Pith Number

pith:ENPKZ2BC

pith:2009:ENPKZ2BC2CR5FWFZ2RPWDE6NPX

not attested not anchored not stored refs pending

In Pursuit of the Least Luminous Galaxies

Beth Willman (Haverford College)

arxiv:0907.4758 v1 · 2009-07-28 · astro-ph.CO · astro-ph.GA

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{ENPKZ2BC2CR5FWFZ2RPWDE6NPX}

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	2026-05-18T02:12:47.367801Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

235eace822d0a3d2d8b9d45f6193cd7dde86e7f20b9f435cb8616e5923706873

Aliases

arxiv: 0907.4758 · arxiv_version: 0907.4758v1 · doi: 10.48550/arxiv.0907.4758 · pith_short_12: ENPKZ2BC2CR5 · pith_short_16: ENPKZ2BC2CR5FWFZ · pith_short_8: ENPKZ2BC

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/ENPKZ2BC2CR5FWFZ2RPWDE6NPX \
  | 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: 235eace822d0a3d2d8b9d45f6193cd7dde86e7f20b9f435cb8616e5923706873

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "cd43606cf332a077ebb8e769804efb712e549e014c4b9d0034d285bfa5de180c",
    "cross_cats_sorted": [
      "astro-ph.GA"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2009-07-28T17:47:39Z",
    "title_canon_sha256": "f94de2c8422e74a5a6f8b2514591a74df73bd28c8ec4312a28a8963973cbc173"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0907.4758",
    "kind": "arxiv",
    "version": 1
  }
}