Pith Number

pith:FN544WRY

pith:2011:FN544WRYVTOLZBPRJM5LOB7GME

not attested not anchored not stored refs pending

X-ray selected Narrow-Line Seyfert 1 Galaxies

A. Caccianiga, A. Corral, E. Marchese, P. Severgnini, R. Della Ceca, R. Fanali

arxiv:1105.5234 v1 · 2011-05-26 · 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{FN544WRYVTOLZBPRJM5LOB7GME}

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	2026-05-18T04:21:13.003288Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

2b7bce5a38acdcbc85f14b3ab707e6612a6728eb62235e22a8869da838dfd3cb

Aliases

arxiv: 1105.5234 · arxiv_version: 1105.5234v1 · doi: 10.48550/arxiv.1105.5234 · pith_short_12: FN544WRYVTOL · pith_short_16: FN544WRYVTOLZBPR · pith_short_8: FN544WRY

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/FN544WRYVTOLZBPRJM5LOB7GME \
  | 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: 2b7bce5a38acdcbc85f14b3ab707e6612a6728eb62235e22a8869da838dfd3cb

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "613b11a1f71d407bd8ac1f1bccb29c6c9e42eb8b1499491894e92adba3ea6a01",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2011-05-26T08:58:53Z",
    "title_canon_sha256": "9652fc77e29bddc6c3706ac457911432d5a38d297bbdf17d5c36154845d8bd7c"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1105.5234",
    "kind": "arxiv",
    "version": 1
  }
}