Pith Number

pith:P3HGZYBF

pith:2009:P3HGZYBFLHS5YMDO2F5XTB2YGU

not attested not anchored not stored refs pending

Spitzer Observations of Cold Dust Galaxies

C. N. A. Willmer, C. W. Engelbracht, Delphine Marcillac, Emeric Le Floc'h, G. H. Rieke, J. L. Hinz, K. D. Gordon

arxiv:0904.4244 v2 · 2009-04-27 · astro-ph.CO

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{P3HGZYBFLHS5YMDO2F5XTB2YGU}

Prints a linked badge after your title and injects PDF metadata. Compiles on arXiv. Learn more

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	2026-05-18T02:13:56.926637Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

7ece6ce02559e5dc306ed17b79875835030ea20b27cbfc688684a8d4737e5954

Aliases

arxiv: 0904.4244 · arxiv_version: 0904.4244v2 · doi: 10.48550/arxiv.0904.4244 · pith_short_12: P3HGZYBFLHS5 · pith_short_16: P3HGZYBFLHS5YMDO · pith_short_8: P3HGZYBF

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/P3HGZYBFLHS5YMDO2F5XTB2YGU \
  | 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: 7ece6ce02559e5dc306ed17b79875835030ea20b27cbfc688684a8d4737e5954

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "a396115ed337fc052c6a746038431cc3d35592538e3c7543e1ae9b96904c26de",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2009-04-27T19:51:22Z",
    "title_canon_sha256": "ed7e3ef0da3ca9594e123fb40abae38c0dc585f00304e2072bb0cba44be91b20"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0904.4244",
    "kind": "arxiv",
    "version": 2
  }
}