Pith Number

pith:QSO557LG

pith:2009:QSO557LGP5HEB62Q4NEQDXRR4Q

not attested not anchored not stored refs pending

The Evolution of Massive YSOs in the LMC: Part I. Identification and Spectral Classification

Bernhard Brandl, C.-H. Rosie Chen, Geoffrey A. Blake, Jonathan P. Seale, Leslie W. Looney, Robert A. Gruendl, Wolfgang Brandner, You-Hua Chu

arxiv:0904.1825 v3 · 2009-04-11 · 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{QSO557LGP5HEB62Q4NEQDXRR4Q}

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

Dust-Embedded Star Formation: Bridging Magellanic Cloud Studies of Massive Young Stellar Objects to Nearby Spiral Galaxies

Receipt and verification

First computed	2026-07-04T15:45:06.447430Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

849ddefd667f4e40fb50e34901de31e4356596d78c8a186edb9d16d3fc584c2a

Aliases

arxiv: 0904.1825 · arxiv_version: 0904.1825v3 · doi: 10.48550/arxiv.0904.1825 · pith_short_12: QSO557LGP5HE · pith_short_16: QSO557LGP5HEB62Q · pith_short_8: QSO557LG

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/QSO557LGP5HEB62Q4NEQDXRR4Q \
  | 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: 849ddefd667f4e40fb50e34901de31e4356596d78c8a186edb9d16d3fc584c2a

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "138c9e3fdd37498e47f257e7ce2c72e5d6bc7f53082a787427806c7d7513f0f6",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.SR",
    "submitted_at": "2009-04-11T21:20:12Z",
    "title_canon_sha256": "a597f886b47c49658deb3fa83ca7aefb7b1b0a156a6f5caf877962a066c70e51"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0904.1825",
    "kind": "arxiv",
    "version": 3
  }
}