Pith Number

pith:P2BYEOVY

pith:2009:P2BYEOVYZLETSWOU6KUNAUGG3Y

not attested not anchored not stored refs pending

The ultraviolet flare at the center of the elliptical galaxy NGC 4278

(2) INAF, A. Beifiori (1), A. Cardullo (1), A. Pizzella (1), E. Dalla Bont\`a (1), E. M. Corsini (1), F. Bertola (1) ((1) Dipartimento di Astronomia, Italy, Italy), L. M. Buson (2), L. Morelli (1), Osservatorio Astronomico di Padova, Universit\`a degli Studi di Padova

arxiv:0909.4048 v1 · 2009-09-22 · 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{P2BYEOVYZLETSWOU6KUNAUGG3Y}

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	2026-05-18T02:11:45.241919Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

7e83823ab8cac93959d4f2a8d050c6de3b226257434b4f7402a95285861be268

Aliases

arxiv: 0909.4048 · arxiv_version: 0909.4048v1 · doi: 10.48550/arxiv.0909.4048 · pith_short_12: P2BYEOVYZLET · pith_short_16: P2BYEOVYZLETSWOU · pith_short_8: P2BYEOVY

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/P2BYEOVYZLETSWOU6KUNAUGG3Y \
  | 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: 7e83823ab8cac93959d4f2a8d050c6de3b226257434b4f7402a95285861be268

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "01edfbb3131f5f8f069a32471bbb0a4aa09cd2ff16a5ffa9112954ee5d35fec6",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2009-09-22T17:23:44Z",
    "title_canon_sha256": "f4b282a7978bc5d34a300a0b6918bac333e82bea7e1272a4afc5de83e5316f4d"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0909.4048",
    "kind": "arxiv",
    "version": 1
  }
}