Pith Number

pith:U6D5DMFN

pith:2006:U6D5DMFNFVSMMU6JUM5MMTFZ3Z

not attested not anchored not stored refs pending

The Spitzer c2d Survey of Nearby Dense Cores: II: Discovery of a Low Luminosity Object in the "Evolved Starless Core" L1521F

Antonio Crapsi (Leiden), Chadwick H. Young (Nicholls State), Chang Won Lee (KASI, Jens Kauffmann (MPIfR), Korea), Lucas Cieza (U. Texas), Michael M. Dunham (U. Texas), Neal J. Evans II (U. Texas), Nicholas Chapman (U. Maryland), Peter Teuben (U. Maryland), Philip C. Myers (CfA), Timothy Y. Brooke (Caltech), Tracy L. Huard (CfA), Tyler L. Bourke (CfA), Yancy L. Shirley (Steward Obs), Zahed Wahhaj (NAU)

arxiv:astro-ph/0608148 v1 · 2006-08-07 · astro-ph

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{U6D5DMFNFVSMMU6JUM5MMTFZ3Z}

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	2026-07-04T17:23:29.091487Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

a787d1b0ad2d64c653c9a33ac64cb9de4a76655bd80d5d6d7eea74067e5c1447

Aliases

arxiv: astro-ph/0608148 · arxiv_version: astro-ph/0608148v1 · doi: 10.48550/arxiv.astro-ph/0608148 · pith_short_12: U6D5DMFNFVSM · pith_short_16: U6D5DMFNFVSMMU6J · pith_short_8: U6D5DMFN

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/U6D5DMFNFVSMMU6JUM5MMTFZ3Z \
  | 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: a787d1b0ad2d64c653c9a33ac64cb9de4a76655bd80d5d6d7eea74067e5c1447

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "30745379580fbbb9a45328f564ad11e7fcc83f746eefa56c38868b9f7cac542d",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "2006-08-07T15:24:54Z",
    "title_canon_sha256": "0198758b60e7cfdb85f36dd69e5b33dd1fb880ad1e45c23d4209bd77f32aee8e"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/0608148",
    "kind": "arxiv",
    "version": 1
  }
}