There's a legit need for tampering, though - to arbitrate disputes between creditors and debtors. Also to comply with the Fair Credit Reporting Act. So there's

There's a legit need for tampering, though - to arbitrate disputes between creditors and debtors. Also to comply with the Fair Credit Reporting Act. So there's four parties that contribute to the document: 1. Credit applicants, who release all-or-none of their credit report information, and can see it at any point in time. Means it needs to be stored encrypted with their public key. 2. Creditors, who can add, edit, and remove information from someone's credit report. Presumably this adds a way to verify that the addition/edit/deletion is from them and not some other party (sign with private key). 3. Other creditors, who can - with approval - view an applicant's credit report and know it is complete and up-to-date. 4. Arbitrator, who resolves disputes and deletes or corrects inaccurate information from reports. And presumably you'd want some sort of additional safety mechanism to prevent dissemination of the unencrypted result? Like, if you gave an organization an unlock code, maybe it's possible to arrange things such that that organization's private key is able to create legit-looking data, so nobody else could trust third-party sharing of credit report data?