Pith Number

pith:IARQNR7H

pith:2010:IARQNR7HZJMAMBRCQ66GRHN4SX

not attested not anchored not stored refs pending

The Massive Star Forming Region Cygnus OB2. II. Integrated Stellar Properties and the Star Formation History

Janet E. Drew (University of Hertfordshire), Jeremy J. Drake (CfA), Jorick S. Vink (Armagh Observatory), Nicholas J. Wright (CfA)

arxiv:1003.2463 v1 · 2010-03-12 · astro-ph.SR · astro-ph.GA

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{IARQNR7HZJMAMBRCQ66GRHN4SX}

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	2026-05-18T02:08:34.716509Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

402306c7e7ca5806062287bc689dbc95ef8c9ad8d95ee82fbe72f510bf6cf2c9

Aliases

arxiv: 1003.2463 · arxiv_version: 1003.2463v1 · doi: 10.48550/arxiv.1003.2463 · pith_short_12: IARQNR7HZJMA · pith_short_16: IARQNR7HZJMAMBRC · pith_short_8: IARQNR7H

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/IARQNR7HZJMAMBRCQ66GRHN4SX \
  | 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: 402306c7e7ca5806062287bc689dbc95ef8c9ad8d95ee82fbe72f510bf6cf2c9

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "d5f03c1398d8aa557da74925d2a90e616713ef6849290ed37997f49a8142d3db",
    "cross_cats_sorted": [
      "astro-ph.GA"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.SR",
    "submitted_at": "2010-03-12T02:19:02Z",
    "title_canon_sha256": "408fd8bcee8793503266f9403a92c3be972c7fe4e629c322731cab11748c7bf0"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1003.2463",
    "kind": "arxiv",
    "version": 1
  }
}