This product was not featured by Product Hunt yet. It will not be visible on their landing page and won't be ranked (cannot win product of the day regardless of upvotes).
SPIF packages a prompt, model metadata, tool calls, retries, and agent handoffs into one signedspif artifact you verify offline, no network trust service needed. CBOR-chunked binary, Ed25519 sign/multi-sign, checksum tamper detection. Benchmarked against real provenance systems: vs in-toto, roughly tied on verify, 8% smaller payload. Vs Sigstore keyless, ~417x faster verify (no network/transparency-log round trip). Open source, Apache-2.0.
Hey PH! Multi-step AI pipelines (model, tool call, retry, agent handoff) lose the trail once you flatten everything down to text or JSON logs. After the fact you can't answer "what produced this, was it changed, can I prove it." SPIF packages that whole trail into one signed, offline-verifiable artifact.
I benchmarked it against real provenance systems, not just plain JSON. Against in-toto's signed DSSE envelope, it's roughly tied on verify speed with an 8% smaller payload. Against Sigstore's keyless signing, it's about 417x faster on verify since it skips the network and transparency-log round trip by design.
I tried to be upfront about the gaps too. No public transparency log like Sigstore/Rekor, no policy language like in-toto.
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About SPIF on Product Hunt
“Signed, tamper-evident provenance for AI outputs”
SPIF was submitted on Product Hunt and earned 0 upvotes and 1 comments, placing #143 on the daily leaderboard. SPIF packages a prompt, model metadata, tool calls, retries, and agent handoffs into one signedspif artifact you verify offline, no network trust service needed. CBOR-chunked binary, Ed25519 sign/multi-sign, checksum tamper detection. Benchmarked against real provenance systems: vs in-toto, roughly tied on verify, 8% smaller payload. Vs Sigstore keyless, ~417x faster verify (no network/transparency-log round trip). Open source, Apache-2.0.
SPIF was featured in Developer Tools (519k followers), Artificial Intelligence (478.1k followers), GitHub (41.4k followers) and Security (2.9k followers) on Product Hunt. Together, these topics include over 236.9k products, making this a competitive space to launch in.
Who hunted SPIF?
SPIF was hunted by Kalinov jim rozensky Dameus. A “hunter” on Product Hunt is the community member who submits a product to the platform — uploading the images, the link, and tagging the makers behind it. Hunters typically write the first comment explaining why a product is worth attention, and their followers are notified the moment they post. Around 79% of featured launches on Product Hunt are self-hunted by their makers, but a well-known hunter still acts as a signal of quality to the rest of the community. See the full all-time top hunters leaderboard to discover who is shaping the Product Hunt ecosystem.
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Kalinov jim rozensky Dameus