Pith Number

pith:6LVA3PM3

pith:2015:6LVA3PM3SLXJDSEAVOBNYKCN6Z

not attested not anchored not stored refs pending

A High-Resolution Multiband Survey of Westerlund 2 With the Hubble Space Telescope I: Is the Massive Star Cluster Double?

Alceste Z. Bonanos, Anna Pasquali, Antonella Nota, Carol Christian, Elena Sabbi, Eva K. Grebel, Leonardo Ubeda, Monica Tosi, Peter Zeidler, Selma E. de Mink

arxiv:1506.08887 v1 · 2015-06-29 · 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{6LVA3PM3SLXJDSEAVOBNYKCN6Z}

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	2026-05-18T01:30:58.253201Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

f2ea0dbd9b92ee91c880ab82dc284df66ea0ab9cbc41dbfc80f725e03e2837c8

Aliases

arxiv: 1506.08887 · arxiv_version: 1506.08887v1 · doi: 10.48550/arxiv.1506.08887 · pith_short_12: 6LVA3PM3SLXJ · pith_short_16: 6LVA3PM3SLXJDSEA · pith_short_8: 6LVA3PM3

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/6LVA3PM3SLXJDSEAVOBNYKCN6Z \
  | 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: f2ea0dbd9b92ee91c880ab82dc284df66ea0ab9cbc41dbfc80f725e03e2837c8

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "c053f67fcd7f75c124320a48d26a681756e7d2f9989b588fd3444145d9713d01",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.SR",
    "submitted_at": "2015-06-29T22:24:08Z",
    "title_canon_sha256": "db22b914399e0f04cb873160b4e0a4e4fdb403a4eae767af9a8efcaca0816dcf"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1506.08887",
    "kind": "arxiv",
    "version": 1
  }
}