ProofPack: hash-locked delivery receipts for AI client work

ProofPack, a new tool from an anonymous developer, offers hash-locked delivery receipts for AI-assisted client work, allowing agencies and freelancers to timestamp and freeze deliverables before revisions. The MVP is live with a free tier of three receipts and paid plans starting at $39 per month.

Agencies and freelancers increasingly ship AI-assisted work. The deliverable is often a prompt, a model output, and some surrounding context — but the handoff lives in email, Slack, or a shared doc. When a client asks “what exactly did we get?” you’re reconstructing history from chat logs. That’s an operational problem, not a cryptography problem. Still, a simple cryptographic receipt helps: lock the bytes, stamp the time, share one artifact. ProofPack turns that bundle into a timestamped, hash-locked delivery receipt: Think packing slip, not notarization. No special magic beyond hashing and packaging. The value is the workflow: one place to freeze “what we delivered” before the next revision cycle. Agencies and freelancers who want delivery transparency with clients — fewer ambiguous handoffs, clearer scope conversations after AI-assisted revisions. ProofPack is a transparency / delivery-receipt tool. It is not legal advice. It is not a compliance certification. It is not court attestation. If you need legal or regulatory assurance, talk to a lawyer or auditor. MVP is live. Free tier: 3 receipts . Planned paid: Starter $39/mo , Pro $79/mo . https://getproofpack.vercel.app https://getproofpack.vercel.app