Proof of Opinion
Put your name on a take onchain, mint a shareable badge, others co-sign.
Credit that doubles every thirty on time days, backed by people who believe in you.
Try it live, freeYour line starts at ten dollars and doubles every thirty days you pay on time. Backers fund one person and earn most of the fee. A missed day resets the streak in public.
The full app from Terry's Arc portfolio: live surface, contracts on Arc, about page, handover of code and deployment.
Reshape it entirely: new features, your flows, your brand end to end, integrations you need. We scope it with you.
Streak based credit lines backed by named people were not found.
Goldfinch; off chain thin file lenders.
Checked with web searches in October 2026. A search is not proof that nothing similar exists, and the market moves fast, so we recheck before every build.
Answers Arc's Request for Builders; check current terms.
The complete Streak app: credit that starts small and doubles every thirty on time days, backed by named people, with a paywall, owner console and watcher agent built in.
Every buyer gets the same finished app. Basic branding and copy changes come through a quick form.
Your admin side: revenue, paywall editor, users, rules and the agent log.
Referral and growth mechanics, switched on when you are ready to grow.
Borrowers pay a small fee per thirty day cycle; most of it goes to their backers and the rest to the owner. Plus plans add supplier and lender tools, and co-ops pay to run Streak for members.
Cycle fee of 2 to 5% on the line, with 60 to 90% shared to backers, set by the owner. Arc gas is a fraction of a cent per daily repayment.
Prices are yours to set. Illustrative, not a promise of income.
Credit that doubles every thirty on time days, backed by people who believe in you.
Problem: Small traders without a credit history pay steep rates or borrow from lenders who shame them, while the people who believe in them have no simple way to help.
Solution: A tiny starting line on Arc that doubles each cycle of daily on time repayments, funded by named backers who share the fee and see the streak, with grace days and an honest reset.
Why now: Arc's USDC native, sub second settlement makes daily micro repayments cheap, and mobile money ramps reach traders directly.
Market: Kiosk owners, boda riders and market traders across East Africa, and the savings groups and co-ops they belong to.
The ask: Pilot partners: one market association in Kisumu and one mobile money ramp, plus Arc and Circle developer programs.
Funding is never guaranteed. Check each program's rules.
Many hackathons require code written at the event. See the Regatta Boardfor each race's rule.
Custom work from $2,500: your own line ladder and fee split, a local mobile money ramp, extra languages or a co-op branded deployment. Scoped on a call.
Hundreds of millions of small traders have years of steady trade but no payslip or credit file. Banks say no and app lenders charge punishing monthly rates. What they lack is a way to show reliability that people can see and fund.
Undercollateralized onchain credit exists: Goldfinch lends through offchain lenders to thin file borrowers, and many offchain lenders score mobile money history. Our research did not find a credit line that doubles on each 30 day on time streak and is funded by named personal backers who see the streak. The parts (credit lines, social underwriting, USDC rails) are known; the streak mechanic and named backer pool are the new combination. Novelty is high but unproven at scale.
Per borrower: wallet address, line size, cycle number, daily repayment events and a streak counter onchain. Backer pool deposits and fee splits onchain. Name, phone, identity check and the reason for any late day stay with the operator and the backers' private chat.
Let anyone earn credit by showing up every day, backed by the people who already believe in them.
One square a day A 30 square calendar that fills with each payment. Thirty in a row is something you made, and the next doubling date is always visible.
Named backers, not a score Your aunt, your old teacher, a regular customer. They see the streak, and that quiet attention is the strongest reminder there is.
Honest reset A missed day resets in public, and grace days cover storms and sick days when you say so. Fair rules make people stay.
Wallets: Embedded wallets (for example Privy or Circle Wallets) for borrowers and backers, so no seed phrases. Gas on Arc is paid in USDC.
Line contract on Arc: One contract per borrower holds the backer pool in USDC, the current line, the cycle and the streak counter. The line is min(start x 2^cycles, ceiling, pool). Draws and daily repayments settle with sub second finality.
Fiat rails: A licensed on and off ramp partner converts local mobile money (for example M-Pesa) to USDC. A payment started before the deadline counts as pending, not missed.
Watcher agent: A small model tier (for example a Haiku or GPT mini class model via OpenRouter) writes reminders and the weekly backer note. It reads chain and ramp state only; it holds no keys.
Indexer and notifications: An indexer (for example a Ponder or Goldsky subgraph) feeds the app, plus WhatsApp or SMS notifications at the borrower's chosen hour.
Identity: A light KYC check through the ramp partner, and backers invite borrowers by link, so every line starts with real people who know each other.
Per daily repayment: Arc gas is a fraction of a cent in USDC (testnet today; check mainnet fees at launch). Ramp fees are the larger cost, often 1 to 2% per conversion. Watcher messages use a small model at well under $0.001 each. Example month for 1,000 active borrowers: about 30,000 repayments, roughly $30 to $60 of gas and models, plus hosting around $50, before ramp fees.
Each borrower brings two or three backers, and backers who watch a clean streak often back a second person. Share cards of long streaks travel in family and market group chats. Co-ops, savings groups and market associations can run their own Streak for members.
Lending rules: Credit and pooled backer funds are regulated in most countries. Launch with a licensed local lender or co-op partner and get legal advice per market.
Backers can lose money: A borrower may never repay. The app must say plainly that backing is support, not an investment, with no promised return.
Public shame: A public reset can hurt. Only backers see the name; the public sees an address. Grace days and a private reason field soften real life.
Ramp delays: Mobile money conversion can lag. Pending payments started before the deadline count, and false misses are reversible by the watcher's evidence.
Collusion: Fake backers could pump a line. The ceiling, KYC through the ramp and a cap per backer limit the damage.
Costs and tools are estimates at the time of writing. General information only, not legal or financial advice.
Nine routes from one vessel. Tap a port to open its chart.
Streak: Credit that doubles every thirty on time days, backed by people who believe in you. Using someone else's version means their rules, their brand and their revenue. Owning Streak means it is deployed under your wallet, carries your name, and every customer, partner and result builds your track record instead of theirs.
Streak arrives deployed with a guide. Running it is settings and sharing links, not code. If you get stuck, we help you ship it.
Start with ten people you already know. The first move below takes under an hour and tells you fast whether people care.
Each step is sized in minutes. Most owners spend an hour a week, and the app does the repetitive part.
Nothing is guaranteed. The playbook gives you a clear path and honest numbers, and you decide how far to take it.
Charge the people who get the most value from Streak: a monthly plan for groups or teams, plus setup fees for anyone who wants it done for them.
Illustrative stages, not a forecast. Results depend on you and the market; nothing here is guaranteed.
A starter chart. A fuller, app-specific playbook is being written.
Put your name on a take onchain, mint a shareable badge, others co-sign.
Create an account and prove your transactions in your own browser. Client-side proving on Miden, nothing leaks.
Prove your trading discipline, not your profits: stops honored, sizing kept, tilt avoided.
Caregivers and parents prove unpaid care work, privately, for loans and jobs.
Recruiters pay a small USDC fee to request verified proofs from candidates, who get paid.
Mentees attest that you changed their path, building a lineage tree of who you lifted up.
Prove you are over 18, a resident, or a degree holder without showing a single document.
Timestamp every hour of deliberate practice and own the 10,000 hour proof.