signed tree head
The issuer's signature over the root hash and size of a transparency log at a point in time. Inclusion proofs are checked against it, and two signed tree heads can be compared to prove the log only grew.
What signed tree head means
A signed tree head is a commitment; the protection comes from outside parties keeping and comparing them.
Where signed tree head comes up on this site
- How an AI agent should verify a website before acting on itAn inclusion proof shows the answer was in the log; a signed tree head commits to the whole log, so the publisher cannot quietly show different people different answers.
Terms this definition uses
transparency log · inclusion proof
Definitions that name signed tree head
Related terms in Proof and provenance
Showing a record existed at a date without asking anyone to trust us.
transparency log · inclusion proof · log witness · split-view attack · cite-as link · as-of answer · citation anchor · canonical origin · signed absence · threshold verdict · OpenTimestamps · anchoring · Content hash · Manifest tampering · C2PA · CAWG training and data mining assertion · content-addressed storage · Merkle tree · SHA-256 · daily seal · byline · dateline · trust center
Questions about signed tree head
What is signed tree head?
The issuer's signature over the root hash and size of a transparency log at a point in time. Inclusion proofs are checked against it, and two signed tree heads can be compared to prove the log only grew.
What does signed tree head not show or guarantee?
Inclusion proofs are checked against it, and two signed tree heads can be compared to prove the log only grew.
Which area of the glossary does signed tree head belong to?
Proof and provenance: Showing a record existed at a date without asking anyone to trust us.
← transparency log · inclusion proof →
See it in the full glossary · 731 terms across 19 areas.