Pith Number

pith:QUHRA7HE

pith:2010:QUHRA7HEEF2Q25PICBHLVNA7HR

not attested not anchored not stored refs pending

The Simultaneous Optical-to-X-ray Spectral Energy Distribution of Soft X-ray Selected AGN observed by Swift

Dirk Grupe (PSU), Karen M. Leighly (University of Oklahoma), Kim L. Page (University of Leicester), S. Komossa (MPE)

arxiv:1001.3140 v2 · 2010-01-19 · 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{QUHRA7HEEF2Q25PICBHLVNA7HR}

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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	2026-05-18T02:09:42.794507Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

850f107ce421750d75e8104ebab41f3c545788b6a05987d25de6c3029ccd23e3

Aliases

arxiv: 1001.3140 · arxiv_version: 1001.3140v2 · doi: 10.48550/arxiv.1001.3140 · pith_short_12: QUHRA7HEEF2Q · pith_short_16: QUHRA7HEEF2Q25PI · pith_short_8: QUHRA7HE

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/QUHRA7HEEF2Q25PICBHLVNA7HR \
  | 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: 850f107ce421750d75e8104ebab41f3c545788b6a05987d25de6c3029ccd23e3

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "5904fb665ad7789cad67613a47a744c82d82e39311c98421f85ecf6a5d3b299a",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2010-01-19T14:55:56Z",
    "title_canon_sha256": "4a4e8e6bcee0d4dd4d460fc8cb85727a80e5462fdf27af8173c414ddaef29ffa"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1001.3140",
    "kind": "arxiv",
    "version": 2
  }
}