Verify

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.

Stamp ID
STAMP-2026-1006-XFUP5SKB
Content hash
51269084554a60344b0464998e7f89b1afb4c56e035b710ca1899017a309a37f
Day recorded
2026-10-07
Articles recorded that day
16
Attestation UID
0x2838e247dcdc03d7e5d3def4582bb14c0fd666fbfbca325ed921536c8267f446
View on EAS
Transaction
0x70789bf19e02a7f6c3d6d64f551810889fee56d00e65909f037a2b329b146784
View on Basescan
Stamped
7 Oct 2026

Recorded on Base using canonicalization v2 and record format v1.

How this article reaches the blockchain

It was combined with the other 15 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
0x59c737c14d5d93945fbf15a4bb8fe1db04d7dc2c9933897727f066b176824fa0

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 after it
    0xf3f1f2a066329afd62b142e2e47e099486f7667a8f88d1f1cc36f40809862bf2
    0xbcf54ab2636424f1e853a7c69b882c58a0aeeebec929ec580bf973248b9486a5
  2. Step 2, combined with the value after it
    0x2bf764040cf67035272097f69ca93bec9ebb114731d7d8ec0f562db19b797d2b
    0xd5b9b4566485f5e1f6b2b59ab8e5516516b2fc730f99ea98521b18bb5d9f3100
  3. Step 3, combined with the value before it
    0xb54fc78079cf370c2062960424dc717bec7cbc877726a66bea6b0bc364e9eca0
    0xf7a52ff416ea618bf777fa9a60ce33e8df0053120825188265e8c19eb17cd3a4
  4. Step 4, combined with the value before it
    0x531a6b70abcbe82e2280a36686fb422b2bf4ab51dc08735d24801f65a0ebcbf5
    0xfd9e684812519ac6d8c98f64d83e894da5011da68f6f62f5262cf66b04b0ac07

    This is the value for the whole day.

Value these steps arrive at
0xfd9e684812519ac6d8c98f64d83e894da5011da68f6f62f5262cf66b04b0ac07

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
0xfd9e684812519ac6d8c98f64d83e894da5011da68f6f62f5262cf66b04b0ac07
Read from Base
0xfd9e684812519ac6d8c98f64d83e894da5011da68f6f62f5262cf66b04b0ac07
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":"mayahale","position":1,"role":"solo","weight":1.0000}],"body":{"content":[{"content":[{"text":"JPMorgan CEO Jamie Dimon says Anthropic’s Mythos has pushed cyber risk up 10x, highlig…

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-2026-1006-XFUP5SKB/canonical" | shasum -a 256

    Should print 51269084554a60344b0464998e7f89b1afb4c56e035b710ca1899017a309a37f

  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-2026-1006-XFUP5SKB CONTENT=51269084554a60344b0464998e7f89b1afb4c56e035b710ca1899017a309a37f DIGEST=$(printf '%s' "$STAMP" | shasum -a 256 | cut -d' ' -f1) printf '00%s%s' "$DIGEST" "$CONTENT" | xxd -r -p | shasum -a 256

    Should print 59c737c14d5d93945fbf15a4bb8fe1db04d7dc2c9933897727f066b176824fa0

  3. 3. Combine step 1

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

    printf '01%s%s' "59c737c14d5d93945fbf15a4bb8fe1db04d7dc2c9933897727f066b176824fa0" "f3f1f2a066329afd62b142e2e47e099486f7667a8f88d1f1cc36f40809862bf2" | xxd -r -p | shasum -a 256

    Should print bcf54ab2636424f1e853a7c69b882c58a0aeeebec929ec580bf973248b9486a5

  4. 4. Combine step 2

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

    printf '01%s%s' "bcf54ab2636424f1e853a7c69b882c58a0aeeebec929ec580bf973248b9486a5" "2bf764040cf67035272097f69ca93bec9ebb114731d7d8ec0f562db19b797d2b" | xxd -r -p | shasum -a 256

    Should print d5b9b4566485f5e1f6b2b59ab8e5516516b2fc730f99ea98521b18bb5d9f3100

  5. 5. Combine step 3

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

    printf '01%s%s' "b54fc78079cf370c2062960424dc717bec7cbc877726a66bea6b0bc364e9eca0" "d5b9b4566485f5e1f6b2b59ab8e5516516b2fc730f99ea98521b18bb5d9f3100" | xxd -r -p | shasum -a 256

    Should print f7a52ff416ea618bf777fa9a60ce33e8df0053120825188265e8c19eb17cd3a4

  6. 6. Combine step 4

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

    printf '01%s%s' "531a6b70abcbe82e2280a36686fb422b2bf4ab51dc08735d24801f65a0ebcbf5" "f7a52ff416ea618bf777fa9a60ce33e8df0053120825188265e8c19eb17cd3a4" | xxd -r -p | shasum -a 256

    Should print fd9e684812519ac6d8c98f64d83e894da5011da68f6f62f5262cf66b04b0ac07

  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/0x2838e247dcdc03d7e5d3def4582bb14c0fd666fbfbca325ed921536c8267f446

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

Read the specification