# Network of Momentum Phase 1

**URL:** https://forum.hypercore.one/t/network-of-momentum-phase-1/253
**Category:** Development
**Created:** [December 2, 2023, 10:11pm UTC](https://forum.hypercore.one/t/network-of-momentum-phase-1/253 "2023-12-02T22:11:29Z")
**Posts on this page:** 1
**Showing post:** 20

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### Author: ![0x3639](https://forum.hypercore.one/user_avatar/forum.hypercore.one/0x3639/32/33_2.png) [@0x3639](https://forum.hypercore.one/u/0x3639)
#### Post date: [December 5, 2023, 12:40pm UTC](https://forum.hypercore.one/t/network-of-momentum-phase-1/253/20 "2023-12-05T12:40:25Z")

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> [@Nostromo](#):
>
> I feel like I’m at the risk of seeming like I’m trying to throw a spanner in the works of your ideas

Best ideas win around here so I’m curious to see where this conversation goes.

Regarding your question about what is a Sentinel. As I understand it, a Sentinel is a full node that is tasked with relaying messages a minimum of 3 hops and adds PoW links to each message. Alien posted some recent research into this idea and why it’s valuable. Maybe you read that paper.

> [@The P2P Revolution: PoW links reloaded](https://forum.hypercore.one/t/the-p2p-revolution-pow-links-reloaded/248):
>
> I want to bring into the discussion this paper that was released quite recently: [A Simple Proof of Sybil-Proof](https://github.com/SaitoTech/papers/blob/main/sybil/A_Simple_Proof_of_Sybil_Proof_Lancashire-Parris_2023.pdf) Abstract “This paper offers a counter-proof to this claim, formally proving the existence of a mechanism that achieves sybil-proofness in a three-hop path.” Conclusion “The routing-tax mechanism described in this paper fixes the sybilling problem by inverting the collective action problem that creates the incentive to sybil in the first place.” “With this in mind, we close b…

So my original question was, why can’t the Sentinel serve as an incentivized public node in the network. They are a full node and they are incentivized.

I guess I did not fully appreciate that nodes really don’t offer network security like BTC. So if that is the case, why are more nodes better? Why aren’t Sentinel nodes enough as the main public node in the network. And how many Sentinels are necessary to perform the message relay function and to act as a public node?

I’ll look at the white paper again to try and learn more.

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