Yes and: tamper evident. > Some examples are logs of participation Yes and: Medical records. While working in healthcare IT, mid-2000s, our records would be

Yes and: tamper evident. > Some examples are logs of participation Yes and: Medical records. While working in healthcare IT, mid-2000s, our records would be used to show who knew what when. There was a general uneasiness that our source of truth was just database entries and log files. I had somehow heard about using rolling hashes in log files. As you well know, then if any entries had errors (bad code, tampering, whatever), we'd be more likely to spot them. I managed to implement a prototype, before our startup was acquihired and our products shutdown (sniff). Sadly, none of the new PHBs understood or were interested in all the cool tech we had created. Then some time later people started talking about slapping RFID and QR onto everything. Because hospitals are like a fight pit, with belligerents from different orgs and corps, coming and going, we thought to use a shared (tamper evident) audit log. aka blockchain. Sadly, that too didn't come to pass on our watch. Beyond shared audit logs -- stuff like PoW/PoS, currency, whatever -- doesn't made any sense to me. I eventually decided it's all grift, though I'd be happy to proven wrong.