The brief
Apps that remember
Walrus Memory keeps scores, preferences, and reasoning across sessions. Your product gets sharper every week, not every login.
20 Oct to 10 Nov 2026Online globally$4,500 prize pool
3 tracks · $1k each◆Walrus Memory on Mainnet◆Tatum AI Builder · ai.tatum.io◆Tatum RPC & Data APIs◆Web2 builders welcome◆Apps that learn over time◆
3 tracks · $1k each◆Walrus Memory on Mainnet◆Tatum AI Builder · ai.tatum.io◆Tatum RPC & Data APIs◆Web2 builders welcome◆Apps that learn over time◆
Mission briefing
Welcome to the colony.
Fast start
Tatum AI Builder
Optional path with its own $500 award. Generate a first version, then wire Walrus Memory and Tatum RPCs. See How to start with Tatum.
Who it's for
Web2 welcome
Product people, AI builders, sports fans, fintech tinkerers. If you can ship a demo, you belong here.
Under the hood
Real stack
Memory on Mainnet. Tatum Sui RPC and Data APIs when you need onchain reads. Indie builds and AI Builder paths compete on the same tracks.
Three tracks
Pick your sector.
Per track
$1,000
01
Markets & Sports Prediction
Build a prediction app for sports, elections, culture, or markets. Compare bookmaker odds with onchain sources. Track which voices were right. Users log picks before events. Memory stores credibility scores so the app learns who to trust.
Best fit for
Fantasy leagues, sports fans, forecasters, and teams building consumer apps first.
- ▸Sports companion that learns your leagues and trusted analysts
- ▸Odds dashboards that flag when sources disagree
- ▸Pick journals with post game scorecards
Track prizes
1st$500
2nd$300
3rd$200
Special awards
Craft bonuses on top.
Best Walrus Memory
$500
Deepest learning loop. Memories that visibly change the product.
Best Tatum AI Builder app
$500
Best shippable product built primarily with ai.tatum.io.
Best Use of Agent Payments
$500
Best app across tracks using x402 or MPP, settled on Sui.
Submission checklist
What to deliver.
- 01Walrus Memory integrated and writing on Mainnet
- 02Tatum RPC used for onchain data where relevant
- 03At least 10 memories stored on Mainnet
- 04Published blog post: what it does, how it uses Tatum + Walrus, how it learned over time
- 05Working demo and public repo
- 06Optional build with Tatum AI Builder (ai.tatum.io) for the dedicated $500 bonus
Scoring
Judging criteria.
- 30%
Walrus and Tatum Integration
Meaningful and creative use of Walrus Memory, as well as building with Tatum RPCs or Data APIs.
- 30%
Technical Quality
Clean code and successful Tatum Sui RPC integration.
- 20%
Creativity
Original ideas and distinctive product direction.
- 20%
Presentation
Clear documentation and a working demo.
Bonus Share your project on X or LinkedIn. Tagging @Tatum_io and @WalrusFoundation is optional and may earn extra points.
Timeline
Mission clock.
20 Oct
Launch + build starts
Registration opens. Discord office hours go live.
20 Oct to 10 Nov
Build window
Three weeks to ship with Mainnet memory writes.
10 Nov
Submissions close
Repo, demo, and blog post due 17:00 UTC.
11 to 16 Nov
Judging
Same criteria across AI Builder and indie builds.
17 Nov
Winners announced
Results shared publicly with partners and community.
Resources
How to start with Tatum.
Total Recall entries use Tatum RPC and Data APIs. Get an API key, keep the docs open, then optionally prompt AI Builder for a first draft. That path has its own $500 award.
01
Get your API key
Create a free Tatum account. You need the dashboard account ID on the submission form.
Sign up for an API key02
Read the docs
RPC, Data APIs, and getting started. Use these when your app reads onchain data.
Open Tatum docs03 · $500 Bonus
Prompt Tatum AI Builder
Describe a Total Recall app and we open it in AI Builder. Generate the shell, then add Walrus Memory and your Tatum key. Best AI Builder app wins $500 on top of track prizes.
Resources
How to start with Walrus.
Every submission must write Walrus Memory on Mainnet. Open the dashboard to create an agent, then use the docs to store at least 10 memories before you submit.
01
Open the Memory dashboard
Create a Walrus Memory agent. The public key under Delegate keys is the MEMWAL_AGENT_ID on the form.
Open Memory dashboard02
Read the Memory docs
How portable memory works, how to write on Mainnet, and how to keep at least 10 memories.
Open Walrus Memory docs03
Wire it into your tools
Add portable memory to Claude Code or Codex, or ask in Walrus Discord if you get stuck. Best Walrus Memory wins $500 on top of track prizes.
FAQ
Before you launch.
Solo builders or teams. Crypto native or not. If you can ship a demo in three weeks, you are in.
No. It is one path with its own $500 award. Indie builds compete on the same track prizes.
Mainnet Walrus Memory (10+ writes), Tatum RPC where relevant, blog post, demo, and repo.
They suggest direction. Execution beats novelty. Do not copy the brief verbatim.
Fully online and open globally.
Yes if the submitted work is new progress during the build window.
Ready to build?
20 Oct to 10 Nov 2026 · 3 tracks · $4,500
Three weeks. Three tracks. Ship something that remembers you. Walrus Memory stores the learning. Tatum AI Builder and RPCs power the build. No crypto degree required.
Paths into Tatum & Walrus