Pith Number

pith:SQWN7B26

pith:2008:SQWN7B26VE2M5DQK3KXLJ4IYCA

not attested not anchored not stored refs pending

Studying the Sources of Cosmic Reionization with 21-cm Fluctuations

2, (2) Caltech, 3) ((1) University of Tokyo, (3) Tel Aviv University), Rennan Barkana (1

arxiv:0806.2333 v2 · 2008-06-13 · astro-ph

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{SQWN7B26VE2M5DQK3KXLJ4IYCA}

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	2026-05-18T02:15:51.540520Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

942cdf875ea934ce8e0adaaeb4f118101c94925624551b57a14750b5b65eca21

Aliases

arxiv: 0806.2333 · arxiv_version: 0806.2333v2 · doi: 10.48550/arxiv.0806.2333 · pith_short_12: SQWN7B26VE2M · pith_short_16: SQWN7B26VE2M5DQK · pith_short_8: SQWN7B26

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/SQWN7B26VE2M5DQK3KXLJ4IYCA \
  | 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: 942cdf875ea934ce8e0adaaeb4f118101c94925624551b57a14750b5b65eca21

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "5357849a36e9c5066c47edebe09b343bc625bf27a3824eb47f195443152604b9",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph",
    "submitted_at": "2008-06-13T20:58:22Z",
    "title_canon_sha256": "8089604e145e5e7d7456b9286100e8c0bf1e98532aea2efbac797ea6f16d4d37"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0806.2333",
    "kind": "arxiv",
    "version": 2
  }
}