Pith Number

pith:FRDOFYAV

pith:2005:FRDOFYAVBDKH2GEU55BJSJEPFC

not attested not anchored not stored refs pending

SDSSJ102111.02+491330.4: A Newly Discovered Gravitationally Lensed Quasar

Atsuko Nitta, Bart Pindor, Daniel J. Eisenstein, Dan Long, David E. Johnston, Donald G. York, Donald P. Schneider, Doug Miller, Edwin L. Turner, Eric H. Neilsen, Gordon T. Richards, Guido Brasi, Howard J. Brewington, J. Brinkmann, J. C. Barentine, Jr., Jurek Krzesinski, Masamune Oguri, Matthew A. Kenworthy, Michael D.Gregg, Michael Harvanek, Naohisa Inada, Patrick B. Hall, Peter R. Newman, Philip M. Hinz, Robert H. Becker, S. J. Kleinman, Stephanie A. Snedden

arxiv:astro-ph/0509296 v1 · 2005-09-12 · astro-ph

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{FRDOFYAVBDKH2GEU55BJSJEPFC}

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	2026-05-18T03:47:43.369854Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

2c46e2e01508d47d1894ef4299248f28962934c14292ec6aaa1a4c087e28845b

Aliases

arxiv: astro-ph/0509296 · arxiv_version: astro-ph/0509296v1 · doi: 10.48550/arxiv.astro-ph/0509296 · pith_short_12: FRDOFYAVBDKH · pith_short_16: FRDOFYAVBDKH2GEU · pith_short_8: FRDOFYAV

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/FRDOFYAVBDKH2GEU55BJSJEPFC \
  | 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: 2c46e2e01508d47d1894ef4299248f28962934c14292ec6aaa1a4c087e28845b

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "525ca1be4131d14618b77b55cd41031da2582c84e4d3dadfc3d256db4a5ef573",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "2005-09-12T16:39:37Z",
    "title_canon_sha256": "d0c1e40db25ac3ac32dbd7812645de99b8d7ecaaa7960071d13c6d90eb018d5a"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/0509296",
    "kind": "arxiv",
    "version": 1
  }
}