Pith Number

pith:VLEL7FNY

pith:2010:VLEL7FNYKWTL7E2ZWPRLV27L4K

not attested not anchored not stored refs pending

Massive star formation in Wolf-Rayet galaxies. IV: Colours, chemical composition analysis and metallicity-luminosity relations

Angel R. Lopez-Sanchez, Cesar Esteban

arxiv:1004.0626 v2 · 2010-04-05 · astro-ph.CO

Open paper page JSON Open Graph Bundle Merged state Verified badge What is a Pith Number?

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{VLEL7FNYKWTL7E2ZWPRLV27L4K}

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	2026-05-18T02:08:14.431547Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

aac8bf95b855a6bf9359b3e2baebebe2b194a6903d8dfd8b04cf43116f49c71c

Aliases

arxiv: 1004.0626 · arxiv_version: 1004.0626v2 · doi: 10.48550/arxiv.1004.0626 · pith_short_12: VLEL7FNYKWTL · pith_short_16: VLEL7FNYKWTL7E2Z · pith_short_8: VLEL7FNY

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/VLEL7FNYKWTL7E2ZWPRLV27L4K \
  | 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: aac8bf95b855a6bf9359b3e2baebebe2b194a6903d8dfd8b04cf43116f49c71c

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "f3e438188d3aac0ab5562023ffbbf262438ea06d00b17ab88f9cd40affd8af9e",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2010-04-05T13:20:57Z",
    "title_canon_sha256": "645b745d00fc3cd1132b50da1db951ab4514d8411709ea93e1d2fd34dc7a9e6f"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1004.0626",
    "kind": "arxiv",
    "version": 2
  }
}