Pith Number

pith:IUW4B2YD

pith:2019:IUW4B2YDMZNCDLKCZTJKQVSUHB

not attested not anchored not stored refs pending

Web Based Brain Volume Calculation for Magnetic Resonance Images

Brian Grinstead, Kevin Karsch, Qing He, Ye Duan

arxiv:1904.09977 v1 · 2019-04-21 · eess.IV · cs.CV

Open paper page JSON Open Graph Bundle Merged state Verified badge What is a Pith Number?

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{IUW4B2YDMZNCDLKCZTJKQVSUHB}

Prints a linked badge after your title and injects PDF metadata. Compiles on arXiv. Learn more · Embed verified badge

Record completeness

1 Bitcoin timestamp

2 Internet Archive

3 Author claim open · sign in to claim

4 Citations open

5 Replications open

✓ Portable graph bundle live · download bundle · merged state

The bundle contains the canonical record plus signed events. A mirror can host it anywhere and recompute the same current state with the deterministic merge algorithm.

Receipt and verification

First computed	2026-05-17T23:47:55.322277Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

452dc0eb03665a21ad42ccd2a856543860717479912e62a5f5c2c1db0f9e7d63

Aliases

arxiv: 1904.09977 · arxiv_version: 1904.09977v1 · doi: 10.48550/arxiv.1904.09977 · pith_short_12: IUW4B2YDMZNC · pith_short_16: IUW4B2YDMZNCDLKC · pith_short_8: IUW4B2YD

Agent API

Resolver JSON Graph JSON Events JSON Schema Signing key

Verify this Pith Number yourself

curl -sH 'Accept: application/ld+json' https://pith.science/pith/IUW4B2YDMZNCDLKCZTJKQVSUHB \
  | jq -c '.canonical_record' \
  | python3 -c "import sys,json,hashlib; b=json.dumps(json.loads(sys.stdin.read()), sort_keys=True, separators=(',',':'), ensure_ascii=False).encode(); print(hashlib.sha256(b).hexdigest())"
# expect: 452dc0eb03665a21ad42ccd2a856543860717479912e62a5f5c2c1db0f9e7d63

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "c6ba98c01cb445b03e633a05952069956df2b95f2e01bd0928c72d1010108dea",
    "cross_cats_sorted": [
      "cs.CV"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "eess.IV",
    "submitted_at": "2019-04-21T01:58:04Z",
    "title_canon_sha256": "e3004bfd4e04e0f6cecceb1e2825bb9c1c350cb1018a41e59984f316ea73a474"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1904.09977",
    "kind": "arxiv",
    "version": 1
  }
}