How this works / Signed record

Topic

Black hole interiors and the firewall problem

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
664a771c1e756bb0428148195cdde69ebc0b4bbf43dd7c1a7c99eea1cc6355f5
Content hash
c18c19a2cefb935b408a5a9a3f10fe60b01e19b4541c340f2a13f19d86edaf6a
Signed by
c6afc19b31429869751f06879c75cd64ea92654423d15b44be775bf1310a60da
Log entry
227
Checkpoint
Size 2,123, being published
Bitcoin date
Block 969,698
Created (claimed)
2026-10-03T07:17:51Z — the Bitcoin date is the one that counts