Pith Number

pith:XEJCC552

pith:2009:XEJCC552LXQZJAN2APUHIZ7RUC

not attested not anchored not stored refs pending

Mid-IR observations of circumstellar disks -- Part III: A mixed sample of PMS stars and Vega-type objects

4, 5) ((1) European Southern Observatory, Canada), Chile; (2) Astrophysikalisches Institut Potsdam, E. Peeters (3, Germany; (3) NASA Ames Research Center, G. Meeus (2), M. F. Sterzik (1), O. Schuetz (1), USA; (4) SETI Institute, USA; (5) The University of Western Ontario

arxiv:0904.4278 v1 · 2009-04-27 · 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{XEJCC552LXQZJAN2APUHIZ7RUC}

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	2026-05-18T02:13:56.859529Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

b9122177ba5de19481ba03e87467f1a0b36aa15138d2459498f157a4437e7167

Aliases

arxiv: 0904.4278 · arxiv_version: 0904.4278v1 · doi: 10.48550/arxiv.0904.4278 · pith_short_12: XEJCC552LXQZ · pith_short_16: XEJCC552LXQZJAN2 · pith_short_8: XEJCC552

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/XEJCC552LXQZJAN2APUHIZ7RUC \
  | 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: b9122177ba5de19481ba03e87467f1a0b36aa15138d2459498f157a4437e7167

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "e97172f206df049d48d2d1d80eb426f10d67446b1ba84e99b67de753529cbe83",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.SR",
    "submitted_at": "2009-04-27T23:49:15Z",
    "title_canon_sha256": "bdd3e9ca2345d1e96606ccda2ad80795d6128b95e638071c6e5798f3ab568e8e"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0904.4278",
    "kind": "arxiv",
    "version": 1
  }
}