Pith Number

pith:XX7CVVGA

pith:2010:XX7CVVGAEBEL3TGYC47QKZLIZ7

not attested not anchored not stored refs pending

Ca-intercalated graphite as a hydrogen storage material: stability against decomposition into calcium hydride and graphite

Charles R. Wood, Michael J. Gillan, Neal T. Skipper

arxiv:1001.4923 v2 · 2010-01-27 · cond-mat.mes-hall

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{XX7CVVGAEBEL3TGYC47QKZLIZ7}

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	2026-05-18T02:09:29.299646Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

bdfe2ad4c02048bdccd8173f056568cfe3734885b24236334f54e37732663374

Aliases

arxiv: 1001.4923 · arxiv_version: 1001.4923v2 · doi: 10.48550/arxiv.1001.4923 · pith_short_12: XX7CVVGAEBEL · pith_short_16: XX7CVVGAEBEL3TGY · pith_short_8: XX7CVVGA

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/XX7CVVGAEBEL3TGYC47QKZLIZ7 \
  | 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: bdfe2ad4c02048bdccd8173f056568cfe3734885b24236334f54e37732663374

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "c6815647149895be190de595a04b808f614fba263c6395bf93af4360f5ae33bb",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cond-mat.mes-hall",
    "submitted_at": "2010-01-27T12:16:43Z",
    "title_canon_sha256": "e4d5cf80134829c067df8f2bd89036bfd5cb30c55465f598bb0a23225135d171"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1001.4923",
    "kind": "arxiv",
    "version": 2
  }
}