Pith Number

pith:P2EE4BUF

pith:2009:P2EE4BUFAYHTNNCISFG5HX7WGZ

not attested not anchored not stored refs pending

Radio emission from the massive stars in the Galactic Super Star Cluster Westerlund 1

I. Negueruela, J.M. Chapman, J.S. Clark, S.M. Dougherty, T. Johnson

arxiv:0912.4165 v1 · 2009-12-21 · 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{P2EE4BUFAYHTNNCISFG5HX7WGZ}

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	2026-05-18T02:10:14.988350Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

7e884e0685060f36b448914dd3dff63643103f6901c950b927c3e0019c15a1c4

Aliases

arxiv: 0912.4165 · arxiv_version: 0912.4165v1 · doi: 10.48550/arxiv.0912.4165 · pith_short_12: P2EE4BUFAYHT · pith_short_16: P2EE4BUFAYHTNNCI · pith_short_8: P2EE4BUF

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/P2EE4BUFAYHTNNCISFG5HX7WGZ \
  | 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: 7e884e0685060f36b448914dd3dff63643103f6901c950b927c3e0019c15a1c4

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "56ab2f743b38b03a893e29f63a62516905d9fcaa02b1b3c38d53cad02446a2ae",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.SR",
    "submitted_at": "2009-12-21T13:37:51Z",
    "title_canon_sha256": "a5bb26e8b4e4e47dab50f9438838f02c2efbd3893f69085b33836dc0087b50bc"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0912.4165",
    "kind": "arxiv",
    "version": 1
  }
}