Send a trade or payout before you release it and get back a score, the reasons behind it and a signed decision record; escrow contracts can verify a release on-chain. Build against the free sandbox, then go live with one endpoint and 300 free checks a month.
Email hello@provd.tech: you get a sandbox key to build with and a live key for your server. To see what Provd returns first, try the public counterparty check.