Dinau that both sides agree on.
Dinau Buk is the shared book for book-up and small loans. Lend to a wantok or let a customer book up at the store, and the amount, the date and every repayment sit in one record both of you can see — with online repayment through BSP Pay.
Sign in with your PNG phone number — a one-time code arrives on WhatsApp, or by SMS if WhatsApp cannot reach you. No password, no app store. Lenders and borrowers see the same record from their own phones.
Trust is easier when the numbers match.
Store book-up, without the exercise book
A trade store records what a customer takes on credit; the customer sees it on their phone and repays in person or online.
Small loans between people
Lend to a wantok with an amount and a due date. Both sides confirm, and the record cannot be quietly changed by either.
Repay through BSP Pay
Repay from a BSP account or the BM wallet; the balance updates for both sides the moment the payment settles.
Listed lenders
People who lend regularly can list themselves so borrowers know the terms up front. Nambawan lenders earn BM rewards.
Inside the other BM apps
Dinau Buk is built into Konekt, WanBung, Rentim and Bisnis Stoa, so a voucher, pledge, rent or shop credit can be recorded as dinau in one tap.
A record that lasts
Every entry and repayment is kept with who did it and when — useful when memories differ.
Recording and repaying a dinau.
Only the two parties can see a dinau. Balances and due dates are kept on the server; repayments through BM Pay settle exactly once.
- 1Lender records the dinau — amount, borrower's phone number, due date
- 2Borrower gets a WhatsApp message and a notice in the app, and confirms it there
- 3Repay in cash (the lender records it) or online through BSP Pay
- 4Both sides see the balance fall to zero; the history stays
Put Dinau Buk on your phone.
Dinau Buk installs straight from the browser — no Play Store, no App Store, no big download. It opens from your home screen like any app, keeps working on a weak signal, and updates itself.
Install on Android
- Tap the button below (it opens Dinau Buk in Chrome)
- Tap Install on the banner — or ⋮ menu → Add to Home screen
- Find Dinau Buk with your other apps
Add to your iPhone
- Tap the button below (it opens Dinau Buk in Safari)
- Tap Share then Add to Home Screen
- Tap Add — done
Scan with the phone camera to open Dinau Buk and install itLatest version: checking… · Android phones running Chrome 90 or newer and iPhones on iOS 16.4 or newer. On other browsers, open the app and use the browser's "Add to Home screen" option.
Built on the BM rails.
Dinau Buk is live on BM ID and BM Pay. It is a record and a payment channel, not a lender: BM does not lend money in Dinau Buk.
- Blockchain Melanesia is working with the Bank of Papua New Guinea to secure its e-money licence for the BM wallet.
- Payments run through BM Pay on BSP Pay: CIF and mobile OTP, no card details typed into a phone.
- A dinau is only valid once both parties have confirmed it; changes are recorded, never silent.
- Online repayments settle exactly once against the record — no double counting.
- Your phone number is your ID: one-time codes on WhatsApp (SMS if WhatsApp cannot reach you), no passwords, the same BM ID in every BM app.
Askim na bekim
The things people ask before they try it.
Does BM lend the money?
No. Dinau Buk records and settles dinau between people and stores. The lender is always the person or store you deal with.
What does it cost?
Recording a dinau is free. Online repayments carry the small BM Pay fee shown before you pay; cash repayments cost nothing.
Can a store use it for all its customers?
Yes — Bisnis Stoa stores use Dinau Buk as their book-up ledger, and any store can use it on its own.
What if the other person disputes it?
Both sides confirmed it when it was created, and every change is in the history. That record is the point.
Keep the book straight.
Open Dinau Buk, sign in with your number and record your first dinau — or repay one that is waiting for you.
The app currently lives at dinau-buk.netlify.app while this address is set up.