Pith Number

pith:5QVE2VXE

pith:2019:5QVE2VXEEBUSY6QZCJNBNWVRZM

not attested not anchored not stored refs pending

Quasars: from the Physics of Line Formation to Cosmology

A. Del Olmo, C. A. Negrete, D. Dultzin, E. Bon, G. M. Stirpe, M. D'Onofrio, M. L. Mart\'inez-Aldama, N. Bon, P. Marziani

arxiv:1901.10032 v1 · 2019-01-28 · astro-ph.GA · 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{5QVE2VXEEBUSY6QZCJNBNWVRZM}

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	2026-05-17T23:55:16.332671Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

ec2a4d56e420692c7a19125a16dab1cb07a0aeb4984283cc72130cc9d8ff166a

Aliases

arxiv: 1901.10032 · arxiv_version: 1901.10032v1 · doi: 10.48550/arxiv.1901.10032 · pith_short_12: 5QVE2VXEEBUS · pith_short_16: 5QVE2VXEEBUSY6QZ · pith_short_8: 5QVE2VXE

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/5QVE2VXEEBUSY6QZCJNBNWVRZM \
  | 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: ec2a4d56e420692c7a19125a16dab1cb07a0aeb4984283cc72130cc9d8ff166a

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "2f7578497eb6d766b9a7dc85493c0fe041494f943882aac69fbed2f5be95e1fc",
    "cross_cats_sorted": [
      "astro-ph.CO"
    ],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2019-01-28T23:16:57Z",
    "title_canon_sha256": "009baf3512286a6ffb0e20db3b0d22fd04a616a2bf7698657be1a798b17dddd9"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1901.10032",
    "kind": "arxiv",
    "version": 1
  }
}