Pith Number

pith:GY7QUNFW

pith:2001:GY7QUNFWOZFLZOECO2P75XMNKR

not attested not anchored not stored refs pending

X-ray Spectroscopy of QSOs with Broad Ultraviolet Absorption Lines

G. Chartas, G. Garmire (Penn State), S.C. Gallagher, W.N. Brandt

arxiv:astro-ph/0110579 v1 · 2001-10-26 · 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{GY7QUNFWOZFLZOECO2P75XMNKR}

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	2026-05-18T02:40:35.884356Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

363f0a34b6764abcb882769ffedd8d5465113d5fd43997901a16e6260de79388

Aliases

arxiv: astro-ph/0110579 · arxiv_version: astro-ph/0110579v1 · doi: 10.48550/arxiv.astro-ph/0110579 · pith_short_12: GY7QUNFWOZFL · pith_short_16: GY7QUNFWOZFLZOEC · pith_short_8: GY7QUNFW

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/GY7QUNFWOZFLZOECO2P75XMNKR \
  | 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: 363f0a34b6764abcb882769ffedd8d5465113d5fd43997901a16e6260de79388

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "53d7cd55d1ad95b73367703ea636ded218b8e66b901912f761c78ca9cbb55dee",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "2001-10-26T20:00:25Z",
    "title_canon_sha256": "e3e69dfc105594cd46602d23986206fae7ce9e85d394a79da570f9743370ec54"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/0110579",
    "kind": "arxiv",
    "version": 1
  }
}