Pith Number

pith:AJFSSDG6

pith:2021:AJFSSDG6L4NBN7K23VUPMQRUVV

not attested not anchored not stored refs pending

Quasar cosmology: dark energy evolution and spatial curvature

E. Lusso, G. Bargiacchi, G. Risaliti, M. Benetti, M. Signorini, S. Capozziello

arxiv:2111.02420 v4 · 2021-11-03 · astro-ph.CO · gr-qc · hep-th

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{AJFSSDG6L4NBN7K23VUPMQRUVV}

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

2 papers in Pith

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

Intertwined Constraints in Extended Cosmologies: Dark Energy, Curvature, Neutrinos, and Inflation

Receipt and verification

First computed	2026-07-05T04:45:47.512577Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

024b290cde5f1a16fd5add68f64234ad541c0db02a59a1228b3a9050f75c8375

Aliases

arxiv: 2111.02420 · arxiv_version: 2111.02420v4 · doi: 10.48550/arxiv.2111.02420 · pith_short_12: AJFSSDG6L4NB · pith_short_16: AJFSSDG6L4NBN7K2 · pith_short_8: AJFSSDG6

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/AJFSSDG6L4NBN7K23VUPMQRUVV \
  | 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: 024b290cde5f1a16fd5add68f64234ad541c0db02a59a1228b3a9050f75c8375

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "54772081994501d02384b10219787b5db83d6bbf8d81ee1db0638e9d0e2ccd4e",
    "cross_cats_sorted": [
      "gr-qc",
      "hep-th"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2021-11-03T18:00:02Z",
    "title_canon_sha256": "a14b724f0098b503ebc3765cb16334d84d2d85ea230f4ee14599c867ec29f053"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2111.02420",
    "kind": "arxiv",
    "version": 4
  }
}