Two ways to own it

What you get

Base$20

Ready now

The working app on your own wallet and git, one-click deploy, and the step-by-step guide that makes you the verifiable developer.

You choose: App name
You choose: Logo and accent color

Customfrom $300

Built around you

Reshape it entirely: new features, your flows, your brand end to end, integrations you need. We scope it with you.

Everything in Base
Custom features and design
Priority build

What you own

The whole app, not a starter kit.

The complete Proof of Opinion app: people sign a dated take on Base, friends co-sign, skeptics counter, swarms are caught, and every take settles into a public track record, with a paywall and spam agent built in.

Base price · $20

The user app, complete

Every buyer gets the same finished app. Basic branding and copy changes come through a quick form.

Three step onboardingHome

Shown once: say it with a date, co-sign or counter, judged on the record.

Take status and next actionHome

Co-signs, called record, takes left and one next step.

Write and sign a takeWrite

Pick the take, check-back horizon, conviction and who can co-sign, then sign on Base.

Badge mint and share cardWrite

A minted take badge and share card right after signing.

Unlimited takesWrite

More than the free takes a month. Gated behind Analyst.

Take wall with co-signsWall

The take card with co-sign stickers, unverified swarm count and counter-take.

Friend, skeptic and swarm pathsWall

A co-sign, a linked counter-take and a caught sock puppet swarm.

Co-sign analyticsWall

Co-signers by wallet age. Gated behind Analyst.

Check-back and settleRecord

Settle a due take as called, missed or a note, with the calendar.

Verified track record pageRecord

A public page to link from a bio. Gated behind Analyst.

Proof receiptRecord

Take hash, mint, co-signs and evidence hash onchain; email never public.

Plans and USDC checkoutMe

Poster, Analyst and Community tiers through the shared USDC checkout.

Open the full app demo

Add-on

Owner console

Your admin side: revenue, paywall editor, users, rules and the agent log.

Revenue and paywall editorRevenue

MRR, incoming USDC, payment methods, tiers, free takes and gates.

Wall rulesRules

Wallet age line, Basename verification, sponsored gas, digest cap and counter-takes.

Spam agent logAgent

Swarm and digest failures and fixes, plus running costs.

Roadmap build requestsRoadmap

v2 and v3 scopes with add-on prices.

Top-up

Growth and referrals

Referral and growth mechanics, switched on when you are ready to grow.

Seasonal contest loop and referralsGrowth

Open a topic season, share loops, bio links and referral codes.

The money path, built in

How it earns for you

Free posting with sponsored gas; analysts pay for a verified record page and communities pay for branded walls, in USDC.

PosterFree3 takes a month, sponsored co-signs, counter-takes, check-back reminders

Analyst$15 a monthUnlimited takes, a verified track record page, co-sign analytics

Community$300 a monthA branded wall for your group, leaderboards, seasonal contests

Gas is sponsored by the owner at about one cent per take or co-sign.

Prices are yours to set. Illustrative, not a promise of income.

Growth loops, built in

How it spreads

Every take is a shareable link that co-signers pass on
Settled takes make screenshot cards
Analysts link their record from their bios
Seasonal topic contests with co-sign leaderboards

Roadmap · build the next phase with us

Where it goes next

v1 included

The full take wall

Sign and attest takes on Base
Badge and take page
Sponsored co-signs and counters
Check-back and settle
Weighted track record

Included

Group walls and contests

Branded community walls
Seasonal leaderboards
Farcaster co-sign frame
Embeddable widget

Add-on from $400

Licensed record for media

White label media instances
Verified role badges
Auto settle data takes
Record API

Add-on from $1,200

For investors and grant reviewers

The pitch, ready

Put your name and a date on what you believe, and be judged on the record.

Problem: Online opinions are judged by volume and followers, and nobody checks back on who was right.

Solution: Takes signed onchain with a check-back date, co-signs weighted by real wallets, linked counter-takes and a settled track record.

Why now: Base makes signing and attesting cost about a cent, and readers are tired of unaccountable takes.

Market: Analysts, writers, research communities and media brands, from free posters to $300 community walls.

The ask: Launch with one analyst community and a transport season.

Funding is never guaranteed. Check each program's rules.

For hackathons and demo days

Your 2 minute demo

Home: Lerato at the barbershop, write the take.
Write: 20 month check-back, conviction 4, sign and mint on Base.
Wall: Bongani co-signs, Sipho counters.
Wall: a 40 wallet swarm shows as unverified, not counted.
Record: settle a due take as called; the verified page is gated behind Analyst.
Owner Agent: weighted co-signs after the swarm.
Owner Revenue: change the Analyst price and free takes.
Owner Growth: open a transport season.

Many hackathons require code written at the event. See the Regatta Boardfor each race's rule.

Make it entirely yours

Branded walls, new chains, data settled takes and media licensing, scoped on a call from $1,000.

Custom from $300

BLUEPRINT

Why it matters and how it really works

The need

Good early calls get lost in group chats and deleted threads, and anyone can claim they said something first. Analysts, writers and ordinary sharp people have no simple, portable way to prove what they said, when, and who stood with them.

What exists and what is new

Pieces of this already exist: Ethereum Attestation Service (EAS) lets anyone sign a dated statement on Base, Zora and Paragraph let writers mint posts, and prediction markets such as Polymarket and Manifold record forecasts with money or play money attached. What is different here is the combination, not a new primitive: a plain-language take with a check-back date, co-signs and linked counter-takes from other wallets, honest weighting of fresh wallets, and a settle-it-yourself track record page, with no betting involved. Novelty is modest; the value is in the format and the habit.

The data it runs on

The take text and its hash, the author wallet, the check-back date, a conviction level, co-sign and counter-take signatures, wallet age and Basename lookups for weighting, and the author's own settle notes. No private messages are read or stored.

1.The mission

Make it normal to put your name and a date on what you believe, and to be judged on the record rather than on who shouts loudest.

2.Why people can't resist it

Receipts for being early A dated, signed take you can link from your bio ends every 'I told you so' argument.

Bring your people Co-signing takes 30 seconds and puts the co-signer on the record too, so friends share it.

Check-back day The take comes due on a date you chose. Settling it in public, hit or miss, keeps people coming back.

3.How it works for real

Wallets: Privy embedded wallets on Base so posters and co-signers can sign with email or passkey, plus Basenames for readable authors.

Takes as attestations: Each take is an EAS attestation on Base holding the text hash, check-back date and conviction; the full text and evidence link are pinned to IPFS.

Badge contract: A small ERC-1155 contract mints the take badge and records co-sign and counter-take links. Co-sign gas is sponsored with a Base paymaster.

Indexer: A Convex backend indexes attestations and mints to build track record pages and the weekly digest.

Spam weighting agent: A small model tier (for example a Claude Haiku class model through OpenRouter) flags bursts of fresh wallets and links counter-takes; the counting rule itself is deterministic and public.

Notifications: One weekly email or Farcaster frame digest of takes coming due, respecting mutes.

4.Cost per use and pricing

Base gas for a mint or attestation is usually around one US cent or less, but it varies with network load; sponsored co-signs cost the same. The spam agent runs only on bursts, a fraction of a cent per check. Example: 1,000 takes and 8,000 co-signs a month is roughly $60 to $120 in gas plus about $25 for hosting and email. Check current Base fees before pricing.

Free $0

Post up to 5 takes a month, co-sign anything, public track record page.

Verified page $15 per month

Unlimited takes, custom domain track record page, export, and a verified badge for analysts and writers.

Community $300 per month

Branded instance for a research group or newsletter with its own take wall, moderation tools and leaderboards.

5.Growth loop

Every take is a link, and every co-sign asks someone to share it. Settled takes produce a screenshot-worthy card. Analysts who build a record link it from their bios, which brings their readers in to co-sign.

6.Risks and guardrails

Harmful or defamatory takes: Text hashes are permanent onchain. Keep full text offchain so the front end can hide takes that break a published content policy, and never put names of private people in takes.

Gambling rules: No money rides on a take. Adding stakes would make it a prediction market with its own legal rules in many countries; keep it out.

Sybil co-signs: Fresh wallets are cheap. Weight co-signs by wallet age and Basename and show unverified counts separately instead of hiding them.

Self-grading: Authors settle their own takes. Counter-takes and co-signer notes keep this honest, and the page shows who settled what.

Gas spikes: Sponsored co-signs can get expensive under load. Set a monthly paymaster cap and queue co-signs when it is hit.

7.Build order

Write a take, sign it with a Privy wallet, attest it with EAS on Base.
Mint the badge and show a public take page with a share card.
Co-sign with sponsored gas and show co-sign stickers.
Counter-takes linked to the original.
Check-back reminders and settle as called, missed or note.
Track record page with wallet-age weighting.

8.Where this is going

Now
A barbershop argument gets settled with a signed, dated take and a wall of co-signs.
Next
Analysts and writers link verified track record pages instead of follower counts.
Later
Newsrooms and research groups run their own take walls and publish their hit rates.
Far
Public talk rewards people who are right early and honest when wrong, because the record is open to everyone.

Costs and tools are estimates at the time of writing. General information only, not legal or financial advice.

OWNER PLAYBOOK

Own it, then chart your voyage

Nine routes from one vessel. Tap a port to open its chart.

Why own Proof of Opinion

Proof of Opinion lets you put your name on a take onchain, mint it as a shareable badge, and let others co-sign it. Post your calls on a social app and the record can be deleted, buried or locked behind someone else's feed. Own it on Base and your track record of takes, your co-signers and your brand live under your wallet, provable forever.

What’s stopping you?

“I can't code.”

You do not need to. You pick the name, logo and color, and the app is ready to post takes, mint badges and collect co-signs on Base.

“What if my take is wrong, forever?”

That is the point and the risk. A public record of wrong takes is also proof you are honest. Post takes you are willing to stand behind, and add follow up notes when you learn something.

“Will anyone co-sign?”

Not at first, unless you ask. Start by asking 5 people who already agree with you to co-sign your first take. Co-signs grow from people you already talk to.

“Can people use it to post harmful claims?”

It is your instance, so you set the rules. Keep posting open to your community only at first, write a short content policy, and hide badges that break it from your front end.

“Is it really mine?”

Yes. Deployed from your wallet on Base, under your domain. The takes and badges are onchain and not tied to any platform account.

The million-dollar ladder

Small mint fees on each badge and co-sign, paid creator pages for analysts and writers who want a verified track record, and branded instances for media and research brands. The ladder below is a target, not a promise.

$50

$2,250

$18,000

$85,000

Your circle posts and co-signs

10 posters

$5 per month in mints each

Analysts pay for a verified track record page

150 analysts

$15 per month

Research communities on group plans

60 communities