Pith Number

pith:IG2EQGVU

pith:2013:IG2EQGVUFCK5RMDX5MAGDNG2FB

not attested not anchored not stored refs pending

Quantum cosmology and late-time singularities

A. Yu. Kamenshchik

arxiv:1307.5623 v2 · 2013-07-22 · 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{IG2EQGVUFCK5RMDX5MAGDNG2FB}

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	2026-05-18T03:15:05.539510Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

41b4481ab42895d8b077eb0061b4da28698d131b81b1301e24f0c17526cf4b95

Aliases

arxiv: 1307.5623 · arxiv_version: 1307.5623v2 · doi: 10.48550/arxiv.1307.5623 · pith_short_12: IG2EQGVUFCK5 · pith_short_16: IG2EQGVUFCK5RMDX · pith_short_8: IG2EQGVU

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/IG2EQGVUFCK5RMDX5MAGDNG2FB \
  | 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: 41b4481ab42895d8b077eb0061b4da28698d131b81b1301e24f0c17526cf4b95

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "e6a486acf6f417c9c0259574123f9c8f1cfcee86e413e40d17ef532b7cc66dfd",
    "cross_cats_sorted": [
      "hep-th"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "gr-qc",
    "submitted_at": "2013-07-22T09:05:01Z",
    "title_canon_sha256": "bd03c24ed7412d6477cd5e45cc8e4d520f31a916070fd8e1c921b7894ef32e99"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1307.5623",
    "kind": "arxiv",
    "version": 2
  }
}