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Cryptographic Attestation

Grip Strength, Gait Speed, and Stair Climb: Do They Predict Longevity?

Ledger hash verified in your browser
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What this proves

When this article was published, a named physician, Dr. Jacob Egbert, D.O., reviewed and approved the medical content. Authoritize then sealed it: its exact wording was run through SHA-256 to produce a unique fingerprint (the content hash). Change a single character of the article and that fingerprint changes completely.

That fingerprint was then locked into an append-only chain: each article's record carries the fingerprint of the one before it, so the whole publishing history is tamper-evident. Silently editing an older article would break every link that came after it.

Finally, an independent timestamp authority co-signed when the fingerprint existed, so the date can't be backdated. Your browser just recomputed the chain link from the values below to confirm this record is internally consistent, no need to take our word for it.

Who verifies what

Dr. Jacob Egbert, D.O. is responsible for the medical accuracy of this article. Authoritize provides the cryptographic seal, the chain, and the independent timestamp. It verifies that the content has not changed since the physician approved it. It does not author or endorse the clinical content.

The attestation

Reviewing physician

Dr. Jacob Egbert, D.O. (NPI 1932316304)

Attested at

Article version

1

Compliance scanner ruleset

v1.2.0

Cryptographic proof

Content hash (SHA-256)
eb3ce6dd47ef248068f25ec94ccf9f0194f94a14538a0572cca1e2a285a61c6d
Content digest
b8e94f12f3accf5de6ac75497ea00bdaa60b751e441353a938074dacad98e49d
Previous record
50b8415c1aefaa830cd506ae8c667f374024d6d275b28038ad72307162e93cf4
Chain hash
ddcaa8f05e0454bf29f960733920139c869d19227f6dcea7fb2c86be69ea62e4

Ledger hash verified in your browser

Your browser computed SHA-256(previous record + content hash) and got ddcaa8f05e04…, matching the chain hash on record.

This article's place in the ledger

This article links to the one published before it, forming an unbroken chain.

50b8415c1aef…this article · eb3ce6dd47ef…next…

Third-party timestamp

An RFC 3161 trusted timestamp was issued by http://timestamp.digicert.com. This token independently proves the content hash existed at the time embedded inside it, and it cannot be backdated.

Show the raw RFC 3161 token (base64)
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

This attestation was sealed and timestamped by Authoritize, the content integrity platform for physician-led healthcare brands.

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