Pith Number

pith:PZOYYYEN

pith:2015:PZOYYYENDU4DLNWQD3JMUJPTZN

not attested not anchored not stored refs pending

On the origin of excess cool gas in quasar host halos

Hsiao-Wen Chen, John S. Mulchaey, Sean D. Johnson

arxiv:1505.07838 v2 · 2015-05-28 · 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{PZOYYYENDU4DLNWQD3JMUJPTZN}

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	2026-05-18T01:35:47.502595Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

7e5d8c608d1d3835b6d01ed2ca25f3cb5376a0be90c737aa2fd3e1895dcd5c7f

Aliases

arxiv: 1505.07838 · arxiv_version: 1505.07838v2 · doi: 10.48550/arxiv.1505.07838 · pith_short_12: PZOYYYENDU4D · pith_short_16: PZOYYYENDU4DLNWQ · pith_short_8: PZOYYYEN

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/PZOYYYENDU4DLNWQD3JMUJPTZN \
  | 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: 7e5d8c608d1d3835b6d01ed2ca25f3cb5376a0be90c737aa2fd3e1895dcd5c7f

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "bd92359b14cee716c4431064268d8fbef4c9c124fecceab97e681b236df3bb89",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2015-05-28T20:01:15Z",
    "title_canon_sha256": "3e22c5dddc115912e4ba5944564a23bf9e970932046a240595c1f62f3997e045"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1505.07838",
    "kind": "arxiv",
    "version": 2
  }
}