Kaspa Explained

Reference

Glossary

Every technical word this site uses, defined once, in at most a sentence or two. Where a word carries a number, the number is the status table's.

Anticone
The blocks a given block could not see and was not seen by; the ordering rule sorts these by blue work.
Block
A batch of payments with proof of work, pointing at several parents at once.
blockDAG
The web blocks form when each points at many parents; DAG is short for directed acyclic graph.
Blue block
A block well connected to the honest web, counted by the ordering rule.
Blue score
The count of blue blocks in a block's past; depth on Kaspa is measured in blue score.
Blue work
The proof of work carried by the blue blocks behind a block; the tiebreaker that picks the selected parent.
Coinbase
The first transaction in a block: it pays the miner the new coins plus the fees, and may carry the miner's name.
Covenant
A rule attached to a coin that miners enforce on every later spend of it.
DAA score
A steady counter of network time, rising about ten a second, used to date events like upgrades.
Finality depth (protocol)
432,000 blocks: the KIP-14 backstop depth, far beyond the depths used in practice.
GHOSTDAG
The rule that turns the block web into one agreed order; the shipped ordering rule.
Mass
A payment's weight for fee purposes; a simple payment is about 2,000 units, a block holds 500,000.
Mergeset
The blocks a chain block merges into the order: everything it saw that its selected parent had not.
Miner
Whoever races to write blocks; paid the coinbase of each block they win.
Parent
An earlier block a new block points at; up to 16 since Crescendo.
Pruning
Deleting old block bodies once the UTXO set and headers carry everything new payments need.
Red block
A block ordered late: weakly connected or hidden; its payments still count, it earns no reward.
Selected chain
The spine through the web made by following selected parents.
Selected parent
The parent with the most blue work behind it; each block names exactly one.
Sompi
The smallest unit of KAS; one KAS is 100,000,000 sompi. Fees are counted in sompi.
Tip
A current edge block: a block no newer block points at yet. The tips are the moving edge.
UTXO
An unspent transaction output: a coin, as the ledger actually stores it.
vProgs
A prototyped design for shared-state programs on Kaspa; not shipped.

Checked Nov 4, 2026.