The check before a payment goes out · by Rizqey Labs · Solana devnet
The check that runs before your AI agents pay someone.
Tiba checks every payment an AI agent wants to make. Two separate checks look at each one: one reads the bill, the other reads the payer's own record. If they don't match, the payment is refused. Every decision leaves a public receipt.
Once agents pay bills, the bill itself becomes the attack. The check that reads your record is never shown the bill, and the amount paid always comes from your record, so a fake or padded bill can't raise it.
A real example
0.01 USDC sent on Solana devnet on 11 Sep 2026. No real money moved.
The live receipt cannot be opened while the database is unavailable.
Every check, paid or refused, gets a public receipt anyone can open by link.
Two checks, then a receipt
01
one check reads the bill
02
one check reads your record
03
refused if they don't match
04
public receipt
How it works
01
You keep a record of what you owe: the job, the amount, the payee.
02
When a bill comes in, Tiba reads it and checks it against your record before anything is signed.
03
If it names a different job or payee, it refuses. Otherwise it pays the amount your record approved, never the bill's. You get a receipt either way.
One check reads the bill. The other reads the payer's own record and is never shown the bill. They have to name the same job and the same amount.
If they don't match, Tiba refuses the payment. If they match, it can go out. Either way there is a public receipt. Test money only — Solana devnet, no real money.
Signed outcomes
A payment the two checks agree on leaves a public receipt. The live examples are Solana devnet.
See the wall of checks →A payment the two checks don't agree on is refused before anything is sent. That refusal has a public receipt too.
Try a mismatched bill →Who this is for
Communities and grant programs on Solana that pay contributors and bounties. An agent pays a contributor; Tiba reads the claim against the bounty and the record, pays or refuses, leaves a receipt either way.
One check, any rail
Solana · home rail. Where Tiba already runs, and where it won Superteam Malaysia's Solana Lab.
Tempo · proof. Built by Stripe and Paradigm, fees paid in the stablecoin itself. Built and tested, not live — for contractors and suppliers too.
Zcash · proof. Payments hidden by default, a viewing key for the auditor. Built and tested, not live — for private payroll and grants too.