Pith Number

pith:WVOOQ2AQ

pith:2009:WVOOQ2AQNOANUZSFETU46HTKYL

not attested not anchored not stored refs pending

The onset of star formation in primordial haloes

Benedetta Ciardi, Klaus Dolag, Luca Tornatore, Naoki Yoshida, Umberto Maio

arxiv:0906.0458 v2 · 2009-06-02 · astro-ph.CO · astro-ph.GA

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{WVOOQ2AQNOANUZSFETU46HTKYL}

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	2026-05-18T02:13:29.795682Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

b55ce868106b80da664524e9cf1e6ac2d035aa7fb4c6b94d86b516f43f8d4f14

Aliases

arxiv: 0906.0458 · arxiv_version: 0906.0458v2 · doi: 10.48550/arxiv.0906.0458 · pith_short_12: WVOOQ2AQNOAN · pith_short_16: WVOOQ2AQNOANUZSF · pith_short_8: WVOOQ2AQ

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/WVOOQ2AQNOANUZSFETU46HTKYL \
  | 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: b55ce868106b80da664524e9cf1e6ac2d035aa7fb4c6b94d86b516f43f8d4f14

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "530dc86f79d7cffe046a67353e9ed456b379e0be8d6a814fb64f8a016000fa61",
    "cross_cats_sorted": [
      "astro-ph.GA"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2009-06-02T11:10:31Z",
    "title_canon_sha256": "52474055afdc8662e14458499d4fec909192e1a855bb88e78aed6b3b997c347b"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0906.0458",
    "kind": "arxiv",
    "version": 2
  }
}