Pith Number

pith:3MSAYRYT

pith:2009:3MSAYRYT3TD2LO5JHMEI5VLVWN

not attested not anchored not stored refs pending

A Spitzer Census of Star Formation Activity in the Pipe Nebula

August A. Muench, Charles J. Lada, Jan Forbrich, Jo\~ao Alves, Marco Lombardi

arxiv:0908.4086 v1 · 2009-08-27 · 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{3MSAYRYT3TD2LO5JHMEI5VLVWN}

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	2026-05-18T02:12:21.958355Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

db240c4713dcc7a5bba93b088ed575b3718c124a2fca0a352537b6cfba1fd008

Aliases

arxiv: 0908.4086 · arxiv_version: 0908.4086v1 · doi: 10.48550/arxiv.0908.4086 · pith_short_12: 3MSAYRYT3TD2 · pith_short_16: 3MSAYRYT3TD2LO5J · pith_short_8: 3MSAYRYT

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/3MSAYRYT3TD2LO5JHMEI5VLVWN \
  | 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: db240c4713dcc7a5bba93b088ed575b3718c124a2fca0a352537b6cfba1fd008

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "800fc5806a278ca98fb6266c34ec8c03fb75386754d48cab36c4dde1b4569e84",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.SR",
    "submitted_at": "2009-08-27T20:11:06Z",
    "title_canon_sha256": "14449c7e08645fe91b41d1065a4efb1b3a8fcfa7fd98eb0bb36a4daed69f43e0"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0908.4086",
    "kind": "arxiv",
    "version": 1
  }
}