Pith Number

pith:NBMVQS5I

pith:2012:NBMVQS5IRA4I7A5HOOQ6OZ5DVT

not attested not anchored not stored refs pending

On topological restrictions of the spacetime in cosmology

J. Krol, T. Asselmeyer-Maluga

arxiv:1206.4796 v1 · 2012-06-21 · gr-qc · astro-ph.CO · 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{NBMVQS5IRA4I7A5HOOQ6OZ5DVT}

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	2026-05-18T03:50:08.890272Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

6859584ba888388f83a773a1e767a3acf3cc73155cd3189820d0317b03b88bc8

Aliases

arxiv: 1206.4796 · arxiv_version: 1206.4796v1 · doi: 10.48550/arxiv.1206.4796 · pith_short_12: NBMVQS5IRA4I · pith_short_16: NBMVQS5IRA4I7A5H · pith_short_8: NBMVQS5I

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/NBMVQS5IRA4I7A5HOOQ6OZ5DVT \
  | 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: 6859584ba888388f83a773a1e767a3acf3cc73155cd3189820d0317b03b88bc8

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "fbabf32f8394fb6f37e61a9be7d44281aba20e21c9fca82f8bd48f5ef1a9980c",
    "cross_cats_sorted": [
      "astro-ph.CO",
      "hep-th"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "gr-qc",
    "submitted_at": "2012-06-21T07:20:02Z",
    "title_canon_sha256": "c760f57577f183a0cc31e37b651b259e4c24cbea2500e6beec44f261140c32bd"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1206.4796",
    "kind": "arxiv",
    "version": 1
  }
}