Pith Number

pith:ELB7LEW2

pith:2002:ELB7LEW2WHHHTHSXFNBIFLS2AY

not attested not anchored not stored refs pending

A simultaneous XMM-Newton and BeppoSAX observation of the archetypal Broad Line Seyfert 1 galaxy NGC 5548

(2) UCLA, (3) Universita di Roma Tre), G. C. Perola (3) ((1) University of Leicester, G. Matt (3), J. N. Reeves (1), K. A. Pounds (1), K. L. Page (1), R. Edelson (2)

arxiv:astro-ph/0210288 v2 · 2002-10-14 · astro-ph

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{ELB7LEW2WHHHTHSXFNBIFLS2AY}

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	2026-05-18T04:17:53.791069Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

22c3f592dab1ce799e572b4282ae5a063197640c874df541522cd37c03805553

Aliases

arxiv: astro-ph/0210288 · arxiv_version: astro-ph/0210288v2 · doi: 10.48550/arxiv.astro-ph/0210288 · pith_short_12: ELB7LEW2WHHH · pith_short_16: ELB7LEW2WHHHTHSX · pith_short_8: ELB7LEW2

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/ELB7LEW2WHHHTHSXFNBIFLS2AY \
  | 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: 22c3f592dab1ce799e572b4282ae5a063197640c874df541522cd37c03805553

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "c28aa06896ff4d80dd537a68935ebfd939c42a0150a7a1f31749a5d1dc10de1c",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "2002-10-14T08:47:21Z",
    "title_canon_sha256": "77fea94e8263aa74bb4c5ba53fdc0c4a597a765233ba259b99bd7c247d8f035c"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/0210288",
    "kind": "arxiv",
    "version": 2
  }
}