Pith Number

pith:K4P7NKDB

pith:2011:K4P7NKDBDFHTNHZY3TA6OPIDDB

not attested not anchored not stored refs pending

Redshift Space Distortion of the 21cm Background from the Epoch of Reionization I: Methodology Re-examined

((1) U Texas at Austin, (2) Stockholm U, (3) U Sussex, (4) Chosun U), Garrelt Mellema (2), Ilian T. Iliev (3), Jun Koda (1), Kyungjin Ahn (4), Paul R. Shapiro (1), Yi Mao (1)

arxiv:1104.2094 v4 · 2011-04-12 · astro-ph.CO · astro-ph.GA · astro-ph.IM

Open paper page JSON Open Graph Bundle Merged state What is a Pith Number?

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{K4P7NKDBDFHTNHZY3TA6OPIDDB}

Prints a linked badge after your title and injects PDF metadata. Compiles on arXiv. Learn more

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	2026-05-18T02:02:35.082222Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

571ff6a861194f369f38dcc1e73d031847358a45acfe1ba9559efa18acf25ca1

Aliases

arxiv: 1104.2094 · arxiv_version: 1104.2094v4 · doi: 10.48550/arxiv.1104.2094 · pith_short_12: K4P7NKDBDFHT · pith_short_16: K4P7NKDBDFHTNHZY · pith_short_8: K4P7NKDB

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/K4P7NKDBDFHTNHZY3TA6OPIDDB \
  | 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: 571ff6a861194f369f38dcc1e73d031847358a45acfe1ba9559efa18acf25ca1

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "1c47a21f6da60f0cc53c342f7298e07b3d68b0e2c3482b39b432bf54c41a1f7f",
    "cross_cats_sorted": [
      "astro-ph.GA",
      "astro-ph.IM"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2011-04-12T00:27:24Z",
    "title_canon_sha256": "fc93370d8c922bf611ffa34979cec737f897251423ebc45cdf677745a4aaebb3"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1104.2094",
    "kind": "arxiv",
    "version": 4
  }
}