Pith Number

pith:G3V3F4HF

pith:2009:G3V3F4HF5PXUDCPRHYRHUOG632

not attested not anchored not stored refs pending

The distance to the C component of I Zw 18 and its star formation history: A probabilistic approach

Enrique Perez (IAA-CSIC), IAC), IA-UNAM), Luc Jamet (IAA-CSIC, Miguel Cervino (IAA-CSIC), T. Yakobchuk (Main Astronomical Obsevatory Ukrania), Valentina Luridiana (IAA-CSIC

arxiv:0911.1225 v1 · 2009-11-06 · 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{G3V3F4HF5PXUDCPRHYRHUOG632}

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	2026-05-18T03:19:35.688159Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

36ebb2f0e5ebef4189f13e227a38dede9e7aeb3eb2754c53cbeea687b4279431

Aliases

arxiv: 0911.1225 · arxiv_version: 0911.1225v1 · doi: 10.48550/arxiv.0911.1225 · pith_short_12: G3V3F4HF5PXU · pith_short_16: G3V3F4HF5PXUDCPR · pith_short_8: G3V3F4HF

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/G3V3F4HF5PXUDCPRHYRHUOG632 \
  | 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: 36ebb2f0e5ebef4189f13e227a38dede9e7aeb3eb2754c53cbeea687b4279431

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "d631de006c46408872dc40abd7d72d8dd3c7a7f8fa22438199c9af86922f23be",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2009-11-06T11:05:17Z",
    "title_canon_sha256": "a6770509996a538868c37afa1b2e668bc7a26960b619f6622cb9078fa6a7b8d4"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0911.1225",
    "kind": "arxiv",
    "version": 1
  }
}