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Verified on Base

This article has not changed since Vitahash recorded it on the Base blockchain. Everything below can be checked without taking our word for any of it.

AI vs Blockchain

Chayakrit Krittanawong, MD, FACC, FAHA, FSCAI · 20 Sept 2026

Stamp ID
STAMP-2026-0920-GLU3CILY
Content hash
c98d93dbbf3f49aef884c684282604a72354df640a56511724589c51a7f13c43
Day recorded
2026-09-20
Articles recorded that day
18
Attestation UID
0x1ed0b640723183fed258fb97c6562ff95da0496d1406e14653e12c062865f9d3
View on EAS
Transaction
0x7b9fdc49a1760db010f3985639be208da0d433b5b3f9fa84e64abdaa135d36d6
View on Basescan
Stamped
21 Sept 2026

Recorded on Base using canonicalization v2 and record format v1.

How this article reaches the blockchain

It was combined with the other 17 articles published that day, one step at a time, until the whole day became a single value. That one value is what Vitahash wrote to the blockchain. Change a single character of this article and the starting value below changes, so none of the steps would land on the recorded one.

Starting value for this article
0xbed55eca4591e5bd3f6227c35353df6bef843782caeb331798ed9df0c5ead0b0

Built from this article's content hash and its stamp ID, as sha256(0x00 || sha256(utf8(stampId)) || contentHash).

  1. Step 1, combined with the value before it
    0x1bf46932746651ea3065ec8350ad55c38c9882ef3b0a7360ab231d1efd0ec3ce
    0x2544de35a4de67f9861a894e1a2eed77c03547acb509e6b8af67a233143738ac
  2. Step 2, combined with the value before it
    0x55efe9c5ee1a98cc9194ca6df5c4bf2a9a53b4e50d9ad3ea34bf27437915d567
    0x604c8251ec88e064e22355a066f4db7fea15afe24d6ee73fac3f907cdf446997

    This is the value for the whole day.

Value these steps arrive at
0x604c8251ec88e064e22355a066f4db7fea15afe24d6ee73fac3f907cdf446997

What the blockchain says

Two values, reached two different ways. The one above was worked out from this article. The one below was read back from the record on Base.

Worked out from this article
0x604c8251ec88e064e22355a066f4db7fea15afe24d6ee73fac3f907cdf446997
Read from Base
0x604c8251ec88e064e22355a066f4db7fea15afe24d6ee73fac3f907cdf446997
Read it yourself on EAS

They are the same value, so this article was published that day with exactly the text above.

Check it yourself

Every number on this page came from Vitahash. Copy the article's exact text below and check it against the hash above, using any SHA-256 tool.

{"abstract":null,"agreement":false,"authors":[{"identity":"Drkrittanawong","position":1,"role":"solo","weight":1.0000}],"body":{"content":[{"content":[{"text":"Everyone is now focused on AI’s enormous potential.","type":"text"},{"type":"har…

Copy this text, paste it into any SHA-256 tool, and compare the result with the hash shown above. If the two match, this is exactly what Vitahash recorded.

For a technical reader: the terminal route

  1. 1. Hash the article yourself

    This downloads the exact text Vitahash hashed, in the exact form it hashed it, and hashes it again on your machine. Nothing Vitahash wrote runs here.

    curl -s "https://api.vitahash.org/api/verify/STAMP-2026-0920-GLU3CILY/canonical" | shasum -a 256

    Should print c98d93dbbf3f49aef884c684282604a72354df640a56511724589c51a7f13c43

  2. 2. Build this article's starting value

    The stamp ID is folded in with the hash, so one article's record can never stand in for another's.

    STAMP=STAMP-2026-0920-GLU3CILY CONTENT=c98d93dbbf3f49aef884c684282604a72354df640a56511724589c51a7f13c43 DIGEST=$(printf '%s' "$STAMP" | shasum -a 256 | cut -d' ' -f1) printf '00%s%s' "$DIGEST" "$CONTENT" | xxd -r -p | shasum -a 256

    Should print bed55eca4591e5bd3f6227c35353df6bef843782caeb331798ed9df0c5ead0b0

  3. 3. Combine step 1

    The published value goes first, then the value you have.

    printf '01%s%s' "1bf46932746651ea3065ec8350ad55c38c9882ef3b0a7360ab231d1efd0ec3ce" "bed55eca4591e5bd3f6227c35353df6bef843782caeb331798ed9df0c5ead0b0" | xxd -r -p | shasum -a 256

    Should print 2544de35a4de67f9861a894e1a2eed77c03547acb509e6b8af67a233143738ac

  4. 4. Combine step 2

    The published value goes first, then the value you have.

    printf '01%s%s' "55efe9c5ee1a98cc9194ca6df5c4bf2a9a53b4e50d9ad3ea34bf27437915d567" "2544de35a4de67f9861a894e1a2eed77c03547acb509e6b8af67a233143738ac" | xxd -r -p | shasum -a 256

    Should print 604c8251ec88e064e22355a066f4db7fea15afe24d6ee73fac3f907cdf446997

  5. 5. Compare with the blockchain

    The last value above is what the whole day came to. Read the record on Base and check its merkleRoot field is the same. Vitahash is not involved in this step at all.

    https://base.easscan.org/attestation/view/0x1ed0b640723183fed258fb97c6562ff95da0496d1406e14653e12c062865f9d3

The rules these commands follow are written down in full, so anyone can reimplement them.

Read the specification