Pith Number

pith:LUYBVOMW

pith:2009:LUYBVOMWWN6PBB4NA2F536GOYR

not attested not anchored not stored refs pending

Fermi Discovery of Gamma-Ray Emission from NGC 1275

A. B. Pushkarev, et al, H.D. Aller, K.I. Kellermann, M.F. Aller, M. L. Lister, The Fermi/LAT Collaboration: A. A. Abdo, Y.A. Kovalev, Y.Y. Kovalev

arxiv:0904.1904 v1 · 2009-04-13 · astro-ph.HE · astro-ph.CO

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{LUYBVOMWWN6PBB4NA2F536GOYR}

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	2026-05-18T03:48:02.720618Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

5d301ab996b37cf0878d068bddf8cec478b52c85c81b44444101f30fcc194340

Aliases

arxiv: 0904.1904 · arxiv_version: 0904.1904v1 · doi: 10.48550/arxiv.0904.1904 · pith_short_12: LUYBVOMWWN6P · pith_short_16: LUYBVOMWWN6PBB4N · pith_short_8: LUYBVOMW

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/LUYBVOMWWN6PBB4NA2F536GOYR \
  | 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: 5d301ab996b37cf0878d068bddf8cec478b52c85c81b44444101f30fcc194340

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "305a635137d18715e1d15bff0c83157739dba475d5c621fa0d7d4fe5b66ae4a5",
    "cross_cats_sorted": [
      "astro-ph.CO"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.HE",
    "submitted_at": "2009-04-13T04:44:01Z",
    "title_canon_sha256": "43e11378cb2f41c84580ce1497d12ec4e494360918be2f1d46185a38d8481ece"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0904.1904",
    "kind": "arxiv",
    "version": 1
  }
}