Pith Number

pith:424UXSJE

pith:2010:424UXSJEYKW6UXAPEAG6PK56VP

not attested not anchored not stored refs pending

Chandra Detects the Rare Oxygen-type Wolf-Rayet Star WR 142 and OB Stars in Berkeley 87

Kimberly R. Sokal, Manuel G\"udel, Stephen L. Skinner, Svetozar A. Zhekov, Werner Schmutz

arxiv:1004.0462 v1 · 2010-04-03 · 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{424UXSJEYKW6UXAPEAG6PK56VP}

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.

Cited by

1 paper in Pith

Diffuse gamma-ray emission in the vicinity of open cluster Berkeley 87

Receipt and verification

First computed	2026-05-18T02:08:14.592401Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

e6b94bc924c2adea5c0f200de7abbeabe8877d4a1e937c9811ad3aabbdcd99f2

Aliases

arxiv: 1004.0462 · arxiv_version: 1004.0462v1 · doi: 10.48550/arxiv.1004.0462 · pith_short_12: 424UXSJEYKW6 · pith_short_16: 424UXSJEYKW6UXAP · pith_short_8: 424UXSJE

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/424UXSJEYKW6UXAPEAG6PK56VP \
  | 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: e6b94bc924c2adea5c0f200de7abbeabe8877d4a1e937c9811ad3aabbdcd99f2

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "521eed631e1535125015472befba7a2cabc7772501faccb3649be062c841b2ee",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.SR",
    "submitted_at": "2010-04-03T19:54:57Z",
    "title_canon_sha256": "49b4805b280e7497eededaff0c089231759e93a0c69bcd50c036151490276ba2"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1004.0462",
    "kind": "arxiv",
    "version": 1
  }
}