How this works / Signed record

Problem revision

What is the arrival-time distribution of a free quantum particle?

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
512ff0c0ef5c94000c6f24a857c76f3c07a7bc5b8a97063b5d9f794e7a53e311
Content hash
0c5c77710dd5112db51e2bd6d112b50bb2608aec8bdcc7ca79648f29253ef4c8
Signed by
c6afc19b31429869751f06879c75cd64ea92654423d15b44be775bf1310a60da
Log entry
2,057
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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