Pith Number

pith:ZVV7VBK7

pith:2010:ZVV7VBK7QMN37YURAGNJMPVC53

not attested not anchored not stored refs pending

Zooming into the broad line region of the gravitationally lensed quasar Q2237+0305 = the Einstein Cross: III. Determination of the size and structure of the CIV and CIII] emitting regions using microlensing

2- EPFL Switzerland, 3- Uni. Li\`ege Belgium, 4- PUC Chile, 5), 5- MPIA Germany, 6- Uni. Washington), A. Eigenbrod (2), D. Hutsem\'ekers (3), D. Sluse (1), E. Agol (6), F. Courbin (2), G. Meylan (2), J. Wambsganss (1) (1- ARI/Zentrum fuer Astronomie University of Heidelberg Germany, R. Schmidt (1), T. Anguita (4

arxiv:1012.2871 v2 · 2010-12-13 · astro-ph.CO · astro-ph.GA · astro-ph.HE

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{ZVV7VBK7QMN37YURAGNJMPVC53}

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	2026-05-18T02:23:07.322928Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

cd6bfa855f831bbfe291019a963ea2eef724f0def83ba0eee4bf8bf3068595b3

Aliases

arxiv: 1012.2871 · arxiv_version: 1012.2871v2 · doi: 10.48550/arxiv.1012.2871 · pith_short_12: ZVV7VBK7QMN3 · pith_short_16: ZVV7VBK7QMN37YUR · pith_short_8: ZVV7VBK7

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/ZVV7VBK7QMN37YURAGNJMPVC53 \
  | 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: cd6bfa855f831bbfe291019a963ea2eef724f0def83ba0eee4bf8bf3068595b3

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "20ca6f58a76879365f46b8d0e226fd71ee8090f034efa2f90c793db5d69852a8",
    "cross_cats_sorted": [
      "astro-ph.GA",
      "astro-ph.HE"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2010-12-13T21:02:46Z",
    "title_canon_sha256": "67f6b3d12f325d9e0914f1bb140ed8843ed6add7de76d678f9874f67ebdaf8ba"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1012.2871",
    "kind": "arxiv",
    "version": 2
  }
}