Pith Number

pith:KPONKCND

pith:2009:KPONKCNDZRY34UOKGLUNQAQ7E4

not attested not anchored not stored refs pending

Probing the IGM-Galaxy Connection at z < 0.5 I: A Galaxy Survey in QSO Fields and a Galaxy-Absorber Cross-Correlation Study

Hsiao-Wen Chen (UChicago/KICP), John S. Mulchaey (OCIW)

arxiv:0906.3293 v1 · 2009-06-17 · 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{KPONKCNDZRY34UOKGLUNQAQ7E4}

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	2026-05-18T04:29:42.705593Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

53dcd509a3cc71be51ca32e8d8021f273595737b0717103816d5a37b5c905abd

Aliases

arxiv: 0906.3293 · arxiv_version: 0906.3293v1 · doi: 10.48550/arxiv.0906.3293 · pith_short_12: KPONKCNDZRY3 · pith_short_16: KPONKCNDZRY34UOK · pith_short_8: KPONKCND

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/KPONKCNDZRY34UOKGLUNQAQ7E4 \
  | 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: 53dcd509a3cc71be51ca32e8d8021f273595737b0717103816d5a37b5c905abd

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "41306014bc3952c68124e6f50328c246b3c6ed88e9db3ee62ab4544caad9bce9",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2009-06-17T20:01:31Z",
    "title_canon_sha256": "d91e6668c2baba315004ad4573a98d014a32c312c4d556a6c971a85e0def4be7"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0906.3293",
    "kind": "arxiv",
    "version": 1
  }
}