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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.

Are Smoothies Actually Healthy?

Cozy Game Diary · 10 Oct 2026

Stamp ID
STAMP-2026-1010-3ZECJSIJ
Content hash
32e3648db1c0d4e4ab125de97ef342ba62c5fb35cb5902b3a84eca8fb7843154
Day recorded
2026-10-11
Articles recorded that day
15
Attestation UID
0xe7374a439adaae60fa76c479707b4cb8715b94c18650f7e4be153f5afd862a6a
View on EAS
Transaction
0x31cb8434022ddab43a418971f60ad5a9c23200c1edf7c788f7e5a9f9b4bd03c0
View on Basescan
Stamped
11 Oct 2026

Recorded on Base using canonicalization v2 and record format v1.

How this article reaches the blockchain

It was combined with the other 14 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
0x654460d404ae7d5b2892dd53073d9cc5c70294204e0c9731e2f773e024e9d636

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
    0x5e630a111beb082be868b074909f1d52f4d136d927962f35f0c6639dc3bd7d47
    0xcaba437799ecd5306433bceebbbf2f65663bba473705793cc8031bc93e748756
  2. Step 2, combined with the value after it
    0xc3eb348931fff18a7b7fb65151790984674ffd1547e2a42a7941afabd59aa809
    0xd71669495b15132484309582fa3f7bf6626dabc1ed049fc5158fa7ef5366a475
  3. Step 3, combined with the value after it
    0xb393c447ccb3f707e81d3e404b724241afe1db1541be2ba7b03a3a0be6b1a5e3
    0x8086bb1bd2adda0b1c3a80e77552522391f792a41c4ef9e68468bb92da74d1a8
  4. Step 4, combined with the value after it
    0x5bf8781649ca53a6f507b6207273c32bf93eaefedab539b5ef5b50ccd4c743ef
    0x815430e2a00179e7b99823b21562548a6ed5521009efbd974ba470d1b529c64b

    This is the value for the whole day.

Value these steps arrive at
0x815430e2a00179e7b99823b21562548a6ed5521009efbd974ba470d1b529c64b

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
0x815430e2a00179e7b99823b21562548a6ed5521009efbd974ba470d1b529c64b
Read from Base
0x815430e2a00179e7b99823b21562548a6ed5521009efbd974ba470d1b529c64b
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":"harvesthealth","position":1,"role":"solo","weight":1.0000}],"body":{"content":[{"content":[{"text":"Kale smoothie for me!","type":"text"}],"type":"paragraph"}],"type":"doc"},"disclo…

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-2026-1010-3ZECJSIJ/canonical" | shasum -a 256

    Should print 32e3648db1c0d4e4ab125de97ef342ba62c5fb35cb5902b3a84eca8fb7843154

  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-2026-1010-3ZECJSIJ CONTENT=32e3648db1c0d4e4ab125de97ef342ba62c5fb35cb5902b3a84eca8fb7843154 DIGEST=$(printf '%s' "$STAMP" | shasum -a 256 | cut -d' ' -f1) printf '00%s%s' "$DIGEST" "$CONTENT" | xxd -r -p | shasum -a 256

    Should print 654460d404ae7d5b2892dd53073d9cc5c70294204e0c9731e2f773e024e9d636

  3. 3. Combine step 1

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

    printf '01%s%s' "5e630a111beb082be868b074909f1d52f4d136d927962f35f0c6639dc3bd7d47" "654460d404ae7d5b2892dd53073d9cc5c70294204e0c9731e2f773e024e9d636" | xxd -r -p | shasum -a 256

    Should print caba437799ecd5306433bceebbbf2f65663bba473705793cc8031bc93e748756

  4. 4. Combine step 2

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

    printf '01%s%s' "caba437799ecd5306433bceebbbf2f65663bba473705793cc8031bc93e748756" "c3eb348931fff18a7b7fb65151790984674ffd1547e2a42a7941afabd59aa809" | xxd -r -p | shasum -a 256

    Should print d71669495b15132484309582fa3f7bf6626dabc1ed049fc5158fa7ef5366a475

  5. 5. Combine step 3

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

    printf '01%s%s' "d71669495b15132484309582fa3f7bf6626dabc1ed049fc5158fa7ef5366a475" "b393c447ccb3f707e81d3e404b724241afe1db1541be2ba7b03a3a0be6b1a5e3" | xxd -r -p | shasum -a 256

    Should print 8086bb1bd2adda0b1c3a80e77552522391f792a41c4ef9e68468bb92da74d1a8

  6. 6. Combine step 4

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

    printf '01%s%s' "8086bb1bd2adda0b1c3a80e77552522391f792a41c4ef9e68468bb92da74d1a8" "5bf8781649ca53a6f507b6207273c32bf93eaefedab539b5ef5b50ccd4c743ef" | xxd -r -p | shasum -a 256

    Should print 815430e2a00179e7b99823b21562548a6ed5521009efbd974ba470d1b529c64b

  7. 7. 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/0xe7374a439adaae60fa76c479707b4cb8715b94c18650f7e4be153f5afd862a6a

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

Read the specification