Pith Number

pith:7URYJ56S

pith:2009:7URYJ56SX7Z2HDQQAFRGNAP6T2

not attested not anchored not stored refs pending

The initial mass function of the rich young cluster NGC 1818 in the Large Magellanic Cloud

I. Baraffe, L. C. Deng, Q. Liu, R. de Grijs, S. F. Beaulieu, Y. Hu

arxiv:0903.4787 v2 · 2009-03-27 · astro-ph.SR

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{7URYJ56SX7Z2HDQQAFRGNAP6T2}

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	2026-05-18T02:14:19.088580Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

fd2384f7d2bff3a38e1001626681fe9e83996e35caf85b4e9eaf1149d1940ab0

Aliases

arxiv: 0903.4787 · arxiv_version: 0903.4787v2 · doi: 10.48550/arxiv.0903.4787 · pith_short_12: 7URYJ56SX7Z2 · pith_short_16: 7URYJ56SX7Z2HDQQ · pith_short_8: 7URYJ56S

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/7URYJ56SX7Z2HDQQAFRGNAP6T2 \
  | 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: fd2384f7d2bff3a38e1001626681fe9e83996e35caf85b4e9eaf1149d1940ab0

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "ef4a796e46c5781a64bef47b8a2735773976d9c7744870cca1581d55815a3ae7",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.SR",
    "submitted_at": "2009-03-27T14:34:02Z",
    "title_canon_sha256": "6c501d90daa7f56e16142cac7fe510c68cbf57f1b2a8b599072c1bf4e9029221"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0903.4787",
    "kind": "arxiv",
    "version": 2
  }
}