# Node Fusion

Node Fusion is a core mechanic that allows you to combine **two existing nodes into a single, more powerful node of a higher tier.** 

#### Fusion Rules

To perform a fusion, you must meet several specific requirements:

You must fuse two nodes **of the same tier to create one node of the next higher tier.**

Neither node can be currently deployed in a datacenter or undergoing an extraction cooldown.

Superior tier nodes **cannot** be fused because they already represent the highest possible tier in the system.

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#### Fusion Costs

Fusion requires the payment of $HASH tokens. The cost doubles with each subsequent tier level:

• **Common to Uncommon:** 2,000 $HASH

• **Uncommon to Rare:** 4,000 $HASH

• **Rare to Ultra:** 8,000 $HASH

• **Ultra to Superior:** 16,000 $HASH

#### Skill Slot Preservation

{% hint style="warning" %}
A critical rule for fusion is that **both nodes must have the same number of passive skills** to be eligible.
{% endhint %}

The resulting fused node will retain the same number of skill slots as its "parent" nodes. While the number of slots is preserved, the actual skills are not.&#x20;

All skills are randomized (re-rolled), and their power levels are adjusted to match the ranges of the new, higher tier.

#### Fusion Randomness

The properties of the newly created node are determined using the platform's [provably fair on-chain randomness system.](https://docs.hashed.tech/how-to-know-that-it-is-truly-random#verifying-randomness)

Data Sources: Random values are derived deterministically from the transaction slot, timestamp, your public key, and a unique client seed.

Attribute Mapping: For fusion, the system generates four random values: the first determines the new hashrate, and the subsequent values determine the skill type and power for each preserved skill slot.

Verifiability: Because these values are logged on the Solana blockchain as a commitment hash, you can independently verify that the outcome was not manipulated after the transaction is confirmed.

#### Strategy Implications

**Upgrading Degraded Nodes**

Fusion serves as a primary method for dealing with permanent hashrate degradation caused by repeated repairs. Instead of mining with a weakened node, you can fuse it to "reset" it into a higher-tier node with a fresh hashrate range.

**Skill Power Scaling**

Since fused nodes roll skills at the new tier's power ranges, fusion is a strategic way to obtain higher percentages for [passives](https://docs.hashed.tech/core-concepts/passive-skills) like Event Shield or Deterioration Reducer.

**Slot Preparation**

If you want a high-tier node with multiple skills, you should use [Flux Expander](https://docs.hashed.tech/core-concepts/items-and-inventory) items to add slots to your lower-tier nodes before fusing them. However, you must ensure you add the same number of slots to both nodes to satisfy the fusion rules.

**Superior Tier Path**

Fusion is the only way to reach the maximum potential of the Superior tier, which allows for up to 4 passive skill slots, providing the most powerful combinations for long-term mining

***Read more:***&#x20;

{% content-ref url="items-and-inventory" %}
[items-and-inventory](https://docs.hashed.tech/core-concepts/items-and-inventory)
{% endcontent-ref %}

{% content-ref url="passive-skills" %}
[passive-skills](https://docs.hashed.tech/core-concepts/passive-skills)
{% endcontent-ref %}