Pith Number

pith:62KUN2QY

pith:2008:62KUN2QY5T3IYWEDXKW2DOPH4J

not attested not anchored not stored refs pending

The Holst Spin Foam Model via Cubulations

Aristide Baratin, Cecilia Flori, Thomas Thiemann

arxiv:0812.4055 v3 · 2008-12-21 · gr-qc

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{62KUN2QY5T3IYWEDXKW2DOPH4J}

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	2026-05-18T02:15:04.091825Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

f69546ea18ecf68c5883baada1b9e7e2610cab008975488b58a4702033e25cc6

Aliases

arxiv: 0812.4055 · arxiv_version: 0812.4055v3 · doi: 10.48550/arxiv.0812.4055 · pith_short_12: 62KUN2QY5T3I · pith_short_16: 62KUN2QY5T3IYWED · pith_short_8: 62KUN2QY

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/62KUN2QY5T3IYWEDXKW2DOPH4J \
  | 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: f69546ea18ecf68c5883baada1b9e7e2610cab008975488b58a4702033e25cc6

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "bde34fad5c50883798a5be062d757a94042fb1847ae24141fa6defb3ac6ab708",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "gr-qc",
    "submitted_at": "2008-12-21T19:52:38Z",
    "title_canon_sha256": "becdc131e68726bd66a2718ff78f76f6dc916a56624ac758098bb094dbf7c4f8"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0812.4055",
    "kind": "arxiv",
    "version": 3
  }
}