Pith Number

pith:EHPLSFKZ

pith:2009:EHPLSFKZXQ5X2PSBKRRRW3ATYO

not attested not anchored not stored refs pending

Alternatives to Cosmological Inflation

IHEP), Robert H. Brandenberger (McGill

arxiv:0902.4731 v1 · 2009-02-27 · hep-th · astro-ph.CO · gr-qc · hep-ph

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{EHPLSFKZXQ5X2PSBKRRRW3ATYO}

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.

Cited by

1 paper in Pith

Constraints on the inflationary vacuum and reheating era from NANOGrav

Receipt and verification

First computed	2026-05-18T02:14:38.496357Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

21deb91559bc3b7d3e4154631b6c13c3bbb105c9b4683ce95bed718938729901

Aliases

arxiv: 0902.4731 · arxiv_version: 0902.4731v1 · doi: 10.48550/arxiv.0902.4731 · pith_short_12: EHPLSFKZXQ5X · pith_short_16: EHPLSFKZXQ5X2PSB · pith_short_8: EHPLSFKZ

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/EHPLSFKZXQ5X2PSBKRRRW3ATYO \
  | 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: 21deb91559bc3b7d3e4154631b6c13c3bbb105c9b4683ce95bed718938729901

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "11d9ca7733448eb1555aff3ab188d95effa71ef2c8c51dd0dc276f03f34339bb",
    "cross_cats_sorted": [
      "astro-ph.CO",
      "gr-qc",
      "hep-ph"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "hep-th",
    "submitted_at": "2009-02-27T00:07:05Z",
    "title_canon_sha256": "2bfdb2f153c3e26c8e5e4b64752cb6a25ae4cbe8c4b69f722239d43f70559548"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0902.4731",
    "kind": "arxiv",
    "version": 1
  }
}