Pith Number

pith:WJD3FILQ

pith:2011:WJD3FILQ4GUDBKPZFUUNKETZW2

not attested not anchored not stored refs pending

Observational test of inflation in loop quantum cosmology

Gianluca Calcagni, Martin Bojowald, Shinji Tsujikawa

arxiv:1107.1540 v2 · 2011-07-08 · 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{WJD3FILQ4GUDBKPZFUUNKETZW2}

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	2026-05-18T02:21:43.312375Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

b247b2a170e1a830a9f92d28d51279b6a25af50f468a39b4be7acc293c830f31

Aliases

arxiv: 1107.1540 · arxiv_version: 1107.1540v2 · doi: 10.48550/arxiv.1107.1540 · pith_short_12: WJD3FILQ4GUD · pith_short_16: WJD3FILQ4GUDBKPZ · pith_short_8: WJD3FILQ

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/WJD3FILQ4GUDBKPZFUUNKETZW2 \
  | 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: b247b2a170e1a830a9f92d28d51279b6a25af50f468a39b4be7acc293c830f31

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "570fdb5b27bb2758baf74ab22d7b220aae62d3c32a55bb7ba98b127e615b3148",
    "cross_cats_sorted": [
      "astro-ph.CO",
      "hep-th"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "gr-qc",
    "submitted_at": "2011-07-08T00:21:52Z",
    "title_canon_sha256": "2418fb76dd39a3cb2edad20fddbde8d5a404839545673b072ba7de7636982047"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1107.1540",
    "kind": "arxiv",
    "version": 2
  }
}