Pith Number

pith:LBAUMRSP

pith:2010:LBAUMRSPSPKWPAVGQBY7J2Q5DW

not attested not anchored not stored refs pending

Searching for the earliest galaxies in the 21 cm forest

Andrea Ferrara, Francisco S. Kitaura, Xuelei Chen, Yidong Xu

arxiv:1002.4356 v1 · 2010-02-23 · 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{LBAUMRSPSPKWPAVGQBY7J2Q5DW}

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	2026-05-18T04:27:47.734878Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

584146464f93d56782a68071f4ea1d1d957c52a13c01a0e360af7af63bf81487

Aliases

arxiv: 1002.4356 · arxiv_version: 1002.4356v1 · doi: 10.48550/arxiv.1002.4356 · pith_short_12: LBAUMRSPSPKW · pith_short_16: LBAUMRSPSPKWPAVG · pith_short_8: LBAUMRSP

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/LBAUMRSPSPKWPAVGQBY7J2Q5DW \
  | 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: 584146464f93d56782a68071f4ea1d1d957c52a13c01a0e360af7af63bf81487

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "6819f3463b1a4e72978515b46d905dbd73ee5404a0c8bdd03151c094fc472cf6",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2010-02-23T15:52:20Z",
    "title_canon_sha256": "932733b07c3a445b2b3219f2cefb1b4897b0700f6338a750b5b3105b1b5a5b50"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1002.4356",
    "kind": "arxiv",
    "version": 1
  }
}