Pith Number

pith:WPBE2QTE

pith:2019:WPBE2QTEVCSIEWEGUEVQONW7NB

not attested not anchored not stored refs pending

The most luminous blue quasars at $3.0<z<3.3$. I. A tale of two X-ray populations

A. Marconi, C. Vignali, E. Lusso, E. Nardini, F. Civano, F. Salvestrini, G. Fabbiano, G. Risaliti, M. Elvis, R. Gilli, S. Bisogni

arxiv:1910.04604 v2 · 2019-10-10 · astro-ph.GA

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{WPBE2QTEVCSIEWEGUEVQONW7NB}

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

Deep Learning Calibration of the Quasar X-ray/UV Luminosity Relation for Cosmological Applications

Receipt and verification

First computed	2026-07-05T00:25:17.764043Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

b3c24d4264a8a4825886a12b0736df685c2f8f321df7d88688bf57f572dadd0e

Aliases

arxiv: 1910.04604 · arxiv_version: 1910.04604v2 · doi: 10.48550/arxiv.1910.04604 · pith_short_12: WPBE2QTEVCSI · pith_short_16: WPBE2QTEVCSIEWEG · pith_short_8: WPBE2QTE

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/WPBE2QTEVCSIEWEGUEVQONW7NB \
  | 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: b3c24d4264a8a4825886a12b0736df685c2f8f321df7d88688bf57f572dadd0e

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "32b3b1706452104c245c7836635e1b83d7c3360ceb51076f1ea86c5204a08b34",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2019-10-10T14:31:54Z",
    "title_canon_sha256": "5a83f73b660fdc207771fe70006d8dd614b65d8f6e60c18d4eff1400ad4c8ddb"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1910.04604",
    "kind": "arxiv",
    "version": 2
  }
}