<p>I'm not sure about Ripple, but I know IOTA specifically uses each transaction to confirm the transactions around it. So instead of a dedicated miner, each user is essentially a "miner" for the short time they are making a transaction.</p>

CC BY-SA 3.0
2017-07-26T11:51:29.130Z
2017-07-26T11:51:29.130Z
Fumbles
<p>Stratis uses a mix of PoW/PoS
It started as PoW for mixed PoW/Pos for first few thousand blocks then only PoS</p>

<p>PoS = proof of stake and it's another consensus protocol
The concept is that you don't mine (you don't need to waste resources) but you mint, using your coin stake.</p>

<p>I'm not going into details, you can google about PoS, I just note that Stratis is implementing cold staking that improve the PoS minting.</p>

<p>Note that PoS involve anyway a target and someone that find the solution for that target, what it changes is the "how".
Consensus is applied at the same way, every node checks for conensus rules for every block it receives, so nothing changes except how and who generate a block.</p>

CC BY-SA 4.0
2018-11-13T16:51:27.883Z
2018-11-13T16:51:27.883Z
Not Important
<p>You need some way of coming to a consensus about the accepted transaction history. Proof-of-work is one mechanism which works robustly but requires a lot of resources. Proof-of-stake as used in some altcoins is related but less resource hungry. Ripple has a consensus algorithm that isn't completely trustless if I understand correctly. Byteballs (and some other coins) have a "tangle" instead of a chain, which eases the building of a consistent transaction history in the presence of network delays.</p>

CC BY-SA 3.0
2017-06-21T08:31:55.930Z
2017-06-21T08:31:55.930Z
Hans-Martin Mosner
<p>As far as I understand Ripple, every transaction you make you do the work to send and receive, which is like self serve supply the compute power required.</p>

CC BY-SA 3.0
2017-06-26T06:14:50.363Z
2017-06-26T06:14:50.363Z
Marcel
<p>NEM, Stratis, BitShares are 'non mineable' cryptocurrencies.</p>

<p>How do they verify transactions if there are no miners? Maybe nodes only? Or... what am I missing here?</p>

<p>I ask because I assume with a non mineable currency I believe miner fees, aka transaction fees, would be super low. Transactions would also clear faster. Like Ripple. Takes about 10 seconds to transfer XRP.</p>

<transactions><ripple><mining-theory><transaction-verification><bitshares>
How are 'Not Mineable ' cryptos able to verify transactions?
Marc Alexander
# How are 'Not Mineable ' cryptos able to verify transactions?

(Asked by: username_0 on 2017-06-21)

NEM, Stratis, BitShares are 'non mineable' cryptocurrencies.

How do they verify transactions if there are no miners? Maybe nodes only? Or... what am I missing here?

I ask because I assume with a non mineable currency I believe miner fees, aka transaction fees, would be super low. Transactions would also clear faster. Like Ripple. Takes about 10 seconds to transfer XRP.

**Tags:** transactions, ripple, mining-theory, transaction-verification, bitshares


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## 4 answers

### Answer by username_1 on 2017-07-26. Score: 2

I'm not sure about Ripple, but I know IOTA specifically uses each transaction to confirm the transactions around it. So instead of a dedicated miner, each user is essentially a "miner" for the short time they are making a transaction.


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### Answer by username_2 on 2018-11-13. Score: 0

Stratis uses a mix of PoW/PoS
It started as PoW for mixed PoW/Pos for first few thousand blocks then only PoS

PoS = proof of stake and it's another consensus protocol
The concept is that you don't mine (you don't need to waste resources) but you mint, using your coin stake.

I'm not going into details, you can google about PoS, I just note that Stratis is implementing cold staking that improve the PoS minting.

Note that PoS involve anyway a target and someone that find the solution for that target, what it changes is the "how".
Consensus is applied at the same way, every node checks for conensus rules for every block it receives, so nothing changes except how and who generate a block.


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### Answer by username_3 on 2017-06-21. Score: 0

You need some way of coming to a consensus about the accepted transaction history. Proof-of-work is one mechanism which works robustly but requires a lot of resources. Proof-of-stake as used in some altcoins is related but less resource hungry. Ripple has a consensus algorithm that isn't completely trustless if I understand correctly. Byteballs (and some other coins) have a "tangle" instead of a chain, which eases the building of a consistent transaction history in the presence of network delays.


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### Answer by username_4 on 2017-06-26. Score: -1

As far as I understand Ripple, every transaction you make you do the work to send and receive, which is like self serve supply the compute power required.


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