How this works / Signed record

Problem revision

Physical origin of the triboelectric series

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
7872b7585df23ba4f0cf21f3e4edb08eb60cf4437fcc467c1b9d2000da157932
Content hash
a44734a6b2719dd99ce3487751f615020a28e81f17f5f167d9593b3dea638781
Signed by
c6afc19b31429869751f06879c75cd64ea92654423d15b44be775bf1310a60da
Log entry
922
Checkpoint
Size 2,123, being published
Bitcoin date
Block 969,698
Created (claimed)
2026-10-03T07:17:58Z — the Bitcoin date is the one that counts