Pith Number

pith:J4SNUQII

pith:2004:J4SNUQIIQKALSMVBJXB3PM6FXO

not attested not anchored not stored refs pending

Observational constraints on patch inflation in noncommutative spacetime

Gianluca Calcagni, Shinji Tsujikawa

arxiv:astro-ph/0407543 v2 · 2004-07-27 · astro-ph · gr-qc · hep-ph · 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{J4SNUQIIQKALSMVBJXB3PM6FXO}

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	2026-07-04T14:13:40.838828Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

4f24da41088280b932a14dc3b7b3c5bbbe860c1c62c94c1a408f8e5cbace08b1

Aliases

arxiv: astro-ph/0407543 · arxiv_version: astro-ph/0407543v2 · doi: 10.48550/arxiv.astro-ph/0407543 · pith_short_12: J4SNUQIIQKAL · pith_short_16: J4SNUQIIQKALSMVB · pith_short_8: J4SNUQII

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/J4SNUQIIQKALSMVBJXB3PM6FXO \
  | 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: 4f24da41088280b932a14dc3b7b3c5bbbe860c1c62c94c1a408f8e5cbace08b1

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "34ebaeeb691769620edf5d884b3de6b835bb8f25b6387822e1528c019a0fbc48",
    "cross_cats_sorted": [
      "gr-qc",
      "hep-ph",
      "hep-th"
    ],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "2004-07-27T08:35:20Z",
    "title_canon_sha256": "81539a76b15c34a9f3f505e0b7c3a7cfe1039ff860d86c4e49e9fa6a1de22d36"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/0407543",
    "kind": "arxiv",
    "version": 2
  }
}