Hacker News

Show HN: I Built a $1 Escalating Internet Billboard – Called Space

Hacker News - Fri, 02/27/2026 - 4:07pm

Hey HN —

I made something simple called Space.

It’s one digital billboard.

Anyone can buy it. It starts at $1. Every time someone buys it, the price increases by exactly $1.

That’s the whole mechanic.

Why I Built It

I wanted to test a constraint:

What happens when ownership is singular, public, and progressively more expensive?

At $1 it’s impulse. At $100 it’s intentional. At $1,000 it’s a statement.

By the time it reaches $1,000, it will have generated $500,500 in total revenue — purely from the $1 incremental mechanic.

I’m curious about:

How price escalation changes meaning

Whether late buyers value symbolism over reach

What people choose to display when cost forces consideration

The Constraint Layer

The constraint is the point.

Only one “space” exists at a time.

Price is deterministic (+$1 per transaction).

The entire history is embedded in the current price.

The value increases because participation increases it.

No auctions. No bidding logic. No variable pricing.

Just math and participation.

Technical Side (Where I’d Love Feedback)

This has been more interesting to build than I expected.

Some things I’ve been dealing with:

Race conditions around concurrent purchases

Locking logic so two buyers don’t claim the same price

Ensuring atomic increments on the backend

Payment confirmation before state mutation

Preventing replay or double-submission exploits

Keeping it minimal without overengineering it

Right now it’s intentionally lightweight. But I’m thinking about:

Should price increments be fully on-chain / provable?

Is there a cleaner way to handle concurrency at scale?

Would you introduce time decay or leave it purely linear?

Should the historical ownership chain be immutable + public?

What safeguards would you add?

Part of me wants to keep it naive and raw. Part of me wants it architecturally tight.

Comments URL: https://news.ycombinator.com/item?id=47185617

Points: 1

# Comments: 0

Categories: Hacker News

Show HN: I vibe coded a DAW for the terminal. how'd I do?

Hacker News - Fri, 02/27/2026 - 4:05pm

So, I've never written a line of Rust in my life. I wouldn't know an `&mut this` from a mutandis. But I saw a tweet about a month ago that said, in this new era of AI, you'd be able to just take a library that you love, throw a TUI around it, and call it an app. So I spent about 200 bucks last month, here's what I came up with:

Imbolc is a DAW that runs entirely in your terminal. It talks to scsynth over OSC and ships 58 instruments and 39 effects. VSTs are a work in progress, also GarageBand loops if you want to recreate "Umbrella".

The codebase is about 60k? lines of Rust across 5 crates, with ~1,100 tests. I don't actually know. It's funny because I've always been the one writing code, and now I was everybody except the one writing code: QA, Product, Design.

Some prompts that worked well: "Looking at this codebase, what looks like an obvious retrofit?" "Where can we lean on the compiler?" After an agent completed a task, I'd interview it — where did you have trouble, what felt like a hack, what would you do differently. v1 was clojure, v2 was java, v3 is rust. v4 will be stones and sticks.

So nowadays out here in the deep future, I think programming will become a matter of taste. Here's what I think demonstrates my sensibilities:

- Accessibility: This is what I'm most proud of. TUIs are usually terrible for screen readers. In Imbolc, every action in the UI is available as a typed command (after I started typing this up I thought, is that true? turns out it wasn't, so now the compiler enforces this.). - LAN collaboration: Multiple people can connect to a shared session over the local network and share midi clock, tuning, effects buses, etc. Audio is never sent over the network. - Weird musical choices: With the "Global" just intonation setting, your absolute tuning can drift over time. I was thinking about how an accordion looks kind of like a qwerty keyboard, so I added a quasi Stradella layout. A432 by default, and so on. - Command palette, themes, keybindings, Diataxis docs. It requires SuperCollider installed (scsynth on PATH). macOS and Linux 1st class, BSDs are next on the roadmap, no Windows.

It's still alpha, there are plenty of rough edges. But it is genuinely fun to dink around on, I'd love to know what you all think.

Comments URL: https://news.ycombinator.com/item?id=47185603

Points: 2

# Comments: 0

Categories: Hacker News

Show HN: A pure Python HTTP Library built on free-threaded Python

Hacker News - Fri, 02/27/2026 - 4:01pm

Hey HN,

I built a small HTTP framework to experiment with free-threaded and wanted to share some observations. Barq is ~500 lines of pure Python — no C extensions, no Rust, no Cython. It uses only the standard library plus Pydantic.

Benchmarks (Barq 4 threads vs FastAPI 4 worker processes):

- JSON: Barq 10,114 req/s vs FastAPI 5,665 req/s → Barq +79%

- DB query: Barq 9,962 req/s vs FastAPI 1,015 req/s → Barq +881%

- CPU bound: Barq 879 req/s vs FastAPI 1,231 req/s → FastAPI +29%

Comments URL: https://news.ycombinator.com/item?id=47185550

Points: 1

# Comments: 0

Categories: Hacker News

The Problem with P(doom)

Hacker News - Fri, 02/27/2026 - 4:01pm
Categories: Hacker News

Why is getting a cheap prepaid SIM card in the USA so complicated?

Hacker News - Fri, 02/27/2026 - 3:12pm

I moved to the US last year and was genuinely shocked by how confusing the mobile carrier landscape is compared to other countries. Back home getting a cheap prepaid SIM card was straightforward — walk into a shop, pay a small amount, done. Here it felt like navigating a maze of contracts, credit checks, activation fees and confusing plan structures.

After months of research here's what I actually learned:

Why the US mobile market feels expensive: The postpaid model dominates American carrier marketing. Verizon, AT&T and T-Mobile spend billions pushing monthly contracts because recurring revenue is more predictable. The cheap prepaid SIM card market exists but gets buried under postpaid marketing budgets. Most Americans don't realize prepaid runs on identical network infrastructure.

The MVNO layer most people miss: MVNOs — Mobile Virtual Network Operators — lease wholesale capacity from the big three carriers and resell it at significantly lower margins. They don't own towers. They don't need to. The economics are simple — wholesale capacity costs are fixed regardless of how many subscribers use it, so smaller carriers can profitably offer cheap prepaid SIM cards at prices the parent carriers would never match retail.

What I found after actually researching: Monthly prepaid is the obvious first step but annual prepaid is where the real savings are. Most cheap prepaid SIM card comparisons online focus on monthly options and completely ignore the annual tier.

Current annual prepaid landscape for reference:

Mint Mobile: $240/year — T-Mobile network, 5GB-unlimited options Visible: $300/year — Verizon network, unlimited data US Mobile: $210-390/year — multi-network, flexible plans Infimobile: $75/year for 10GB, $125/year for 15GB — Verizon or T-Mobile network, launched January 2026

My actual experience: Ended up on Infimobile after going through every cheap prepaid SIM card option available. $75/year for 10GB on T-Mobile network. Unlimited calls and texts included. No activation fees, no credit check, eSIM supported — activated entirely online in about 10 minutes. No store visits, no paperwork, no contracts.

Honest limitations with Infimobile specifically:

Annual upfront payment — $75 all at once No unlimited data — 10GB at $75/year, 15GB at $125/year Choose Verizon or T-Mobile at signup, locked for the year Speeds deprioritized slightly during peak congestion like any MVNO

The numbers that matter:

OptionAnnual CostMonthly EquivalentPostpaid average$780/year$65/monthMint Mobile$240/year$20/monthVisible$300/year$25/monthInfimobile 10GB$75/year$6.25/monthInfimobile 15GB$125/year$10.42/month

What surprised me most: Getting a cheap prepaid SIM card in the USA is actually extremely easy once you know where to look. The complexity isn't technical — it's marketing. The big carriers make switching feel complicated because complicated keeps customers paying $65/month. Infimobile's entire activation happens online with an eSIM. No physical SIM waiting period, no store visit, no awkward sales pitch.

For international students, travelers or anyone new to the US mobile market — the cheap prepaid SIM card options available annually are a completely different category compared to what postpaid marketing suggests exists. Infimobile at $75/year sits so far below competitors that it genuinely looks like an error the first time you see it.

The $75 I paid for my Infimobile plan recovered itself within the first 5 weeks compared to what I was previously spending. For light to moderate data users the math on switching is immediate.

Curious whether others who moved to the US had the same experience navigating the carrier landscape. And for anyone who has been on annual prepaid long term — how has Infimobile or similar carriers held up over time compared to monthly options?

Comments URL: https://news.ycombinator.com/item?id=47184937

Points: 1

# Comments: 0

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