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.

First blog post

dock30 · 15 Aug 2026

Stamp ID
STAMP-2026-0815-M5BCOM5X
Content hash
b80178be07ec7db49a711615ae8fe39b3f732bc398dd7d3b2e7960fb928d6243
Day recorded
2026-08-15
Articles recorded that day
1
Attestation UID
0xbad182b4ab68e74fb2dc03f52e92f464f733f8623513ffa44db868dd98376e9e
View on EAS
Transaction
0x28d21c09c842c2986124a43244ac427111f0628ebade3d86330ccf5f44b5e63f
View on Basescan
Stamped
15 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
0x7f53846f971a5b6c9a70807f6687b634421746820285e2080d7eeed633113ac9

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
0x7f53846f971a5b6c9a70807f6687b634421746820285e2080d7eeed633113ac9

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
0x7f53846f971a5b6c9a70807f6687b634421746820285e2080d7eeed633113ac9
Read from Base
0x7f53846f971a5b6c9a70807f6687b634421746820285e2080d7eeed633113ac9
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":"This is a test","type":"text"}],"type":"paragraph"}],"type":"doc"},"keywords":[],"publishedAt":"2026-08-15…

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-2026-0815-M5BCOM5X/canonical" | shasum -a 256

    Should print b80178be07ec7db49a711615ae8fe39b3f732bc398dd7d3b2e7960fb928d6243

  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-2026-0815-M5BCOM5X CONTENT=b80178be07ec7db49a711615ae8fe39b3f732bc398dd7d3b2e7960fb928d6243 DIGEST=$(printf '%s' "$STAMP" | shasum -a 256 | cut -d' ' -f1) printf '00%s%s' "$DIGEST" "$CONTENT" | xxd -r -p | shasum -a 256

    Should print 7f53846f971a5b6c9a70807f6687b634421746820285e2080d7eeed633113ac9

  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/0xbad182b4ab68e74fb2dc03f52e92f464f733f8623513ffa44db868dd98376e9e

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

Read the specification