Pith Number

pith:HMG3ND7N

pith:2009:HMG3ND7NYERMBTA7EBUMH7PRXV

not attested not anchored not stored refs pending

A VLT/FLAMES survey for massive binaries in Westerlund 1: I. first observations of luminous evolved stars

B. W. Ritchie, I. Negueruela, J. S. Clark, P. A. Crowther

arxiv:0909.3815 v2 · 2009-09-21 · 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{HMG3ND7NYERMBTA7EBUMH7PRXV}

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	2026-05-18T02:11:45.693197Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

3b0db68fedc122c0cc1f2068c3fdf1bd776eaeaeba1e8fdc1f065c3eb331f34d

Aliases

arxiv: 0909.3815 · arxiv_version: 0909.3815v2 · doi: 10.48550/arxiv.0909.3815 · pith_short_12: HMG3ND7NYERM · pith_short_16: HMG3ND7NYERMBTA7 · pith_short_8: HMG3ND7N

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/HMG3ND7NYERMBTA7EBUMH7PRXV \
  | 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: 3b0db68fedc122c0cc1f2068c3fdf1bd776eaeaeba1e8fdc1f065c3eb331f34d

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "d5a8068df7ec2357a39e0ed963c19640021d0a3aacb06baf429aea1a841edca6",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.SR",
    "submitted_at": "2009-09-21T17:59:12Z",
    "title_canon_sha256": "f423794b48b6513fa040a8093b18044051ebba5ad51f7b54e4e69bba1434328d"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0909.3815",
    "kind": "arxiv",
    "version": 2
  }
}