Pith Number

pith:NOYZUBJJ

pith:2006:NOYZUBJJCSY2QEBBQH33YZGXV2

not attested not anchored not stored refs pending

The Intrinsically X-ray Weak Quasar PHL 1811. I. X-ray Observations and Spectral Energy Distribution

(2) Columbia University, (3) Princeton University, (4) Pennsylvania State University), Dirk Grupe (4), Edward B. Jenkins (3), Jiehae Choi (1), Jules P. Halpern (2), Karen M. Leighly (1), Kimberly B. Prescott (1) ((1) The University of Oklahoma

arxiv:astro-ph/0611349 v1 · 2006-11-10 · 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{NOYZUBJJCSY2QEBBQH33YZGXV2}

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.

Cited by

1 paper in Pith

Strong X-ray Variability of I Zwicky 1: Obscuration from Clumpy Accretion-Disk Winds

Receipt and verification

First computed	2026-05-18T04:29:15.286424Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

6bb19a052914b1a8102181f7bc64d7aea7af60e3557287c6d73707e04105400f

Aliases

arxiv: astro-ph/0611349 · arxiv_version: astro-ph/0611349v1 · doi: 10.48550/arxiv.astro-ph/0611349 · pith_short_12: NOYZUBJJCSY2 · pith_short_16: NOYZUBJJCSY2QEBB · pith_short_8: NOYZUBJJ

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/NOYZUBJJCSY2QEBBQH33YZGXV2 \
  | 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: 6bb19a052914b1a8102181f7bc64d7aea7af60e3557287c6d73707e04105400f

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "7b5560157e89741609ee8f118b5e20f6a20f692bc364f42befb59a25406f497d",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "2006-11-10T18:53:26Z",
    "title_canon_sha256": "cb282ef47dd84f8cccaa80d95e0aff105713883a65ac4a8bcc69542248bb3d7a"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/0611349",
    "kind": "arxiv",
    "version": 1
  }
}