVM stay roadmap or research. The case weakens if node costs rise or apps don't use the live rules.
Checklist
Check any coin, including this one
Check price last. KAS is the asset the network tracks, charges fees in, and pays as mining reward. Remove it, no network is left.
The ten questions, and why market cap misleads
Why does the token need to exist, specifically?
Could BTC, ETH, USDC, or a plain database do the same job?
Who pays the fees, and for what?
Who validates it, and how many independent parties can?
Who can change the rules, and under what process?
How did it launch: mined, sold, airdropped, or allocated?
Who got early supply, and are there unlocks still coming?
What pays for security once early incentives fade?
What part of the system is actually centralized?
What is the specific failure mode?
If removing the token stops the network, it's necessary; if a database could do the job, it's decoration. Market cap, price times supply, measures neither revenue nor what could sell before crashing price.
Sources, with what each backs
- Sompolinsky: Bitcoin Takeover S16 E41 (transcript), Oxford Union, Q&A, Mining the Internet, Uphold X Space, Kaspa Daily Q&A.
- Sutton: vProgs, Crescendo and DAGKnight; hashd.ag / raw.
- Bitcoin whitepaper, Ethereum, Solana, XRP, TRON, BNB.
- rusty-kaspa, releases, KIPs, Research.