The Arca Launch Challenge: 15 Days, $10,000

2026-10-28

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TL;DR

For an exclusive 15-day promotional period, Arca is putting $10,000 in prizes on top of its regular payouts, as a reward for its first users. Request an invite, and once you’re in, submit your AI sessions, old or new, from any kind of work. Arca pays you for every approved session as usual. During the challenge, each of those payouts is also added to your challenge total, along with a bonus from any friends you refer. When the 15 days are up, users with the three highest totals win $1,000, $600 and $400, and the other $8,000 is split among everyone else who took part, based on their totals.

Why we’re doing this

Arca is the new app from the Brevis team that pays you for the AI sessions you’d otherwise throw away: the back-and-forth, the dead ends and the version that finally works.

Arca will stay invite-only for a while, and we want the people who join early to get the most out of it. So for 15 days, on top of the regular payout for every approved session, everyone who takes part shares in $10,000.

For the full story on Arca, read our launch post.

How it works: two things happen at once

Arca pays you, like always. You submit a session, Arca reviews it, and if it’s approved, you get paid for it in USDC every week. Nothing about this changes during the challenge.
Your challenge total adds up. Every session approved during the challenge also adds to your challenge total, or score: 1 point for every $1 it pays. You don’t have to do anything extra; it happens automatically. The more sessions you get approved, and the more each one pays, the higher your challenge total.

When the 15 days are up, your challenge total decides your prize. That prize is paid separately, on top of everything Arca has already paid you. The top 10 are on the live leaderboard at arca.market, and your own total is in your dashboard.

The prize

The $10,000 is split two ways.

Top three: $2,000.

The three highest challenge totals win:

1st place: $1,000
2nd place: $600
3rd place: $400

Everyone else who took part: $8,000.

This pool is split among everyone else with at least one session approved during the challenge, in proportion to their challenge totals. A higher total means a bigger share.

All prize money is paid in USDC. Already using Arca? You’re in the challenge automatically.

How to take part

Request an invite at arca.market/request, connecting your GitHub. We review requests every day. Approval isn’t guaranteed, so request early.
Download and open Arca once you’re in. It finds the sessions your AI tools have stored on your machine, past ones included, and lists them so you can see exactly what it found.
Submit sessions between October 28th and November 12th. Upload old sessions you no longer need, or work on new projects and submit those too. Sensitive details are stripped on your machine before anything leaves, and a quote comes back for each one. Confirm, and it goes to review; withdraw, and it doesn’t.
Get paid and watch your total grow. Each approved session is paid as usual and added to your challenge total.
Invite friends with the referral link in your dashboard, for a bonus on your share of the pool. 20% of what they earn during the challenge is added to your total as points.

Nothing leaves your machine unless you decide it should.

What makes a session pay more

Arca pays for real work done with AI, in any field. Code counts, but so does a research project, a contract review, planning a trip or scouting wedding venues with an AI agent. Every submission goes through Arca’s review, including an evaluation of the quality of the interaction, and that review sets the payout. Higher payouts mean a higher challenge total. The sessions that pay the most are:

Deep. A real back-and-forth: many turns of you guiding, correcting and steering the AI, not a one-shot prompt.
Meaningful. Real work with a real goal behind it.
Varied. Work from different fields and different kinds of tasks all counts.

Sessions need to come from a tool Arca reads (Claude Code, Codex, the Claude or Codex extensions for VS Code, or Claude Desktop, including Cowork) and use a qualifying model (Claude Opus or Fable, or the latest GPT models in Codex). Very short sessions don’t qualify.

Invite friends

Most of your score comes from your own approved sessions. Referring friends earns you bonus points on top: for every friend you refer, you get points equal to 20% of what their approved sessions pay out during the challenge. For example, if a friend’s approved sessions pay them $100, you get 20 bonus points.

These are points, not money. You don’t receive any of your friend’s earnings, and nothing is taken from them. The bonus points only raise your score, which helps your ranking and your share of the prize pool.

Once you’re in, you’ll find your personal referral link on the left side of your Arca dashboard, with a one-click copy button. Share it with friends. When they open it, they land on the Arca site, and when they click “Request an invite”, your referral code is already filled in for them on the request form. Above your link, the Your Challenge Stats panel shows your points and referrals so far, along with a “Share on X” button that opens a ready-made post with your link already in it.

Your friend just needs to sign up with your link and get approved. From then on, every session of theirs approved during the challenge earns you bonus points.

Getting your prize

When the 15 days are up and the last reviews are done, we publish the results within a week and contact everyone receiving prize money through the email on their Arca account, or X DM. (Make sure to double check any communication you receive comes from our official accounts or emails).
Everyone receiving prize money completes two quick steps:
- A short feedback form about their experience with Arca.
- A post on X in your own words, explaining what Arca is and what you like about it.
Once we have your feedback, we send your prize in USDC to the wallet connected to your Arca account.

Key dates

Challenge opens: October 28, 12:00 UTC
Challenge closes: November 12, 12:00 UTC

The fine print

One Arca account per person.
Requesting an invite doesn’t guarantee approval.
Only sessions submitted during the challenge count toward your score, including older sessions you upload in that time.
Only approved sessions earn points. Withdrawn or rejected sessions don’t.
The top three are excluded from the $8,000 pool.
Referral bonus points only come from friends who signed up with your link. Referring yourself through a second account, or any other attempt to game the results, means disqualification.
Prize money is only paid once the recipient has completed the feedback form.
If two people tie for a top-three place, the one who reached the score first ranks higher.
We may disqualify anyone who breaks these rules. Our decisions are final.

Ready?

Request your invite at arca.market/request. The sooner you’re in, the longer your challenge total has to grow.

About Brevis

Brevis is a verifiable computing platform powered by zero-knowledge proofs, serving as the infinite compute layer for Web3 and beyond. Applications can offload expensive computation off-chain while proving every result on-chain. The Brevis stack includes Pico zkVM for general-purpose computation, which in its 3.0 release proves Ethereum blocks in real time on a single machine with 4 GPUs and 100 bits of provable security; the ZK Data Coprocessor for trustless access to historical blockchain data; Vera for ZK-proven media authenticity; and ProverNet, the decentralized marketplace for ZK proof generation, live on mainnet. To date, Brevis has generated nearly 400 million proofs across 50+ protocols on 14 blockchains.