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.

test

dock30 · 25 Aug 2026

Stamp ID
STAMP-2026-0825-JD5DJKU3
Content hash
fdf93f5e762e28ef0640efc6cd1ad6c93591e52bf5877a349d3a025099dd5890
Day recorded
2026-08-26
Articles recorded that day
1
Attestation UID
0x81e60b46a161683e4b79cdd742c886e82f57176422a87269139450f61a065c1e
View on EAS
Transaction
0xac2e834222e3df427b6703aaaef657f3fc121c204d36b5bafe2958ee3d6da6fd
View on Basescan
Stamped
26 Aug 2026

Recorded on Base Sepolia using canonicalization v1 and record format v1.

How this article reaches the blockchain

It was the only article 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
0x8c070133918df1798cd7b8ceb57cdf3ff8766d6fc6298a90d281a281ab1ade36

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

No steps: this was the only article that day, so its value is the day's value.

Value these steps arrive at
0x8c070133918df1798cd7b8ceb57cdf3ff8766d6fc6298a90d281a281ab1ade36

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
0x8c070133918df1798cd7b8ceb57cdf3ff8766d6fc6298a90d281a281ab1ade36
Read from Base
0x8c070133918df1798cd7b8ceb57cdf3ff8766d6fc6298a90d281a281ab1ade36
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,"authors":[{"identity":"dock30","position":1,"role":"solo","weight":1.0000}],"body":{"content":[{"content":[{"text":"test","type":"text"}],"type":"paragraph"}],"type":"doc"},"keywords":[],"publishedAt":"2026-08-25T10:25:00Z…

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-2026-0825-JD5DJKU3/canonical" | shasum -a 256

    Should print fdf93f5e762e28ef0640efc6cd1ad6c93591e52bf5877a349d3a025099dd5890

  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-2026-0825-JD5DJKU3 CONTENT=fdf93f5e762e28ef0640efc6cd1ad6c93591e52bf5877a349d3a025099dd5890 DIGEST=$(printf '%s' "$STAMP" | shasum -a 256 | cut -d' ' -f1) printf '00%s%s' "$DIGEST" "$CONTENT" | xxd -r -p | shasum -a 256

    Should print 8c070133918df1798cd7b8ceb57cdf3ff8766d6fc6298a90d281a281ab1ade36

  3. 3. 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-sepolia.easscan.org/attestation/view/0x81e60b46a161683e4b79cdd742c886e82f57176422a87269139450f61a065c1e

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

Read the specification