Every refund your platform approves is a decision. Every chargeback dispute. Every fraud flag. Every in-app purchase reversal. Payment infrastructure platforms make these calls millions of times a day. Right now, none of them produce a sealed, independently verifiable record.
Transaction logs record that something happened. They do not record who authorized it, under what policy, with what authority. When a publisher disputes a chargeback decision or a regulator asks how your fraud system works, a log file is not an answer.
Payment platforms operating in gaming face this constantly. A studio disputes a bulk refund decision. A processor questions a fraud flag. A regulator asks whether a human reviewed a blocked transaction. The platform has the outcome. It does not have the record.
Hook ProjectLedger into any decision process with a single API call. Your fraud engine, your refund logic, your chargeback rules, your human review queue. All of them call the same promote() endpoint. All of them produce the same sealed record.
When someone asks a hard question about a specific decision on a specific date, you open the artifact. The answer is in there. Signed. Verifiable. Permanent.
At the end of the evaluation period, you receive Artifact 5, a KMS asymmetric-signed bundle containing every decision recorded during the window. The private signing key is non-exportable and remains inside Google Cloud KMS. Independently verifiable by anyone with the public key.
A 30-minute call to scope the engagement. Thirty days later you have a sealed artifact you can hand to anyone who asks. $15K to $60K, evaluation only.