Pith Number

pith:F74MLC2G

pith:2010:F74MLC2GY5C3LZ44UI2Q2M5FW4

not attested not anchored not stored refs pending

The massive binary population of the starburst cluster Westerlund 1

B.W. Ritchie, I. Negueruela, J.S. Clark

arxiv:1010.6270 v1 · 2010-10-29 · 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{F74MLC2GY5C3LZ44UI2Q2M5FW4}

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	2026-05-18T04:38:07.185536Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

2ff8c58b46c745b5e79ca2350d33a5b704f6155a86c890f647aa264dfe9830c9

Aliases

arxiv: 1010.6270 · arxiv_version: 1010.6270v1 · doi: 10.48550/arxiv.1010.6270 · pith_short_12: F74MLC2GY5C3 · pith_short_16: F74MLC2GY5C3LZ44 · pith_short_8: F74MLC2G

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/F74MLC2GY5C3LZ44UI2Q2M5FW4 \
  | 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: 2ff8c58b46c745b5e79ca2350d33a5b704f6155a86c890f647aa264dfe9830c9

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "404c4cff363290ac4ab30177aad3296f0bf474f4bf71c2ac478ccaf15d7b41b3",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.SR",
    "submitted_at": "2010-10-29T16:48:57Z",
    "title_canon_sha256": "b01e9c73aee3b239419149002e3887d316c800747e9fbdc2b483d8e49f1b3f2e"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1010.6270",
    "kind": "arxiv",
    "version": 1
  }
}