How this works / Signed record

Problem revision

Is the 2025 OTOC(2) quantum echo experiment beyond classical simulation

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
d9766d2def81f693ce002d4d53a3f092dbf9c8eef4cff13d031ee256aa4f1035
Content hash
c6d1b3014e1e54f2c2479a11b89115d90c1b2920e15d1a17a29084de43b84cb7
Signed by
c6afc19b31429869751f06879c75cd64ea92654423d15b44be775bf1310a60da
Log entry
2,062
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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