Pith Number

pith:53QFCZ5G

pith:2011:53QFCZ5GGUIEZFW2JEVR7FYA6X

not attested not anchored not stored refs pending

Gamma-Rays from Radio Galaxies: Fermi-Lat Observations

Paola Grandi (INAF/IASFBO) (for the FERMI-LAT Collaboration)

arxiv:1112.2505 v1 · 2011-12-12 · 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{53QFCZ5GGUIEZFW2JEVR7FYA6X}

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	2026-07-04T23:54:45.009170Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

eee05167a635104c96da492b1f9700f5e5b366a0566c8baf6718269a9872ce16

Aliases

arxiv: 1112.2505 · arxiv_version: 1112.2505v1 · doi: 10.48550/arxiv.1112.2505 · pith_short_12: 53QFCZ5GGUIE · pith_short_16: 53QFCZ5GGUIEZFW2 · pith_short_8: 53QFCZ5G

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/53QFCZ5GGUIEZFW2JEVR7FYA6X \
  | 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: eee05167a635104c96da492b1f9700f5e5b366a0566c8baf6718269a9872ce16

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "f05a8880e3646a43404c6e39bf8a301cd41553f13887b44ba88ad9a944ed517e",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.HE",
    "submitted_at": "2011-12-12T10:49:27Z",
    "title_canon_sha256": "c9cd5e5cb0c4c6a2d469e6d2d9a25b8409d45a92a667a5b3dce83e9bbd533c1c"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1112.2505",
    "kind": "arxiv",
    "version": 1
  }
}