Pith Number

pith:463YHWFF

pith:2009:463YHWFFTQVVZMJCDQ3XQHA3ES

not attested not anchored not stored refs pending

Detection of a Companion Lens Galaxy using the Mid-infrared Flux Ratios of the Gravitationally Lensed Quasar H1413+117

Chelsea L. MacLeod, Christopher S. Kochanek, Eric Agol

arxiv:0904.0275 v4 · 2009-04-02 · astro-ph.CO · astro-ph.GA

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{463YHWFFTQVVZMJCDQ3XQHA3ES}

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.

Cited by

1 paper in Pith

Probing Dark Matter Substructure with Image Number Anomaly in Strong Lensing Systems

Receipt and verification

First computed	2026-05-18T02:35:00.003911Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

e7b783d8a59c2b5cb1221c37781c1b24904cef3fefdd8468fc2d9cf67abab44f

Aliases

arxiv: 0904.0275 · arxiv_version: 0904.0275v4 · doi: 10.48550/arxiv.0904.0275 · pith_short_12: 463YHWFFTQVV · pith_short_16: 463YHWFFTQVVZMJC · pith_short_8: 463YHWFF

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/463YHWFFTQVVZMJCDQ3XQHA3ES \
  | 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: e7b783d8a59c2b5cb1221c37781c1b24904cef3fefdd8468fc2d9cf67abab44f

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "2347e098b4a30c22fb80a16c64879aa6d806d7ba06f26e44af201f6929b80ee7",
    "cross_cats_sorted": [
      "astro-ph.GA"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2009-04-02T18:57:18Z",
    "title_canon_sha256": "268eecbf6e4c0a17cbb2743712dcc929aeec4885e1542fee11b59c92f1770c96"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0904.0275",
    "kind": "arxiv",
    "version": 4
  }
}