Credits & billing
Kist is pay-as-you-go and postpaid. Anchoring and verification consume credits; there is no subscription and no upfront charge. You are invoiced for what you actually used.
How credits work
1
Use
Each anchor or verification deducts credits as it happens.
2
Track
Metered usage is recorded against your client id in real time.
3
Pay later
You are invoiced monthly for the credits you consumed.
Costs
| Operation | Endpoint | Model |
|---|---|---|
| Anchor a proof | POST /anchor | credits per successful anchor |
| Batch anchor | POST /anchor/batch | credits per record |
| Verify a proof | POST /verify | credits per verification |
| Capture App capture | on device | Free — always |
The Capture App is free
End users never pay and never see credits. Metering applies only to programmatic API use.
Checking your balance
GET
/credits/balanceCurrent balance, total spent, and per-op costsGET
/credits/usageRecent metered usage eventsGET
/credits/transactionsCredit ledger (adds and deductions)POST
/credits/checkPre-flight whether an operation can proceedkist creditsBalance: 9,120 credits · spent 18,880