Verify the milestone before the release. Not after the audit.
Most public-sector construction disbursement runs on invoice trust. Keystone's Disbursement Rail moves verification from forensic audit to release-time gate. Funds still flow through your existing federal / state / Treasury / fiscal-agent payment rails; Keystone signs the release authorization. Immutable audit trail every Inspector General can query directly.
Public-sector construction disbursement runs on invoice trust.
A contractor claims a milestone. A program office reviews the invoice. If the paperwork looks right and the budget is sufficient, the fiscal agent releases funds. Verification of whether the milestone actually occurred happens forensically in Inspector General audit, sometimes years later, on a sample basis.
This is why federal drawdown consistently lags scheduled deployment (see the IIJA drawdown analysis). Programs slow deliberately because verification is behind, not ahead of, the release. Every month of lag is a month of program impact deferred.
Verify at release-time. Sign the authorization. Preserve the audit trail.
- 01
Asset is registered with signed lifecycle state.
Every module or unit in the program flows into Keystone's Module Registry with signed state changes (raw → certified → completed → installed → in-service).
- 02
Program office requests a milestone release.
The request references specific asset IDs and a specific milestone claimed. The request format matches your existing disbursement submission process.
- 03
Disbursement Rail validates state + budget in one API call.
Validates the registered asset's state matches the claimed milestone. Validates remaining program budget covers the request. Returns HTTP 200 with a signed release authorization or HTTP 422 with a specific reason for denial.
- 04
Funds flow through your existing payment rail.
The signed authorization is submitted to your existing Treasury / state fiscal-agent / HFA disbursement system. Keystone never holds or moves customer funds.
- 05
Every release becomes a permanent audit record.
Every authorization references a specific asset record, a specific verified state transition, and a specific timestamp. Any Inspector General or program auditor can query directly by release ID and reconstruct the full chain.
Where verified-release fits.
| Program | Existing payment rail | Milestone gate |
|---|---|---|
| State HFA multifamily / single-family | State fiscal agent ACH | Module installed on foundation |
| HUD CDBG-DR (disaster recovery) | Treasury Fiscal Service | Unit certified for occupancy |
| IIJA infrastructure drawdown | Treasury Fiscal Service | Milestone specific to program |
| IRA §45X manufacturing credit | IRS refundable-credit path | Domestic-content provenance |
| DOE Loan Programs Office | Treasury Fiscal Service | Construction milestone verification |
Bring 25 to 100 historical releases. Simulate the gate on your program.
The six-week design-partner pilot ingests a set of your historical disbursement releases with the state attestations that gated them, then produces the actual verified-release simulation as if Keystone had gated them in real time. Written outcome brief. Zero platform fee during pilot.