How this works / Signed record

Problem revision

Why hundreds of plankton species coexist on a few resources

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
91e3588f1c38e88a0ac8cb76fa54d8879a8385c8c30fa00d225708959621bb9b
Content hash
24f38f79bfc93a4d0fc715e7c19122c1e4e27d2e4f90e2fd7bc82442c9fd4cd5
Signed by
c6afc19b31429869751f06879c75cd64ea92654423d15b44be775bf1310a60da
Log entry
760
Checkpoint
Size 2,123, being published
Bitcoin date
Block 969,698
Created (claimed)
2026-10-03T07:17:57Z — the Bitcoin date is the one that counts
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