Josh Choi

jan: @columbia @alliance

[Josh Choi @jclvsh]

i built duolingo for djing

i've been hosting dj workshops in nyc at @vercinyc for the past 2-3 years through my studio jams music community. it's one of our most highly requested events and people are always asking me to teach them how to dj

this is the first app i'm launching this year that's built around my own life - my passion, my demand, my distribution

the app has a skill tree of graded drills (it scores your beatmatching, transitions, and crossfader work), live decks to practice on, and a floor to share your mixes

"spin sensei" on the app store or link below

https://t.co/UxBxUBP4Bz

[alison chen @aliisonchen]

@jclvsh @vercinyc sick!

[may @maysquarepants]

@jclvsh @vercinyc never thought i could learn how to DJ this way

[adhiv @adhivdhar]

@jclvsh @vercinyc goated

[Rishab Hegde @rishab_hegde]

@jclvsh @vercinyc so sick!!

[Verci @vercinyc]

@WoahIsThatSteve @jclvsh this is sick!

[steve @WoahIsThatSteve]

@jclvsh @vercinyc when’re you gonna stop being him

[los (appstar) @downloadlos]

our very own mike wing who's signed to our app label

dropped an extremely viral app

he's addicted to buying digital games on steam

so he built a website that gives him the same dopamine

[Ali @ahmeditate]

You're citibiking in NYC, sweating bullets, you get to your dock, and it's full.

So now you have to pull out your phone (like a chump) and find the next open dock.

Got tired of this, so here's an app I made for the Meta Ray-Ban Display glasses 😎

[los (appstar) @downloadlos]

nyc appstar📍

[Josh Choi @jclvsh]

@jakepulier lfg

[Anna @stressandvest]

@jclvsh this is so hype. build for yourself always

[Josh Choi @jclvsh]

i spent more time djing than working on my product studio in may

after launching a product a month from january to april i felt sooo burnt out

whenever i feel that way i turn to friends and music

i got to dj a yacht party, a Warner Music event, a joint birthday, and a boiler room back to back

dancing and raging with my homies brought me back to life

i've always thought of music as a hobby, something divorced from the tech + startup stuff i do for work

last month made me question that assumption

why do i keep these two parts of my life separate when there could be something fun in the intersection

the go-to-market products i've launched so far this year were super fun and i've built out the automated distribution system i wanted for launches going forward

but i'm ready for the next suite of products that only i would care enough to build

more coming soon

[ethan 🎣 @EbisuEthan]

We turned the Claude/Codex waiting spinner into an onchain, bot-proof ad marketplace.

Advertisers bid for ad space inside the world's fastest-growing attention sink. Users see a 5-second ad instead of the loading spinner, and earn USDC.

• 18+ million hrs/mo spent waiting for AI to respond
• $5.25B (8.5% of all ad spend) wasted on invalid traffic (bots)

Full credit to @andrewmccalip's https://t.co/0eCQW0Azgb for the idea.

We tried to solve two big issues Andrew faced:

1) Payments: processors impose min payouts, high fees, have withdrawal limits, limited support for non-US banks. https://t.co/heNw0e4W2H

Solution: advertisers escrow USDC and bid ad space via on-chain auction. Users paid out instantly anywhere in the world.

2) Fraud: client-side ad traffic can be faked taking resources to filter.

Solution: @worldnetwork World ID + AgentKit bind each agent to a verified human making botting economically unviable.

Andrew, happy to help with any onchain/stablecoin features you wanna add :)

Verified human attention creates a flywheel: higher ROAS drives more advertiser demand, which raises CPMs, increases user payouts, attracts more users, and brings in more verified attention.

Note, currently just hackathon project on testnet built by @0xdivergence

[andrea @y_earu]

@jclvsh @nehaisfunny this if fiyaaaa 🔥

[Josh Choi @jclvsh]

my most-bookmarked account on x is @FarzaTV. 16 of my 691 saves are theirs.

also saving from @levelsio @EXM7777

https://t.co/CF2j3pfmyU

[Josh Choi @jclvsh]

i've saved hundreds of x bookmarks i never look at again. so i built xmark: ask questions across all of them, get answers cited back to the exact posts.

https://t.co/G5tAi1UERb

[Josh Choi @jclvsh]

plus xmark wrapped - find out who you actually bookmark most.

[sj is in sf 🌁🦄🌞🧋 @swunicorn]

I wrote about why I’m pivoting back to AI ads

[ana @anamika__x]

the official a16z nyc tech week site has 1,601 events and 0 useful filters.

i built a better one with a chatbot that tells you where to go.

https://t.co/qOcYBMvek4