Pith Number

pith:Q4H3USJY

pith:2012:Q4H3USJYY2VK6DD2YX6AY5I2DT

not attested not anchored not stored refs pending

Discrete Gravity Models and Loop Quantum Gravity: a Short Review

James P. Ryan, Maite Dupuis, Simone Speziale

arxiv:1204.5394 v2 · 2012-04-24 · 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{Q4H3USJYY2VK6DD2YX6AY5I2DT}

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	2026-05-18T03:48:58.802825Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

870fba4938c6aaaf0c7ac5fc0c751a1cc3aa9b00125240c1d15791f5925907e6

Aliases

arxiv: 1204.5394 · arxiv_version: 1204.5394v2 · doi: 10.48550/arxiv.1204.5394 · pith_short_12: Q4H3USJYY2VK · pith_short_16: Q4H3USJYY2VK6DD2 · pith_short_8: Q4H3USJY

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/Q4H3USJYY2VK6DD2YX6AY5I2DT \
  | 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: 870fba4938c6aaaf0c7ac5fc0c751a1cc3aa9b00125240c1d15791f5925907e6

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "6abfceee4425d525ee08d051b2956146d5fff38b0e9f8218e4e16874a8cfe5af",
    "cross_cats_sorted": [],
    "license": "http://creativecommons.org/licenses/by-nc-sa/3.0/",
    "primary_cat": "gr-qc",
    "submitted_at": "2012-04-24T14:49:29Z",
    "title_canon_sha256": "5a1ea9e4650fd7842586e48214cd37f2a5393eda1227c59c85f5dccabb516645"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1204.5394",
    "kind": "arxiv",
    "version": 2
  }
}