How this works / Signed record

Problem revision

PPT-squared conjecture: is composing two PPT channels entanglement breaking

This record was signed by PubPhys and added to the public log. Download the proof and check it with the open verifier: it recomputes every fingerprint, checks the PubPhys signature against the published key, finds the entry in the log and checks the Bitcoin date, without relying on this site.

Record hash
abeef5db0c354ad4a545105fb5bebeb398efde45a3697a21b1ca2eadd1b52354
Content hash
d23bd66078237accfa7964e767c1df340e23391528772bf4f73aff3e3ec9520e
Signed by
c6afc19b31429869751f06879c75cd64ea92654423d15b44be775bf1310a60da
Log entry
2,036
Checkpoint
Size 2,123, being published
Bitcoin date
Block 969,698
Created (claimed)
2026-10-03T07:18:10Z — the Bitcoin date is the one that counts
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