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**Tess Rinearson:** Yeah. Anyway, to jump back to Carlisia's question about open source versus non-open source codebases and the way that you build them - we did not start building Chain Core with open sourcing in mind, but we always had pretty rigorous guidelines around even like commit style. And early on we had a lo...
What we open sourced we called Chain Core Developer Edition, and that's most of the guts, most of the logic, most of the interesting blockchain stuff is in there, but we do have other features around security and scalability that we withheld from the open source project. If you are a financial service paying us for an ...
Ultimately, it was a little bit of cleanup around the edges, but the code itself really didn't change. Oh, I think we also wrote some more package docs before open sourcing, but by and large we didn't have to change too much.
**Brian Ketelsen:** Yeah, that's always my big thing. I write a bunch of code, and I think "Oh, I should release this on GitHub" and "Oh, I can't do that... There's no Go Docs. Can't do it." And I spent two days...
**Tess Rinearson:** Oh my god... Wow.
**Erik St. Martin:** See? Brian does the reverse to me, though. Like "You should open source that." "No. There's not really good test coverage, there's no docs, I'm not all that proud of the code..." "You should open source that", and then he'll open source it for me. \[laughter\]
**Brian Ketelsen:** Just once.
**Tess Rinearson:** That's so funny.
**Brian Ketelsen:** Maybe twice.
**Erik St. Martin:** Once he did it and then wrote a blog article about it. Like, "Oh, man..." \[laughter\]
**Tess Rinearson:** Surprise! \[laughs\]
**Brian Ketelsen:** Erik doesn't take enough credit for his awesome work. I'm just helping him.
**Tess Rinearson:** It's always good to have a friend who does that.
**Brian Ketelsen:** See? You need a champion in your corner.
**Erik St. Martin:** I just wanna build stuff.
**Brian Ketelsen:** Well, that's a good segue into our next sponsor.
**Break:** \[38:41\]
**Erik St. Martin:** So in prepping for this, you had sent an email and you were mentioning a side project that you had, and I always love fun side projects.
**Tess Rinearson:** Yeah, this is kind of a funny one. I almost even hesitate to call it a side project, because that suggests sustained work over months, building towards something really awesome, and this is just something I play with. But you asked if I were going to hack on something this weekend, what would I hack...
**Brian Ketelsen:** \[40:11\] Nice!
**Tess Rinearson:** Yeah... The reason this is cool -- so when I wrote it initially, I just wrote it because I have a Seattle phone number. I grew up in Seattle phone number, I'm really happy with it, proud of it, I don't wanna get rid of it, but the call box to my apartment requires a local San Francisco number. So th...
**Brian Ketelsen:** We have a much better solution for this!
**Tess Rinearson:** Right! So part of it was like "What if I wanna do something else with it in the future?" Then, the other part of it was like, "Oh, but it would be so much more fun to write this myself", so I actually recently came up with the "Oh, here's actually why this is useful" piece of it, which is that I tri...
**Erik St. Martin:** It's got a brown spot?
**Tess Rinearson:** Yeah, totally. Or an onion that's too small, or a carrot that has two legs, or all these things that make something inappropriate for a grocery store, but they're still totally edible and delicious. I kind of got into this when I was living - this is also a cliché - in Berkeley, and my roommate in B...
So the solution that the company suggests is that you give - this is turning into a very long backstory - a key to your building to them. And I was like "Yeah, I work at crypto... I don't feel good giving a key that I can't rotate to some company." So I was like "Oh, I know... I will write a code into my callbox app", ...
This will be a problem when the person delivering the vegetables does not enter the code in time and then I get a phone call anyway. But until that happens, that's my grand plan. So that's what I've been doodling around with lately.
**Carlisia Thompson:** Wow.
**Erik St. Martin:** And you can audit log. You get to know when the door opened and they came in.
**Tess Rinearson:** Yeah, I should definitely build that in. It's funny... That's like a really obvious...
**Carlisia Thompson:** And then, of course, build the dashboard. Maybe use Prometheus.
**Tess Rinearson:** \[43:48\] Yeah, these are all v2 things. Honestly, I haven't worked really on anything but Chain stuff for the past two months, just because we were trying to get everything in ship shape, and we had some product... You know, in addition to open sourcing, we had product stuff that we were announcing...
**Carlisia Thompson:** Did that involve a screwdriver? That's what I wanna know.
**Erik St. Martin:** Did that involve a screwdriver? \[laughs\]
**Tess Rinearson:** It does not involve a screwdriver yet. \[laughter\] How did your screwdriver thing work out, by the way?
**Carlisia Thompson:** It worked out. I needed to do some exercises with my hands, but it worked out in the end.
**Tess Rinearson:** Awesome. \[laughter\]
**Erik St. Martin:** Well, your Twilio makes doing phone stuff so awesome. Prior to that I had done some stuff with Asterisk and FreeSwitch. You had to build in and talk over a socket to these things, and stuff like that, to build IVR - Integrated Voice Response is what they call the systems where you call in and inter...
**Tess Rinearson:** Yeah. It's funny, Twilio is a little bit - as I learned on this project - of a pain in the butt in Go, because there's no Go SDK, and I think most people generally use SDKs, and everything else is XML.
**Erik St. Martin:** Right, yeah.
**Tess Rinearson:** So on this project I learned about... You know, I've never had to use Go's XML tooling before, but I learned a little bit about that, too.
**Erik St. Martin:** Just kind of using structs and encoding it to XML.
**Tess Rinearson:** Exactly.
**Brian Ketelsen:** It works... I've done it once. It's painful, but it works.
**Tess Rinearson:** Yeah. I mean, it's not the most fun, but it works, and there's not really any surprising behavior, which I feel like sometimes with web stuff is as good as it gets - no surprising behavior. \[laughter\]
**Erik St. Martin:** I think people now live in a time that's much easier... Like, I remember web development when you really had to test individual browsers, because you had to write CSS that accounted for the differences between them. Like, "No more IE 6"... I remember when people had icons on their website for that,...
**Tess Rinearson:** Yeah...
**Erik St. Martin:** It was like their badge of "I refuse to support IE 6 just because of how much time it takes to make it work in IE 6." So glad that's over.
**Brian Ketelsen:** When I was a kid, we only had one browser. \[laughter\] And it was Lynx.
**Erik St. Martin:** I thought you were gonna say Netscape.