Pith Number

pith:4PAHRAZP

pith:2009:4PAHRAZPMPSWGYQ4LRNVPL5U73

not attested not anchored not stored refs pending

Fermi Large Area Telescope Observations of the Crab Pulsar and Nebula

et al, The Fermi LAT collaboration, the Fermi Pulsar Timing Consortium: A.A. Abdo

arxiv:0911.2412 v1 · 2009-11-12 · astro-ph.HE

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{4PAHRAZPMPSWGYQ4LRNVPL5U73}

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	2026-05-18T03:48:02.068424Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

e3c078832f63e563621c5c5b57afb4fef5797f569fc3d917c62f1009938eec62

Aliases

arxiv: 0911.2412 · arxiv_version: 0911.2412v1 · doi: 10.48550/arxiv.0911.2412 · pith_short_12: 4PAHRAZPMPSW · pith_short_16: 4PAHRAZPMPSWGYQ4 · pith_short_8: 4PAHRAZP

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/4PAHRAZPMPSWGYQ4LRNVPL5U73 \
  | 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: e3c078832f63e563621c5c5b57afb4fef5797f569fc3d917c62f1009938eec62

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "0182b3cf6d23fbbc6e75ead046454fdc6956a4c7126bb9c3aef3daf1028a83b9",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.HE",
    "submitted_at": "2009-11-12T19:25:25Z",
    "title_canon_sha256": "29b34aa4d0467061b1db949eaade2b2a0fb3e34f402ddbf25e266bfb00cbaa0b"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0911.2412",
    "kind": "arxiv",
    "version": 1
  }
}