<h3>Protocol Parameters</h3>
<p>A few <a href="https://cips.cardano.org/cips/cip9/" rel="nofollow noreferrer">protocol parameters</a>' sole purpose is to prevent over-centralization of stake. These include:</p>
<ul>
<li><p>k (or nOpt) - a.k.a. the pool saturation limit. This disincentivizes over-delegation to any one pool by lowering total pool rewards after a high enough delegation. This limit is calculated by (Total circulating supply / k ), per pool. Increasing k thus encourages stake distribution across more pools. However, when this happens pool operators may &quot;split&quot; their pool into multiple pools. To combat this, we have the following parameter:</p>
</li>
<li><p>a0 - a.k.a. the pledge influence factor. This parameter dictates the effect an operator's pledge has on their pool's rewards (higher pledge = higher rewards). Currently, there is a linear relationship between pledge and pool rewards, but <a href="https://cips.cardano.org/cips/cip7/" rel="nofollow noreferrer">CIP-7</a> will soon change this to an n-curve to compensate for the unnecessary advantage it gives to pools with very high pledge (&gt;5M).</p>
</li>
</ul>
<h3>Community and Active Participation</h3>
<p>Apart from first-order incentive structures as outlined above, decentralization is also encouraged throughout the community at a pedagogical level. A combination of great documentation, peer-to-peer style learning, and a shared vision creates a kind of communal &quot;ethos&quot;, in which decentralization is a high priority. For example, here is a <a href="https://iohk.io/en/blog/posts/2020/11/13/the-general-perspective-on-staking-in-cardano/" rel="nofollow noreferrer">great blog post</a> by IOG's Chief Scientist Aggelos Kiayias outlining what all participants can do to help maintain healthy decentralization.</p>
<p>Additionally, there are many sub-communities within Cardano building on and addressing different problems, decentralization being one of them. For example, the <a href="https://singlepoolalliance.net/" rel="nofollow noreferrer">Cardano Single Pool Alliance</a> is a loose cohort of single SPO's who've committed to operating no more than one stake pool on the network. There is also the <a href="https://cardanobaremetal.com/" rel="nofollow noreferrer">Cardano Bare Metal Alliance</a>; SPO's committed to running their nodes on their own hardware (as opposed to cloud infrastructure) to prevent too much of the network from aggregating in large data centers.</p>
<p>Ultimately, it is education and awareness that goes furthest in promoting decentralization, because <strong>decentralization itself is much deeper topic than simply the distribution of block production</strong>. I expand on this further in <a href="https://cardano.stackexchange.com/questions/6627/are-single-stakepools-losing/6655#6655">this post</a>.</p>

CC BY-SA 4.0
2022-01-25T16:25:04.080Z
2022-02-01T00:00:06.967Z
2022-02-01T00:00:06.967Z
zhekson
<p>One of the core goals of any L1 cryptocurrency is to ensure decentralization of its consensus mechanism (<em>proof-of-stake</em>, <em>proof-of-work</em>, etc.).  For Cardano that is the number of independent Stake Pool Operators (SPOs)</p>
<p>What have the Cardano community and the Cardano protocol implemented to discourage the pool of SPOs from evolving into a large number of staking nodes operated by a few large SPOs?</p>

<stake-pool>
What mechanisms are in place encourage decentralization and to deter centralization of stake pools?
# What mechanisms are in place encourage decentralization and to deter centralization of stake pools?

(Asked by: username_0 on 2022-01-24)

One of the core goals of any L1 cryptocurrency is to ensure decentralization of its consensus mechanism (*proof-of-stake*, *proof-of-work*, etc.). For Cardano that is the number of independent Stake Pool Operators (SPOs)

What have the Cardano community and the Cardano protocol implemented to discourage the pool of SPOs from evolving into a large number of staking nodes operated by a few large SPOs?

**Tags:** stake-pool

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## 1 answers

### Answer by username_1 on 2022-01-25. Score: 2 | Accepted answer

### Protocol Parameters

A few [protocol parameters](https://cips.cardano.org/cips/cip9/)' sole purpose is to prevent over-centralization of stake. These include:

* k (or nOpt) - a.k.a. the pool saturation limit. This disincentivizes over-delegation to any one pool by lowering total pool rewards after a high enough delegation. This limit is calculated by (Total circulating supply / k ), per pool. Increasing k thus encourages stake distribution across more pools. However, when this happens pool operators may "split" their pool into multiple pools. To combat this, we have the following parameter:
* a0 - a.k.a. the pledge influence factor. This parameter dictates the effect an operator's pledge has on their pool's rewards (higher pledge = higher rewards). Currently, there is a linear relationship between pledge and pool rewards, but [CIP-7](https://cips.cardano.org/cips/cip7/) will soon change this to an n-curve to compensate for the unnecessary advantage it gives to pools with very high pledge (>5M).

### Community and Active Participation

Apart from first-order incentive structures as outlined above, decentralization is also encouraged throughout the community at a pedagogical level. A combination of great documentation, peer-to-peer style learning, and a shared vision creates a kind of communal "ethos", in which decentralization is a high priority. For example, here is a [great blog post](https://iohk.io/en/blog/posts/2020/11/13/the-general-perspective-on-staking-in-cardano/) by IOG's Chief Scientist Aggelos Kiayias outlining what all participants can do to help maintain healthy decentralization.

Additionally, there are many sub-communities within Cardano building on and addressing different problems, decentralization being one of them. For example, the [Cardano Single Pool Alliance](https://singlepoolalliance.net/) is a loose cohort of single SPO's who've committed to operating no more than one stake pool on the network. There is also the [Cardano Bare Metal Alliance](https://cardanobaremetal.com/); SPO's committed to running their nodes on their own hardware (as opposed to cloud infrastructure) to prevent too much of the network from aggregating in large data centers.

Ultimately, it is education and awareness that goes furthest in promoting decentralization, because **decentralization itself is much deeper topic than simply the distribution of block production**. I expand on this further in [this post](https://cardano.stackexchange.com/questions/6627/are-single-stakepools-losing/6655#6655).


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