Pith Number

pith:S4ZN5XO7

pith:2015:S4ZN5XO7IQYKC4PQZAMXHELOB2

not attested not anchored not stored refs pending

Loop quantum gravity coupled to a scalar field

Hanno Sahlmann, Jerzy lewandowski

arxiv:1507.01149 v1 · 2015-07-04 · gr-qc · hep-th

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{S4ZN5XO7IQYKC4PQZAMXHELOB2}

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	2026-05-18T01:21:31.921760Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

9732dedddf4430a171f0c81973916e0e9b60ba3702717ea22b359ff3966ef1e3

Aliases

arxiv: 1507.01149 · arxiv_version: 1507.01149v1 · doi: 10.48550/arxiv.1507.01149 · pith_short_12: S4ZN5XO7IQYK · pith_short_16: S4ZN5XO7IQYKC4PQ · pith_short_8: S4ZN5XO7

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/S4ZN5XO7IQYKC4PQZAMXHELOB2 \
  | 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: 9732dedddf4430a171f0c81973916e0e9b60ba3702717ea22b359ff3966ef1e3

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "f4403d332e1291febc2396014eb89860f1570a1cc5261675ec1efd06ea1238ed",
    "cross_cats_sorted": [
      "hep-th"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "gr-qc",
    "submitted_at": "2015-07-04T21:48:03Z",
    "title_canon_sha256": "0f6fc6a07d71be56fe80b2cf2bf48e25493b0d0ea67ccbdbf678f9275554102f"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1507.01149",
    "kind": "arxiv",
    "version": 1
  }
}