Pith Number

pith:VVIZLRW6

pith:2010:VVIZLRW65T66LUWQI4EYYDPNGD

not attested not anchored not stored refs pending

The XMM-Newton X-ray Spectra of the Most X-ray Luminous Radio-quiet ROSAT Bright Survey-QSOs: A Reference Sample for the Interpretation of High-redshift QSO Spectra

Alex Markowitz, Amalia Corral, Georg Lamer, Mirko Krumpe

arxiv:1011.4139 v1 · 2010-11-18 · astro-ph.CO · astro-ph.HE

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{VVIZLRW65T66LUWQI4EYYDPNGD}

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	2026-05-18T04:35:46.551063Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

ad5195c6deecfde5d2d047098c0ded30dda7347a806825d18fbe3407b31e318e

Aliases

arxiv: 1011.4139 · arxiv_version: 1011.4139v1 · doi: 10.48550/arxiv.1011.4139 · pith_short_12: VVIZLRW65T66 · pith_short_16: VVIZLRW65T66LUWQ · pith_short_8: VVIZLRW6

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/VVIZLRW65T66LUWQI4EYYDPNGD \
  | 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: ad5195c6deecfde5d2d047098c0ded30dda7347a806825d18fbe3407b31e318e

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "6124031678b22d554db352cacdeba545b624999599f3c4a778fa7bc4f1d9bf2c",
    "cross_cats_sorted": [
      "astro-ph.HE"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2010-11-18T06:20:28Z",
    "title_canon_sha256": "f5525877ea3572c93f961c8aec4fbc89ec5c96d7238885aed957513eeaba28d2"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1011.4139",
    "kind": "arxiv",
    "version": 1
  }
}