Pith Number

pith:ZB4BE2R5

pith:2009:ZB4BE2R5MCTURNB4QOGWMYPZS3

not attested not anchored not stored refs pending

21 cm Intensity Mapping

Ahmed Legrouri, Alberto Vallinotto, Albert Stebbins, Avi Loeb, Bruce McWilliams, Chris Stoughton, Christophe Magneville, Christophe Yeche, Craig Hogan, David P. McGinnis, Dick Bond, Fritz DeJongh, Hassane Darhmaoui, Hee-Jong Seo, Jason H. Steffen, Jean-Marc Le Goff, Jeffrey B. Peterson, Jim Rich, John Bunton, John Marriner, Kermit Carlson, Kevin Bandura, Khalid Loudiyi, Kris Sigurdson, Marc Moniez, Mark Halpern, Matt Dobbs, Nathalie Palanque-Delabruille, Nick Gnedin, Peter T. Timbie, Ralph J. Pasquinelli, Reza Ansari, Roy Aleksan, Scott Dodelson, Stuart Wyithe, Tiehui Ted Liu, Tzu-Ching Chang, Ue-Li Pen, Uros Seljak, Vic Scarpine

arxiv:0902.3091 v1 · 2009-02-18 · astro-ph.IM · 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{ZB4BE2R5MCTURNB4QOGWMYPZS3}

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	2026-07-04T15:38:12.375011Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

c878126a3d60a748b43c838d6661f996e72e8b6df52538f8deb3a17796d348c4

Aliases

arxiv: 0902.3091 · arxiv_version: 0902.3091v1 · doi: 10.48550/arxiv.0902.3091 · pith_short_12: ZB4BE2R5MCTU · pith_short_16: ZB4BE2R5MCTURNB4 · pith_short_8: ZB4BE2R5

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/ZB4BE2R5MCTURNB4QOGWMYPZS3 \
  | 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: c878126a3d60a748b43c838d6661f996e72e8b6df52538f8deb3a17796d348c4

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "0da923d78beae2b4e108f0ae16d0ed53161576cc9d30ce7dd434ecef80376d2a",
    "cross_cats_sorted": [
      "astro-ph.CO"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.IM",
    "submitted_at": "2009-02-18T10:33:08Z",
    "title_canon_sha256": "a22f0285950e226f69c72d99b10b7b7474c733ae79193c772c14071777bf61bd"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0902.3091",
    "kind": "arxiv",
    "version": 1
  }
}