VOTE: YES
TLDR: Replaces an offline node, and another node that is likely to have been offline at the time the proposal was submitted (see Node Provider Rewards dashboard screenshot below) but which is now back online.
One of the proposed replacements is online, and the other one is degraded. I would reject this proposal, based on taking a good node out of subnet and replacing it with a degraded node. However it also takes a completely offline node out of subnet, and replaces it with a good node.
One of the replacement nodes belongs to a new node provider for which there is a degree of controversy. At the very least, the Zarety LLC node provider should be considered to belong to an NP cluster that includes Rivonia Holdings LLC and Blue Ant LLC. Given that neither of these node providers currently have nodes in this subnet, I consider this proposal adoptable.
Formal decentralisation metrics are unaffected by this proposal (those prescribed by the IC Target Topology). Clustering within Europe increases with this proposal, but continent is not a formal part of the IC Target Topology.
Country Discrepancies (1)
Decentralisation Stats
Subnet node distance stats (distance between any 2 nodes in the subnet) →
|
Smallest Distance |
Average Distance |
Largest Distance |
| EXISTING |
491.749 km |
8841.978 km |
16616.573 km |
| PROPOSED |
491.749 km |
8188.124 km (-7.4%) |
17077.023 km (+2.8%) |
This proposal slightly reduces decentralisation, considered purely in terms of geographic distance (and therefore there’s a slight theoretical reduction in localised disaster resilience). 
Subnet characteristic counts →
|
Continents |
Countries |
Data Centers |
Owners |
Node Providers |
Node Operator |
| EXISTING |
5 |
13 |
13 |
13 |
13 |
13 |
| PROPOSED |
5 |
13 |
13 |
13 |
13 |
13 |
Largest number of nodes with the same characteristic (e.g. continent, country, data center, etc.) →
|
Continent |
Country |
Data Center |
Owner |
Node Provider |
Node Operator |
| EXISTING |
4 |
1 |
1 |
1 |
1 |
1 |
| PROPOSED |
5 (+25%) |
1 |
1 |
1 |
1 |
1 |
See here for acceptable limits → Motion 135700
The above subnet information is illustrated below, followed by a node reference table:
Map Description
-
Red marker represents a removed node (transparent center for overlap visibility)
-
Green marker represents an added node
-
Blue marker represents an unchanged node
-
Highlighted patches represent the country the above nodes sit within (red if the country is removed, green if added, otherwise grey)
-
Light grey markers with yellow borders are examples of unassigned nodes that would be viable candidates for joining the subnet according to formal decentralisation coefficients (so this proposal can be viewed in the context of alternative solutions that are not being used)
-
Black dotted line connects to a small black marker that shows where the IP address indicates the node is located (according to ipinfo.io). This is only displayed if it conflicts with where IC records indicate the node is located. See Country Discrepancies section above for more info.
Node Changes
Other Nodes
You may wish to follow the CO.DELTA known neuron if you found this analysis helpful.
CO.DELTA △
We’re a verifiably decentralised collective who review IC deltas (changes applied by NNS proposals). We follow a common code:
- Look: We observe the details and context of NNS proposals
- Test: We test and verify the claims made by those proposals
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Every vote cast by CO.DELTA is the result of consensus among diligent, skilled and experienced team members acting independently. The CO.DELTA neuron follows the vote of D-QUORUM on NNS topics that the CO.DELTA team does not handle directly. You can therefore follow CO.DELTA on all topics and rely on the highest quality of vote.
Note that this analysis involved data provided by the IC-API, which is not open source. I’m in the process of switching over to more verifiable sources of this sort of information for future proposal reviews. See here for related discussion.
