Weekly Roundup 04/17/26 (BIP361 proposal, SEC's DeFi frontend policy, CSW's Bitcoin movie) artwork

Weekly Roundup 04/17/26 (BIP361 proposal, SEC's DeFi frontend policy, CSW's Bitcoin movie)

On The Brink with Castle Island

April 17, 2026

Matt and Nic are back for more news and deals:  Jameson Lopp's BIP361 gets an official BIP number What about an official salvage process for the quantum-vulnerable Satoshi coins What about recycling Satoshi's bitcoins into long-term tail emissions Why the Satoshi freeze war will be unlike the...
Speakers: Nic Carter, Matt Walsh
**SPEAKER_1** (0:01)
Matt Walsh and Nic Carter are partners at Castle Island Ventures. All of these expressed by them or the guests on this podcast are solely their opinions and do not reflect the opinions of Castle Island Ventures. Guests and hosts may maintain positions in the assets discussed in this podcast. You should not treat any opinion expressed by anyone on this podcast as a specific inducement to make a particular investment or follow a particular strategy, but only as an expression of their personal opinion. This podcast is for informational purposes only.

**SPEAKER_2** (0:22)
Brought down by Bad Mortgage Investments, Lehman, which has 25,000 employees, will be liquidated.

**SPEAKER_3** (0:28)
The federal government loans American International Group, AIG, $85 billion.

**SPEAKER_5** (0:35)
The federal government is stepping in to stabilize Fannie Mae and Freddie Mac, the two mortgage giants that have been threatened by the housing crisis.

**Nic Carter** (0:42)
The Bank of England has pumped $75 billion more into Britain's ailing economy.

**Matt Walsh** (0:46)
The new round of constitutive easing.

**SPEAKER_1** (0:47)
You print a couple trillion dollars and all of a sudden people start to worry. So out of this worry, we have something called the Bitcoin.

**Matt Walsh** (0:54)
Welcome to On The Brink, I'm Matt Walsh.

**Nic Carter** (0:56)
And I'm Nic Carter.

**Matt Walsh** (0:57)
How's your week?

**Nic Carter** (0:58)
It's good. There's a kind of a scandal developing in Miami. Have I told you about the Signature Bridge Project here?

**Matt Walsh** (1:05)
Is that the big bridge on your way to the airport?

**Nic Carter** (1:08)
Yeah. Leaving the beach, you go to the airport, there's like five or six huge arches. There's like a multi-billion dollar project. It was meant to be done years ago. Now it's been extended to 2029 Huge boondoggle, colossal boondoggle.
The bridges are cracking, the concrete isn't good. It's like everyone hates it, right?

**Matt Walsh** (1:30)
Yeah.

**Nic Carter** (1:31)
And then, so we're all wondering why there's traffic in the heart of downtown forever because of these bridges. And at the same time, they built an entire stadium for the World Cup in under a year.

**Matt Walsh** (1:42)
Did they really?

**Nic Carter** (1:44)
Yep. Right near the airport, actually. And that's the new inter-Miami stadium.
From, it was a golf course, and now it's a stadium. One year passed.

**Matt Walsh** (1:53)
Wow. Privately funded?

**Nic Carter** (1:56)
Yeah, with some help from the state. So here's the puzzle, Matt. If they can build a whole stadium in one year, why is it taking them 10 years to build the bridge?

**Matt Walsh** (2:06)
Yeah, I don't get that.

**Nic Carter** (2:07)
Now we're asking, we're starting to ask some serious questions.

**Matt Walsh** (2:11)
It's like the bridges from down the Cape. You know, some of those bridges were built in like the 1940s in two years, and they would take 10 years to build today.

**Nic Carter** (2:19)
Right. And the Golden Gate Bridge was built very quickly. I think the Empire State Building was built in under a year. But so the contrast is what's causing us to really wonder, why is this bridge taking so long?
I think there's corruption.

**Matt Walsh** (2:35)
Yeah.

**Nic Carter** (2:35)
That's top of mind for me.

**Matt Walsh** (2:37)
All right. That's good. Well, you've been busy. You just put out another post about Quantum. I haven't even read it yet. So it's called How To Resolve The Matter of Satoshi Coins Without A Freeze.
What did you get into there?

**Nic Carter** (2:49)
Yeah. So yeah, I know what people really wanted from me was another blog on the Quantum. Well, there's a big debate now and I don't know why.
Why are we debating the Satoshi Coins now specifically?

**Matt Walsh** (3:02)
Well, we got to argue all the time. I think that's the thing.

**Nic Carter** (3:04)
Well, we like to fight. Sure. But yeah, for some reason, now everybody's fighting over what are we going to do about the Satoshi Coins. Everyone's kind of, I think most people have made their peace with the fact that yes, we're going to do the Quantum upgrade. There's a conference happening right now, I think actually at MIT or Harvard about it. So it seems like a consensus has emerged, but the thing we don't have consensus on is what are we going to do with these 1.7 million coins that we think are abandoned and are quantum vulnerable that cannot upgrade.
It's very tricky. There's actually no good outcome because either you let some random entity claim 1.7 million bitcoins, and we don't know who that is. It could be disastrous, it could be the end of Bitcoin. Or you change the core principle of Bitcoin, which is the monetary policy. That's also kind of unacceptable.

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