Pith Number

pith:ML27U7HT

pith:2015:ML27U7HTQDGWI4XLXI3ZMG3IGJ

not attested not anchored not stored refs pending

Cosmological scalar field perturbations can grow

Alberto Diez-Tejedor, Axel de la Macorra, Jos\'e M. Torres, Miguel Alcubierre

arxiv:1501.06918 v2 · 2015-01-27 · 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{ML27U7HTQDGWI4XLXI3ZMG3IGJ}

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	2026-05-18T01:32:30.293815Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

62f5fa7cf380cd6472ebba37961b683278c9b9a5f3196d684e54d62e8b6e0ebc

Aliases

arxiv: 1501.06918 · arxiv_version: 1501.06918v2 · doi: 10.48550/arxiv.1501.06918 · pith_short_12: ML27U7HTQDGW · pith_short_16: ML27U7HTQDGWI4XL · pith_short_8: ML27U7HT

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/ML27U7HTQDGWI4XLXI3ZMG3IGJ \
  | 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: 62f5fa7cf380cd6472ebba37961b683278c9b9a5f3196d684e54d62e8b6e0ebc

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "34cd31ce867ed4a0fc05f8f4d8d4319b3a7e1ba9297f1920261a373a53ed2dad",
    "cross_cats_sorted": [
      "astro-ph.CO",
      "hep-th"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "gr-qc",
    "submitted_at": "2015-01-27T21:00:22Z",
    "title_canon_sha256": "aec797afbfc43af0261d206919175a6c74211bba49a83bdb93c6af38e4f387a2"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1501.06918",
    "kind": "arxiv",
    "version": 2
  }
}