Pith Number

pith:5UFXC4O5

pith:2010:5UFXC4O5STZ7IDT77SOFPGLGXX

not attested not anchored not stored refs pending

The population of OB supergiants in the starburst cluster Westerlund 1

Ben W. Ritchie (OU), Ignacio Negueruela (Alicante), J. Simon Clark (OU)

arxiv:1003.5204 v1 · 2010-03-26 · astro-ph.GA · 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{5UFXC4O5STZ7IDT77SOFPGLGXX}

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	2026-05-18T02:08:16.631038Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

ed0b7171dd94f3f40e7ffc9c579966bdf0f0f709333bd5a804cfa56cabc9a6d2

Aliases

arxiv: 1003.5204 · arxiv_version: 1003.5204v1 · doi: 10.48550/arxiv.1003.5204 · pith_short_12: 5UFXC4O5STZ7 · pith_short_16: 5UFXC4O5STZ7IDT7 · pith_short_8: 5UFXC4O5

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/5UFXC4O5STZ7IDT77SOFPGLGXX \
  | 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: ed0b7171dd94f3f40e7ffc9c579966bdf0f0f709333bd5a804cfa56cabc9a6d2

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "f36981b39bf775cb58374f6ef3dfad30a6af89bfb48c7e1d1287e5feb6c8192b",
    "cross_cats_sorted": [
      "astro-ph.SR"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2010-03-26T19:11:36Z",
    "title_canon_sha256": "59883ff0be32bf740c710bb7570de5de99b3b4f715da851e3619199a5c009fad"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1003.5204",
    "kind": "arxiv",
    "version": 1
  }
}