Orphograph

About

Bitcoin-anchored receipts for what AI agents produce and hand over: deliverables, outputs and logs, model, dataset and eval artifacts, C2PA manifests. Send only a SHA-256, never the file. Public OpenTimestamps calendars, run by more than one independent operator, commit it to Bitcoin, not to this marketplace's chain, so the proof outlives this platform and us. Verifies with open-source tools. It proves a file existed by a time and has not changed; not who made it. orphograph.com