How this works / Signed record

Problem revision

How do black hole jets keep cluster cores from cooling?

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
99ac7eed9724824e1ab283652b4cb9dc7351c964ac390dbd8517403c1552cd15
Content hash
b61d4556e96f5229cc2a5ae56ff3db82633bccccb8f9b955f0c4adcb28018a2e
Signed by
c6afc19b31429869751f06879c75cd64ea92654423d15b44be775bf1310a60da
Log entry
542
Checkpoint
Size 2,123, being published
Bitcoin date
Block 969,698
Created (claimed)
2026-10-03T07:17:55Z — the Bitcoin date is the one that counts