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Cryptographic Attestation

Homocysteine, MTHFR, and B12: Reversible Drivers of Cognitive Decline

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)
5c64d7c130fdabee9e04277aed914c93bc7072321fbbcd887d3bfe7ae45cf1c1
Content digest
3a589707ba693bc94a1ab66a78242385f7c52ef965deb7403c48e8625a3a00f3
Previous record
de0fffba513b3876c5c2a60d803799576f4ac7049d116f42b9cbaa5a14b9a1ad
Chain hash
ea00f30e4bb241d294dbddf41cf72b147c4fe8b13cb926a25495653a75c41954

Ledger hash verified in your browser

Your browser computed SHA-256(previous record + content hash) and got ea00f30e4bb2…, 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.

de0fffba513b…this article · 5c64d7c130fd…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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