Pith Number

pith:27GUYPIQ

pith:1999:27GUYPIQRIV6XF2XIPPQLVVCSK

not attested not anchored not stored refs pending

Ab Initio Calculation of Spin Gap Behavior in CaV4O9

C. Stephen Hellberg, Harold T. Stokes, L. L. Boyer, Michael J. Mehl, W. E. Pickett

arxiv:cond-mat/9901255 v1 · 1999-01-24 · cond-mat.mtrl-sci · cond-mat.str-el

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{27GUYPIQRIV6XF2XIPPQLVVCSK}

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	2026-07-04T16:12:13.061194Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

d7cd4c3d108a2beb975743df05d6a292902dc3867134b4e82d51437c1edf3aa9

Aliases

arxiv: cond-mat/9901255 · arxiv_version: cond-mat/9901255v1 · doi: 10.48550/arxiv.cond-mat/9901255 · pith_short_12: 27GUYPIQRIV6 · pith_short_16: 27GUYPIQRIV6XF2X · pith_short_8: 27GUYPIQ

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/27GUYPIQRIV6XF2XIPPQLVVCSK \
  | 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: d7cd4c3d108a2beb975743df05d6a292902dc3867134b4e82d51437c1edf3aa9

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "e3cf57c6758c1e51b9468e1849b0668b6b1796582a2dbc16bbd55d617fd07615",
    "cross_cats_sorted": [
      "cond-mat.str-el"
    ],
    "license": "",
    "primary_cat": "cond-mat.mtrl-sci",
    "submitted_at": "1999-01-24T21:25:19Z",
    "title_canon_sha256": "ca4638b1264042d18250ff2073ae5284a263e898254422fd62f26c845f3ad627"
  },
  "schema_version": "1.0",
  "source": {
    "id": "cond-mat/9901255",
    "kind": "arxiv",
    "version": 1
  }
}