Pith Number

pith:QPGYGRCS

pith:2012:QPGYGRCSLCNS5KR3ZTPY4PXMXV

not attested not anchored not stored refs pending

On the cool gaseous haloes of quasars

A. Treves, E. P. Farina, J. K. Kotilainen, R. Decarli, R. Falomo

arxiv:1211.3433 v1 · 2012-11-14 · 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{QPGYGRCSLCNS5KR3ZTPY4PXMXV}

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	2026-05-18T01:53:11.089417Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

83cd834452589b2eaa3bccdf8e3eecbd517db8a91dcdf995d7f01d17d73fdabe

Aliases

arxiv: 1211.3433 · arxiv_version: 1211.3433v1 · doi: 10.48550/arxiv.1211.3433 · pith_short_12: QPGYGRCSLCNS · pith_short_16: QPGYGRCSLCNS5KR3 · pith_short_8: QPGYGRCS

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/QPGYGRCSLCNS5KR3ZTPY4PXMXV \
  | 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: 83cd834452589b2eaa3bccdf8e3eecbd517db8a91dcdf995d7f01d17d73fdabe

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "535af90eaeb4a283ea7eec0f47386163c54c77fc2ced6fe0fb8c4d7d9182d6ff",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2012-11-14T21:16:11Z",
    "title_canon_sha256": "907a25a5d6f779714c03a10df562def6292d6778672f6d3df27b162fa07b06c0"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1211.3433",
    "kind": "arxiv",
    "version": 1
  }
}