Pith Number

pith:L3K4EYVN

pith:2001:L3K4EYVNOA3Z3A6DRGXVQIE2HE

not attested not anchored not stored refs pending

The Rest-Frame Extreme Ultraviolet Spectral Properties of QSOs

A. F. Davidsen, G. A. Kriss, R. C. Telfer, W. Zheng

arxiv:astro-ph/0109531 v1 · 2001-09-27 · 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{L3K4EYVNOA3Z3A6DRGXVQIE2HE}

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

Particle Acceleration, Coronal Neutrino Production, and the Diffuse Extragalactic Neutrino Background from Supermassive Black Holes

Receipt and verification

First computed	2026-05-18T01:07:45.497669Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

5ed5c262ad70379d83c389af58209a39064658363fe139aaf2651371d937b54f

Aliases

arxiv: astro-ph/0109531 · arxiv_version: astro-ph/0109531v1 · doi: 10.48550/arxiv.astro-ph/0109531 · pith_short_12: L3K4EYVNOA3Z · pith_short_16: L3K4EYVNOA3Z3A6D · pith_short_8: L3K4EYVN

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/L3K4EYVNOA3Z3A6DRGXVQIE2HE \
  | 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: 5ed5c262ad70379d83c389af58209a39064658363fe139aaf2651371d937b54f

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "0c5aa8a0374daeb8f11361451bb1d68670c1987441f360fb8b6de6bb4152ed89",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "2001-09-27T22:05:13Z",
    "title_canon_sha256": "7e6bd6ac65cc5c83822c456ce7f2eacecd3a8e6dfc89702717e43e40ddf77a7f"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/0109531",
    "kind": "arxiv",
    "version": 1
  }
}