TimeProofs – Prove when data existed without uploading it

Hacker News

Hi HN, I built TimeProofs, an open, privacy-first protocol to prove when a piece of data existed — without uploading the content. You generate a hash locally, get a signed timestamp, and store a portable .tproof.json file. Verification can be done later, online or offline. No blockchain. No accounts. No tracking. Just cryptographic proof. This is v0.2 (stateless, bundle-based). Looking for feedback from devs and infra folks. Docs: https://timeproofs.io Protocol: https://timeproofs.io/proofspec.html

Visit product View on Hacker NewsDec 31, 2025

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Did not reach leaderboard

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Hacker NewsStrong engagement from HN community · Strong signals: exist, io · Missing: https docs, excited, just released

64%64% predicted probability of success on Hacker News, based on ML models trained on real launch data.

nativeThis product was originally launched on this platform.

Indie HackersIH features products with proven revenue · Missing: supports, reddit linkedin, podcasting

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38%38% predicted probability of success on AppSumo, based on ML models trained on real launch data.

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32%32% predicted probability of success on Product Hunt, based on ML models trained on real launch data.

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29%29% predicted probability of success on TrustMRR, based on ML models trained on real launch data.

Acquire.comPre-revenue stage for this audience · Missing: arr, mrr, revenue

14%14% predicted probability of success on Acquire.com, based on ML models trained on real launch data.

BetaListMay not resonate with beta-testers · Strong signals: crypto · Missing: web3, chat, cryptocurrency

5%5% predicted probability of success on BetaList, based on ML models trained on real launch data.

Incorrect prediction on native model

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