Dual mining Kaspa and Canxium (KAS + CAU): how it works and what it brings

Dual mining (cross-mining) Kaspa and Canxium means that an ASIC miner on the kHeavyHash algorithm mines Kaspa (KAS) and, for the same work, you also receive a reward in the Canxium coin (CAU) – with no extra hardware and no higher power consumption. This works because since February 2025 the Canxium network has accepted blocks mined for Kaspa as proof of work. The CAU bonus is small, but free. Below we explain how it works, what we know about Canxium and which machines can mine it.

Summary

• Kaspa (KAS) is a proof-of-work coin using the kHeavyHash algorithm with very fast blocks.
• Canxium (CAU) allows “cross-chain mining” with Kaspa – support arrived with the go-canxium Helium v0.3.3 client (February 2025).
• The Kryptex pool launched KAS + CAU mining on 7 March 2025: it credits CAU according to your KAS earnings.
• On our hosting, Kaspa miners mine Kaspa only – we don't offer dual mining with Canxium there. You can mine KAS + CAU yourself via a pool that supports it (e.g. Kryptex).
• What matters is the income from Kaspa – CAU is just an add-on whose value depends on a small, illiquid market.

What is Kaspa

Kaspa (KAS) is a fast proof-of-work cryptocurrency using the kHeavyHash algorithm. Thanks to the GHOSTDAG protocol it processes blocks in parallel – since the Crescendo hard fork in May 2025 the network produces 10 blocks per second and transactions are confirmed within seconds. The maximum supply is roughly 28.7 billion KAS, and the block reward decreases every month so that it halves over a year.

What is Canxium

Canxium (CAU) is a smaller proof-of-work blockchain project that presents itself with the slogan “mining even offline”. Its authors emphasise flexible issuance: the number of new coins is supposed to follow how many miners and how much demand there is on the network, rather than a fixed schedule.

The key point for Kaspa miners is the link between the two networks. In December 2024 the Canxium team announced that mining together with Kaspa was technically feasible, and in February 2025 it released the Helium (v0.3.3) client version, which enables cross-chain mining with Kaspa. According to the project, this model is meant to keep rewards for miners going in the years ahead.

Older figures on CAU's market capitalisation and price that circulated in 2025 contradicted each other, so we don't quote them here. If you are interested in CAU as an investment, check the current price and liquidity on exchanges – and bear in mind that it is a very small project.

How dual mining Kaspa + Canxium works

The miner keeps mining Kaspa exactly as normal. A pool or hosting provider that supports cross-mining also passes the mined Kaspa blocks to the Canxium network, which pays a reward for them in CAU. The machine's power consumption and hashrate don't change.

For example, since 7 March 2025 the Kryptex pool has credited CAU every day at 6:00 UTC according to how much KAS you mined the previous day, and automatically converts CAU to BTC. Anyone already mining Kaspa on Kryptex didn't have to set anything up.

1. Choose a pool that supports KAS + CAU (our hosting does not offer dual mining).
2. Prepare a Kaspa wallet – you'll find instructions in the article Kaspa wallet in 2 minutes. Depending on the pool, you may also need a CAU address.
3. Point the miner to the pool and track payouts of both coins in the pool's dashboard.

Which miners to use

Any kHeavyHash ASIC is suitable. From our range, that's the IceRiver KS7 with 30 TH/s and a power draw of 3,500 W. Today 1 TH/s on Kaspa earns 3,55 Kč a day, so the KS7 mines around 107 CZK gross and consumes 84 kWh. With the cheapest hosting at 1,13 Kč/kWh, it keeps roughly 12 CZK a day (as of 18 October 2026) – so the CAU bonus is more of a nice extra than a reason to buy.

Older machines with poorer efficiency (hundreds of J/TH) don't cover their costs at today's difficulty, even with CAU. You'll find the full range in the Kaspa miners collection.

Dual mining and our hosting

On our hosting, Kaspa miners mine Kaspa only – we don't offer dual mining with Canxium there. If you want the CAU bonus, you have to run the miner yourself (at home, for example) and connect it to a pool that supports KAS + CAU. Electricity prices for each hosting location are listed on the hosting page.

Risks

• A small project. Canxium has a small community and low liquidity – it may not be easy to sell CAU rewards at a fair price.
• Income depends on Kaspa. If mining Kaspa doesn't pay, the CAU bonus won't save it.
• Rule changes. Cross-mining is a young technology; both the pool and the network may change the terms.

This article is not investment advice.

Sources

• Kryptex Pool: launch of KAS + CAU mining (7 March 2025)
• Canxium – official project blog (Helium v0.3.3, cross-mining with Kaspa)