---
# System prepended metadata

title: 'Collateral Call Summary - Episode #23'
tags: [Collateral Call]

---

---
tags: Collateral Call
---

# Collateral Call Summary - Episode #23
January 13th, 2021

## Agenda

- [00:00](https://www.youtube.com/watch?v=C1dbId69vJo?t=0): Introduction with Juan Guillén [&downarrow;](#Introduction)
- [00:47](https://youtu.be/C1dbId69vJo?t=47): xDai with Igor Barinov and Andrew Gross [&downarrow;](#xDai)
- [44:13](https://youtu.be/C1dbId69vJo?t=2653): Special Guest Patricio Worthalter from Proof Of Attendance Protocol [&downarrow;](#Special-Guest-Patricio-Worthalter)
- Q&A and Discussion about xDai was interspersed in the presentation [&downarrow;](#xDai)
- [01:10:28](https://youtu.be/C1dbId69vJo?t=4228): Closing comment [&downarrow;](#Closing-Comment)

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## Video

<https://www.youtube.com/watch?v=C1dbId69vJo>

## Introduction

### Juan Guillén

#### Agenda and Preamble
[00:00](https://www.youtube.com/watch?v=C1dbId69vJo?t=0)

- Welcome to another MakerDAO Collateral Call. Today we have the xDai team, a very interesting project. We also have Patricio from POAP, the Proof Of Attendance Protocol, joining as a special guest; he's going to be describing his own project afterwards.
- Discussions about collateral happen in the [Forum.](https://forum.makerdao.com/c/risk/collateral-meetings/23)

## xDai

- [[STAKE] MIP6 Collateral Onboarding Application
](https://forum.makerdao.com/t/stake-mip6-collateral-onboarding-application/5551)

### Igor Barinov and Andrew Gross

#### Presentation
[00:47](https://youtu.be/C1dbId69vJo?t=47)

![Overview & history](https://i.imgur.com/BrpRMUk.png)

![What is xDai](https://i.imgur.com/OcBjHSn.png)

>[**06:24** — Juan Guillén: Dai to xDai is not one-to-one, right?](https://youtu.be/C1dbId69vJo?t=379)

![Brief history](https://i.imgur.com/HneLVds.png)

![Brief history](https://i.imgur.com/tYUifu1.png)

![Brief history](https://i.imgur.com/LgxYAmm.png)

![Features and adoption](https://i.imgur.com/BIkSMNZ.png)

![Stable transactions](https://i.imgur.com/BkmwrE6.png)

![Interoperability](https://i.imgur.com/HMZPLRx.png)

>[**13:54** — Question in chat: Even if gas is payed in Dai, which is stable, what prevents gas from increasing over time, so breaking the stable property of xDai?](https://youtu.be/C1dbId69vJo?t=834)
>[**16:56** — Correct me if I'm wrong, but I think xDai is like a sidechain which is PoS instead of PoW, so we have these validators and it's cheaper to process these transactions. And I find it really cool that my address on Ethereum is the same address on xDai](https://youtu.be/C1dbId69vJo?t=1016)

![Public POSDAO](https://i.imgur.com/l2IUNVm.png)

![STAKE governance token](https://i.imgur.com/eAJAkTP.png)

>[**24:46** — Tim Black: Did we cover how much STAKE is needed to become a validator?](https://youtu.be/C1dbId69vJo?t=1486)
>[**27:15** — Juan Guillén: Regarding the rewards, are the fees that are consumed distributed among validators?](https://youtu.be/C1dbId69vJo?t=1635)
>[**30:23** — Payton Rose: I was curious about the cost for using the bridge between the two](https://youtu.be/C1dbId69vJo?t=1823)
>[**35:20** — Question in chat: Will STAKERers eventually be able to get rewards from using the tokens [...] ERC20 locked in the bridge for some extra profit?](https://youtu.be/C1dbId69vJo?t=2120)

![Tools and project integrations](https://i.imgur.com/nnRRlRW.png)

![Project integrations](https://i.imgur.com/8kae8dW.jpg)

![Current usage](https://i.imgur.com/bbLCd13.png)

![Resources](https://i.imgur.com/a1oIHY9.jpg)

## Special Guest Patricio Worthalter

![](https://i.imgur.com/w9Ss3KX.jpg)

>[**58:43** — *Free discussion*](https://youtu.be/C1dbId69vJo?t=3523)
>[**01:06:40** — Juan Guillén: L2 chains do settlements every couple of weeks or so. If a mint a POAP in xDai, am I supposed to receive it after two weeks on Ethereum?](https://youtu.be/C1dbId69vJo?t=3999)


## Closing Comment

### Juan Guillén

#### Outro
[01:10:28](https://youtu.be/C1dbId69vJo?t=4228)

- Patricio, how can people learn more about [POAP](https://www.poap.xyz/) and find you and follow you et cetera? [(01:10:28)](https://youtu.be/C1dbId69vJo?t=4228) I actually wrote a tiny [tutorial on how to create a POAP](https://definotes.com/Create-a-POAP-for-your-Event-5af06cdfb7c24286ac3d31b0f0a47c40) for your event; it's on [definotes.com](https://definotes.com/) — and yeah: it's super straightforward. Let's keep the discussion in the forum. Looking forward to see how this evolves. Thank you for joining us.


## <a name="cred">Credits</a>

- @blimpa produced this summary.
- Everyone who spoke and presented on the call, listed in the headers.