Pith Number

pith:23PDOCSY

pith:2019:23PDOCSYE4DUG6PV2QL5R7FR2Q

not attested not anchored not stored refs pending

Can reverberation-measured quasars be used for cosmology?

Bo\.zena Czerny, Damian Kawka, Mary Loli Mart\'inez-Aldama, Michal Zaja\v{c}ek, Piotr T. \.Zycki, Swayamtrupta Panda, Vladimir Karas

arxiv:1903.09687 v3 · 2019-03-22 · 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{23PDOCSYE4DUG6PV2QL5R7FR2Q}

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

Main trends of the quasar main sequence -- effect of viewing angle

Receipt and verification

First computed	2026-07-05T00:10:34.644383Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

d6de370a5827074379f5d417d8fcb1d404d950c7674df699d1eac35d5d61b274

Aliases

arxiv: 1903.09687 · arxiv_version: 1903.09687v3 · doi: 10.48550/arxiv.1903.09687 · pith_short_12: 23PDOCSYE4DU · pith_short_16: 23PDOCSYE4DUG6PV · pith_short_8: 23PDOCSY

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/23PDOCSYE4DUG6PV2QL5R7FR2Q \
  | 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: d6de370a5827074379f5d417d8fcb1d404d950c7674df699d1eac35d5d61b274

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "05503a6ac491365c8d8c5483c0c7bda03cf3a2e1186e14c3885fab22f44a379a",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2019-03-22T19:52:03Z",
    "title_canon_sha256": "080ac1b609ed7c100e5c85770c9bb9d87bbc92e8d345a4384d96e16f1b102493"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1903.09687",
    "kind": "arxiv",
    "version": 3
  }
}