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Cryptographic Attestation

What Is TRT? A Complete Guide to Testosterone Replacement Therapy

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)
888e873fe9e49571922866dda63105b6dc0bb70471c65854bacad9effa76af71
Content digest
dbfba666ca6607c9e90db982ef3ba433f35048c300b1cfff1fd9e28fa4445d2a
Previous record
2fa573c6e534c01e46f0bc4ae5d183736041ca5902bb6c2f57dd286ea4c518bb
Chain hash
6f97b81dc3a6355f4cb5b05eceafe7da2762e02230f137d5401ff9c8a89118ff

Ledger hash verified in your browser

Your browser computed SHA-256(previous record + content hash) and got 6f97b81dc3a6…, 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.

2fa573c6e534…this article · 888e873fe9e4…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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