Pith Number

pith:4H46QDJV

pith:2009:4H46QDJVDMETZ3R3R4U66UFAWA

not attested not anchored not stored refs pending

Star formation history in the SMC: the case of NGC602

2), (2) INAF, (3) Space Telescope Science Institute, 4, 4), (4) European Space Agency, (5) Dipartimento di Fisica ``Enrico Fermi'', 6), (6) INFN - Sezione di Pisa, (7) Department of Physics, (8) University of Wisconsin, 9) ((1) Dipartimento di Astronomia, (9) Department of Physics, A. Nota (3, Astronomy, Baltimore, E. Sabbi (3, Italy, J. Gallagher (8), Johns Hopkins University, L. Angeretti (2), largo Pontecorvo 3, L.J. Smith (3, Lynn Redding Carlson (7), Madison, M. Cignoni (1, M. Meixner (3), M. Sirianni (3, M. Tosi (2), Osservatorio Astronomico di Bologna, P.G. Prada Moroni (5, Pisa, Research, Scientific Support Department, S. Degl'Innocenti (5, UK), Universita' degli Studi di Bologna, Universita' di Pisa, University College London, USA, WI

arxiv:0901.1237 v1 · 2009-01-09 · astro-ph.GA · 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{4H46QDJVDMETZ3R3R4U66UFAWA}

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	2026-05-18T04:32:53.588997Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

e1f9e80d351b093cee3b8f29ef50a0b02b5ee210c1c09eb68822a524424df237

Aliases

arxiv: 0901.1237 · arxiv_version: 0901.1237v1 · doi: 10.48550/arxiv.0901.1237 · pith_short_12: 4H46QDJVDMET · pith_short_16: 4H46QDJVDMETZ3R3 · pith_short_8: 4H46QDJV

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/4H46QDJVDMETZ3R3R4U66UFAWA \
  | 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: e1f9e80d351b093cee3b8f29ef50a0b02b5ee210c1c09eb68822a524424df237

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "ece28d33a80b831e4bd2e73932d4ca3025baed59e041dc1076c010643d717898",
    "cross_cats_sorted": [
      "astro-ph.SR"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2009-01-09T13:49:03Z",
    "title_canon_sha256": "9464c1a562464ac47359af765ec7bbe7446707a44563172d6fe5ec2add5ab915"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0901.1237",
    "kind": "arxiv",
    "version": 1
  }
}